>From time to time I make a post reminding folks that there's a web site where
the content comes from a submarine radio operator (www.zerobeat.net/submarine) . I'd love to do a similar site with the memories and stories of folks who made their living pounding brass, whether aboard ship, at a Coast Station, Police Communications, Railroard or other venues. Yep...it appears that hardly anyone does any of the above now, and I'd like to preserve your memories on the web so that those of use that use and enjoy cw have a frame of reference other than amateur radio....when you're not around, you'll take those memories with you. If ya have a mind to, drop me an email....I'll be happy to turn it into HTML and devote as much space on the server as it takes to tell the story of the magical music. 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page, Free Classified Ads for amateur radio, QRP IRC channel Elecraft Owners Database www.tlchost.net/ Web Hosting as low as 3.49/month _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
I have no personal memories as I am a relatively recent amateur.
However, when I was growing up, one of our family friends was Thomas Roberts, a Captain for Pan American Airways. Tom got his start in the airline industry as a radio operator on the China Clippers. As I recall, and others will probably be able to verify some of this, the commercial news services used to transmit high speed code. I don't know what speed they used, but I recall that it was mechanically generated and very fast. He, and others of his generation, were able to copy the news broadcasts by ear. I can recall him pounding on a typewriter copying code and having the transmission stop well before he stopped typing. He never could type as fast as he could copy. As I can copy about 13-15 wpm under ideal conditions, I can only imagine what it must have been like copying code on the China Clippers with early radios and lots of electrical and mechanical noise from the plane, itself. Howard Ashcraft, W1WF -----Original Message----- From: Thom R. Lacosta [mailto:[hidden email]] Sent: Friday, December 10, 2004 3:52 PM To: [hidden email] Subject: [Elecraft] OT-Preserving CW memories >From time to time I make a post reminding folks that there's a web site >where the content comes from a submarine radio operator (www.zerobeat.net/submarine) . I'd love to do a similar site with the memories and stories of folks who made their living pounding brass, whether aboard ship, at a Coast Station, Police Communications, Railroard or other venues. Yep...it appears that hardly anyone does any of the above now, and I'd like to preserve your memories on the web so that those of use that use and enjoy cw have a frame of reference other than amateur radio....when you're not around, you'll take those memories with you. If ya have a mind to, drop me an email....I'll be happy to turn it into HTML and devote as much space on the server as it takes to tell the story of the magical music. 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page, Free Classified Ads for amateur radio, QRP IRC channel Elecraft Owners Database www.tlchost.net/ Web Hosting as low as 3.49/month _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Thom LaCosta
Howard wrote:
>... I can only imagine what it must have been like copying >code on the China Clippers with early radios... The long-route airline aircraft of the era often had a radio operator on board. He had to be licensed the same as a merchant marine radio officer, with at least a Second Class Radiotelegraph License (20 wpm plain language, 16 wpm code groups), PLUS he had to have the Aircraft Radiotelegraph Endorsement (25 wpm plain language, 20 wpm code groups) on his license. One of the continuing controversies about the last Amelia Earhart flight revolves around whether she, or Fred Noonan, had adequate knowledge about the radio gear they chose and carried. There have been some reports that Noonan held a commercial radiotelegraph license. The FCC was still carrying the Aircraft Radiotelegraph Endorsement in their system of commercial operator licenses and exams as late as about 25 years ago when I first got my second class telegraph license, though I'd guess the last commercial airline radiotelegraph operator positions had disappeared decades earlier. Up to the early 1960s, many airlines had their own staff of land-based HF radiotelegraph operators used to communicate scheduling and other info between operation centers for the airline. Though the individual operators may have had decades of experience and could often copy above 50 wpm, few ever advanced to the first class radiotelegraph operator license because the traffic that their station handled was not "public correspondence" as was required in the experience qualifications for the first class ticket. I never heard any machine-sent news/sports broadcasts on the maritime CW bands being sent at speeds higher than about 35 wpm. More critical safety-related broadcasts (weather, notice to mariners, etc.) were generally sent at about 25 wpm. The long-range military aircraft crews of WWII appear to have rarely conducted their Morse communications above about 12 wpm. In fact, many of the WWII-era aircraft radio sets could not be keyed any faster due to keying relay operation times. Many on this list will remember the WWII surplus "command sets" (ATA/ARA, SCR-274-N, AN/ARC-5) that got many hams on the air in the 20 years following WWII. In their original military installations, they could not be keyed faster than about 14 wpm. If you like Morse, it's hard not to like the old sets that were used when HF radio Morse was in it's commercial heyday. But for power-, weight-, and performance-critical portable operation today, I'll take a solid-state microprocessor-controlled rig anytime. 73, Mike / KK5F (Military Boatanchor Addict) _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Howard W. Ashcraft
I used to copy press off the air in the 50's. As the lone Flight Test ground
controller for Lockheed Aircraft Service, it helped fill in the time between condition checks with planes aloft and preparing meteorological reports. We used both HF AM and CW in those days. The "press" was sent from punched paper tape, I believe. It ran at a very steady 20 wpm. In my experience, "High speed" (>20 wpm) was ONLY used between a relatively few stations in which the same ops communicated with each other constantly. >From what I've read, some of those ops really "screamed", but they were the exception. They were usually government or military circuits and, before teletype become common after WWII, occasionally between shore stations moving traffic to where it could be passed onto the proper ship by a coastal station. On any "open circuit" intended for general consumption - like a press broadcast - 20 wpm or even less was run. After all, all ops had to copy without "fills" and the ops were only required to be able to copy 20 wpm. International stuff going from shore stations to ships at sea was often much slower - 15 wpm or less. Indeed, some commercial stations welded the weights on the operator's "bugs" in place to hold the speeds down at all times. They wanted absolutely consistent speed, no matter which operator might be on the shift, and chose a speed that they felt every operator on any ship or station could copy, no matter how "green". Radio station KPH on the US west coast (north of San Francisco) is regularly put on the air thanks to a dedicated group of hams/ex station operators. When the station is active, they often send a press tape that hams can copy on the short wave and medium frequency (600 meter) band. Check http://tinyurl.com/3fvgz for more information about them. They often put the old station on the air on New Year's eve. I don't know what this year's plans are. A really fun book documenting the adventures of "Sparks" - marine radio operators - is "Sparks What's Going On?" It's a 300 page compendium of anecdotes and reminiscences by radio operators who sailed the high seas in the heyday of CW communications. It's filled with personal notes and stories of humorous encounters such as the time the ship Queen Elizabeth passed Gibraltar one night. A Morse blinker on the rock flashed out, "What ship?" The QE replied, "What rock?" "Sparks What's Going On?" was published by Sylvester Focking, DH4PB. For more information see: http://tinyurl.com/4yewb Sylvester also published some CD's containing actual examples of CW on the High Seas between ships and ships and shore stations. It includes an actual SOS call that, to this day, still produces a chill when I hear it. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Thom LaCosta
Ron wrote:
>The "press" was sent from punched paper tape, I believe. It ran > at a very steady 20 wpm. Hi Ron, Coast Station WCC in the 1970s sent a nightly news/sports/financial broadcast in the 1970s at somewhere around 30 wpm. It was great practice, and interesting too. Coast station NAM during the same era was sending weather and NAVAREA/HYDROLANT broadcasts, intended primarily for Naval Sealift Command civilian-manned vessels, at a consistent 25 wpm that was very easy to copy due to the perfect machine-sent nature of the keying. I have to figure that, even though the second class telegraph license didn't require speed greater than 20 wpm, most candidates copied well above that before setting for the exam. I found the random code group exam at a paltry 16 wpm to be far more difficult to pass, since at least 80 consecutive random characters had to be copied without error during the five minute run. Five errors spaced just right would send you down. >A really fun book documenting the adventures of "Sparks" - marine >radio operators - is "Sparks What's Going On" Sounds like a great book. I'll have to track that one down. It's so aggravating dealing with the foreign currency issue, though. The RSGB a few years ago was selling a memoir of a British radio officer of the 1970s and 80s. I don't remember the title, but it was well worth reading as a description of the late soon-to-be-gone era of commercial Morse. In the very early 1990s, a lot of commercial telegraph license holders were sent a solicitation from one of the radio officer unions looking for candidates to filll open billets. I guess there hadn't been too many new recruits to an obviously dead-end career! >Sylvester also published some CD's containing actual examples >of CW on the High Seas between ships and ships and shore >stations. It includes an actual SOS call that, to this day, still >produces a chill when I hear it. That would be very interesting! I've talked to merchant radio officers who completed lengthy careers without ever hearing a real SOS. Was it sent ...---... or ... --- ... ? It's surprising how many have the misconception that it's sent with a space between the S, O, and S, rather than the proper method of sending it all as *one* character. In fact, even the USAF's automatic emergency code keyers (AN/ARA-26) that were attached to most USAF airborne HF sets in the 1950s and 1960s were designed to send SOS incorrectly as three separate characters! 73, Mike / KK5F _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Mike wrote:
"I've talked to merchant radio officers who completed lengthy careers without ever hearing a real SOS. Was it sent ...---... or ... --- ... ?" ----------------------------------- SOS was a prosign, as you point out, sent correctly as one character: ...---... But any error is possible and at times probable. The world of civilian ops from all countries on the marine band was quite different from the military channels! Focking's CDs of marine band activity is a good reminder about how (not so) fast many marine stations were and how rough *some* of those fists were - even some shore ops! To me, the Ham bands today filled with keyer-generated CW sound very little like the old marine frequencies where half or more of the fists were on straight keys. I bet a LOT of those ops would have loved to have a K2 for the keyer and, at times the filters. The 500 calling frequency was often a cacophony of signals all on top of one another in the passband of receivers of the day. To this day I still prefer a wide filter, even with moderate QRM. With my K2 on CW, I use the SSB filter more than any other. I love being able to keep track of what's going on around the frequency I'm using. The trick of course, is to turn off the AGC so stronger signals in the passband won't depress the receiver gain. One of these days I'll add a hard limiter to protect my ears. The dynamic range of the K2 allows really huge peaks to come through without the AGC. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Ron,
In 1946, the only way I could get from South Africa to Mauritius as a 16 year old was to sign on as "Spark's Helper" - at least I had passed the ZS ham tests! The main Tx was a single tube 1.5kW oscillator on 500kHz and the other two frequencies. The standby was a rotary quenched spark which did not need any bandswitch - it was probably DC to Light. Not sure whether it used RF or sound for communicating. Sparks used to wind it up for testing, he said, in the middle of the night, methinks really to wake up the ten elderly female passengers on board. Cannot imagine K2's keyer running that thing!! 73, Geoff GM4ESD ----- Original Message ----- From: "Ron D'Eau Claire" <[hidden email]> To: <[hidden email]> Sent: Saturday, December 11, 2004 9:08 PM Subject: RE: [Elecraft] OT-Preserving CW memories I bet a LOT of those ops would have loved to have a K2 for the keyer and, at times the filters. The 500 calling frequency was often a cacophony of signals all on top of one another in the passband of receivers of the day. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Ron D'Eau Claire-2
Ron and all,
Are you aware that reducing the RF gain will reduce the AGC action as well. Folks who want to try it may be surprised how well copy can be made under QRM conditions with the AF gain at full and the overall gain controlled by the RF gain. With this technique, the residual AGC provides some 'limiting' protection for the ears while allowing one to dig for really weak signals - this is applicable at any bandwidth, but more so for wider ones. 73, Don W3FPR ----- Original Message ----- To this day I still prefer a wide filter, even with moderate QRM. With my K2 on CW, I use the SSB filter more than any other. I love being able to keep track of what's going on around the frequency I'm using. The trick of course, is to turn off the AGC so stronger signals in the passband won't depress the receiver gain. One of these days I'll add a hard limiter to protect my ears. The dynamic range of the K2 allows really huge peaks to come through without the AGC. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Don W3FPR wrote:
Are you aware that reducing the RF gain will reduce the AGC action as well. Folks who want to try it may be surprised how well copy can be made under QRM conditions with the AF gain at full and the overall gain controlled by the RF gain. With this technique, the residual AGC provides some 'limiting' protection for the ears while allowing one to dig for really weak signals - this is applicable at any bandwidth, but more so for wider ones. ------------------------------------------------------------ Good point, Don. Yes, that's what I do with the K2 quite a bit. It's worked well enough that I've put off fixing up a limiter. The problem comes up when I need to run the gains up for a very weak station and suddenly a huge signal in the passband keys the rig. The AGC kicks in and the weak signal disappears! Saves my ears, more or less, but kills the copy. With a hard limiter, if I've got the weak signal up right where the limiter is starting to clip, a much stronger signal is no louder. It's just rougher sounding thanks to the higher degree of clipping it gets. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Don Wilhelm-3
Well, YMMV ... but I'm sort of with Ron. I like to know what's going on
around me, and if I want to really dig in and pull someone out of the noise, I know I can do it (well, sometimes!). I retired from communications engineering, and I accept all the theory for channels subjected to noise and possible throughput as a result, but we're not "Point-To-Point" folks. I'm not totally sure that it applies to the operation of a ham radio station. Fred K6DGW Auburn CA CM98lw W3FPR - Don Wilhelm wrote: > > Ron and all, > > Are you aware that reducing the RF gain will reduce the AGC action as well. > Folks who want to try it may be surprised how well copy can be made under > QRM conditions with the AF gain at full and the overall gain controlled by > the RF gain. > > With this technique, the residual AGC provides some 'limiting' protection > for the ears while allowing one to dig for really weak signals - this is > applicable at any bandwidth, but more so for wider ones. > > 73, > Don W3FPR > > ----- Original Message ----- > > To this day I still prefer a wide filter, even with moderate QRM. With my K2 > on CW, I use the SSB filter more than any other. I love being able to keep > track of what's going on around the frequency I'm using. The trick of > course, is to turn off the AGC so stronger signals in the passband won't > depress the receiver gain. One of these days I'll add a hard limiter to > protect my ears. The dynamic range of the K2 allows really huge peaks to > come through without the AGC. > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Don Wilhelm-3
Earlier in this thread I mentioned that the old RCA coastal marine station
at Point Reyes, CA still gets on the air from time to time courtesy of a lot of hard work by ex ops who are also Hams. They have announced that they will be on New Year's Eve to help celebrate SKN on the Ham bands as well as on the 600 meter Marine band. The Amateur call sign is K6KPH and the marine call sign is KPH. K6KPH will begin operation at 1600 PST/0000 GMT. They expect to operate for about six hours, or until 2200 PST/0600 GMT. Frequencies - K6KPH will be on 3545kc, 7050kc, 14050kc and 21050kc if the band is open. There is a slight possibility that a transmitter will be activated on 18097.5kc. Operators will advise if that frequency is being monitored. Multiple operators will be on duty at the operating positions, some of whom are likely to be ex-KPH ops. The transmitters for 3.5Mc, 7Mc and 14Mc will be 1950s vintage RCA sets. The transmitters for 21Mc, and 18Mc, if activated, will be a Henry commercial sets. The transmitters for 3.5Mc, 7Mc and 14Mc will be 1950s vintage RCA sets. The transmitters for 21Mc, and 18Mc, if activated, will be a Henry commercial sets. KPH will be on the air with continuous transmissions on MF beginning at 1700 PST/0100 GMT. Frequencies - Announcements will be made on 500kc. Press, weather, and other information will be sent on 426kc. 500kc will be monitored for calls from ships at sea. The silent period on 500kc will of course be observed. Equipment - The transmitter will be a Henry commercial set. Power will be about 5kW. Antenna - The MF transmitting antenna will be a Marconi T. Signal Reports & QSLs - Signal reports and QSLs may be sent to: Ms. Denice Stoops P.O. Box 381 Bolinas CA 94924-0381 USA ---- AR ----- Denice was the first woman operator at KPH. In the past, at least, they QSL 600 meter reception reports and contacts on the ham bands with genuine RCA message forms (there were bunch over when commercial operations shut down) filled out on a vintage mill (all caps CW typewriter). Work 'em with your Elecraft rigs and marry history with the future <G>. It's a fun way to spend some time New Year's eve. Don't be surprised not to get a RST report. If you snag an old commercial op, they'll report your signal strength using the system commercial stations have used for many decades: QSA 1 through QSA 5. 1 = barely in there, 5 = "armchair" copy. Answer the report in kind an give an OT at the KPH key a nice feeling of being back "home" again... Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Ron wrote:
>KPH will be on the air with continuous transmissions on MF >beginning at 1700 PST/0100 GMT. > >Frequencies - Announcements will be made on 500kc. Press, >weather, and other information will be sent on 426kc. 500kc >will be monitored for calls from ships at sea. The silent period >on 500kc will of course be observed. It's hard to believe that it's only been five years since all this went extinct. Even as recently as 15 years ago there was substantial maritime Morse activity. I used to keep a Kenwood R-600 on 500 kHz at my bedside at night. I miss hearing the Winter night-time MF Morse activity that here in the eastern U.S. could come from anywhere between the Great Lakes to the Carribean. Often the signals were A2/MCW, not A1/CW. Unfortunately, it's unlikely we'll be able to hear KPH in Alabama, but I'll try. 73, Mike / KK5F _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Mike, KK5F wrote:
It's hard to believe that it's only been five years since all this went extinct. Even as recently as 15 years ago there was substantial maritime Morse activity. I used to keep a Kenwood R-600 on 500 kHz at my bedside at night. I miss hearing the Winter night-time MF Morse activity that here in the eastern U.S. could come from anywhere between the Great Lakes to the Carribean. Often the signals were A2/MCW, not A1/CW. ------------- Astonishing that only a decade ago I was lured from my word processor to dust off my Radiotelegraph license to start climbing masts and repairing vacuum tube CW transmitters, radio direction finders, old radar sets, etc., on the merchant ships we pulled from the mothball fleet war for Gulf war I. Over the previous three decades America had given up almost all of its merchant marine in favor of cheaper foreign lines, so they were pulling every old hull that could still move under its own power out of mothballs to haul supplies to the Persian Gulf. My main task was to tease 1950's and 60's vintage electronics back to life for a few more trips across the Pacific. Having no American merchant marine meant no trained crews and officers. On a whim I had answered an query from Mackay Radio looking for help. They were chasing down every licensed commercial operator who could stand upright. When I wandered into the shop, the grizzled old manager looked at me, pointed to a box on the bench and asked me what it was. I looked closely... frequency dial, audio gain, bandswitch, regenerat... "What?" I asked. "Are they still using regenerative receivers?" "Your hired!" he bellowed. "You're the first guy who's been here who knew what it was!" And so began a really fun re-acquaintance with the "roots" of radio communications that lasted for several years in the 90's. Memories of dragging myself and a load of tools and test equipment ashore off of the launch at 1 a.m. Christmas morning after an 18 hour shift rebuilding a old radar are balanced by the bright, sunny morning I stood on the bridge wing of the 1,200 foot long Naval Hospital Shop USNS Mercy as she glided under the Bay Bridge on our way to sea trials. I needed to calibrate her radio direction finder. The captain came up to me and handed me a steaming cup of coffee in a Navy mug. When we returned to port and I packed my things, I was about the leave when the Captain said, "Hey Ron! You forgot this" and handed me the mug. I'm having a cup of coffee from it as I write this. Seeing how CW quickly died only a few years later, I was profoundly glad to have been able to come back to the party for a just a little while before they turned out the lights for the last time. The sage who observed that we only live once and counseled embracing each opportunity as it comes was telling the truth... Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
On Sat, 11 Dec 2004, Ron D'Eau Claire wrote:
> > Seeing how CW quickly died only a few years later, I was profoundly glad to > have been able to come back to the party for a just a little while before > they turned out the lights for the last time. > > The sage who observed that we only live once and counseled embracing each > opportunity as it comes was telling the truth... > And that's why I'm asking that you folks who earned a living, whether in private or government service, by making the morse music submit some of your memories.....cause when you're gone, it ain't like we can go up in the attic, rummage around and find them. 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page, Free Classified Ads for amateur radio, QRP IRC channel Elecraft Owners Database www.tlchost.net/ Web Hosting as low as 3.49/month _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Don Wilhelm-3
I was at VO2AAA in Labrador City for CQ WW CW with K2/100 #850 and an
AL-1200. We were next to a residential area with a very high line noise and precipitation static. On 80 and 160 meters with the AF gain about 3/4 way up and riding the RF gain and DSP with noise reduction made some of the second & third tier stations copyable. Sometimes you have to be really fast on reducing the RF gain to save your ears! I don't really like the "sound" that I get out of my K2 with the DSP, but when you are digging stations out of the noise the NR and the DSP filter #1 really helped. The K2 as the run station was good for about 3000 Q's, the mult station for a couple hundred. And 3.4M points. Think I remember working a couple calls from this list! 73 Hank K8DD At 12/11/2004 07:45 PM, W3FPR - Don Wilhelm wrote: >Ron and all, > >Are you aware that reducing the RF gain will reduce the AGC action as >well. Folks who want to try it may be surprised how well copy can be made >under QRM conditions with the AF gain at full and the overall gain >controlled by the RF gain. > >With this technique, the residual AGC provides some 'limiting' protection >for the ears while allowing one to dig for really weak signals - this is >applicable at any bandwidth, but more so for wider ones. > >73, >Don W3FPR > >----- Original Message ----- >To this day I still prefer a wide filter, even with moderate QRM. With my K2 >on CW, I use the SSB filter more than any other. I love being able to keep >track of what's going on around the frequency I'm using. The trick of >course, is to turn off the AGC so stronger signals in the passband won't >depress the receiver gain. One of these days I'll add a hard limiter to >protect my ears. The dynamic range of the K2 allows really huge peaks to >come through without the AGC. > > > >_______________________________________________ >Elecraft mailing list >Post to: [hidden email] >You must be a subscriber to post to the list. >Subscriber Info (Addr. Change, sub, unsub etc.): >http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/subscribers.htm >Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Mike Morrow-3
From: "Mike Morrow" <[hidden email]> Date: Sat, 11 Dec 2004 12:25:51 -0600 Howard wrote: >... I can only imagine what it must have been like copying >code on the China Clippers with early radios... The long-route airline aircraft of the era often had a radio operator on board. He had to be licensed the same as a merchant marine radio officer, with at least a Second Class Radiotelegraph License (20 wpm plain language, 16 wpm code groups), PLUS he had to have the Aircraft Radiotelegraph Endorsement (25 wpm plain language, 20 wpm code groups) on his license. If you're interested in fiction about some of this, I highly recommend _The Lost Flying Boat_ by Alan Sillitoe. This is fiction, but as a former radio operator himself, and a fine writer, he communicates the magic of Morse very nicely. After he became a successful writer, he bought a shortwave receiver so he could just listen in becuase he enjoyed it so much. 73, doug _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Doug wrote:
If you're interested in fiction about some of this, I highly recommend _The Lost Flying Boat_ by Alan Sillitoe. This is fiction, but as a former radio operator himself, and a fine writer, he communicates the magic of Morse very nicely. ------------ Thanks! I've not read that one. A great novel about the early days of maritime shore station operations is "The Nymph and the Lamp" by Thomas H. Raddall. It was published in 1950 by Little, Brown and Company, Boston, USA. It's still available through used book dealers on the internet. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Hello All,
The most incredible aviation story of all, is the round-the-world-flight of the Pacific Clipper at the start of WWII. It is the subject of two books, the first written by Pan Am Radio Officer Ed Dover: 73, Bruce WA8TNC *********************************************************** "The Long Way Home: Captain Ford's Epic Journey" - Ed Dover Following the Japanese attack on Pearl Harbor on 7 December, 1941, a giant four-engined Pan American Airways Boeing flying boat, registered as NC18602, under the command of Captain Robert Ford, embarked on a remarkable journey. In one sense, it was the earthly 1940s equivalent of the first Apollo lunar missions in that it ventured into unknown territory and returned home safely in the face of overwhelming odds. Caught en route over the South Pacific at the time of the Japanese attack, Captain Ford and his crew were forced into a flight plan that none of them had anticipated when they left San Francisco on 1st December for what was to have been a routine round trip commercial flight to Auckland, New Zealand. Faced with the threat of interception by Japanese forces, they were ordered to take their strategically valuable aircraft on a globe-girdling, 31,500 mile, six-week odyssey, heading westward mostly across territory that had never been flown over before by such a large commercial aircraft. With no suitable navigation charts, no certainty of obtaining fuel or servicing, and under a total veil of secrecy and radio blackout, they threaded their way across the war zones of the Far East, the Middle East, Africa, the South Atlantic, Brazil, and the Caribbean, to bring their aircraft home safely to New York. This is the story of that historic flight as related to me in person by Captain Robert Ford. **************************************************** "Escape of the Pacific Clipper" by George L. Flynn The Escape of Pan Am's Pacific Clipper on its maiden voyage is a true story of adventure and suspense. In 1941, the Pacific Clipper was a technological marvel and the finest commercial plane in the air. Not only did Japan and Germany seek the capture of such desirable prize, but our Allies and friends looked for ways of laying claim to her. Trapped in New Zealand after the bombing of Pearl Harbor, with all their Pacific bases under attack or captured, the valiant crew of eleven men challenged the Imperial Japanese navy, 30,000 miles of uncharted waters, and the German Luftwaffe to try for a safe landing in America. With courage and skill, the crew of the Pacific Clipper eluded the pursuing Japanese through Australia, Indonesia, Ceylon, and India. In Iran, the Germans took up the chase through Egypt, the Congo, and Brazil. After a final stop at Trinidad, the heroic crew brought the Clipper home to New York and the final showdown. Lead by Captain Robert Ford, the Pacific Clipper and its crew flew across continents landing on lakes and rivers that had never seen a flying boat. Without arms, money or proper maintenance facilities, and under strict radio silence, they succeeded where most would have given up or failed. Their gripping tale and magnificent odyssey is captured by George Flynn and illustrated with maps, schematics, and technical data on the revolutionary monowing seaplane. ======================= > Doug wrote: > > If you're interested in fiction about some of this, I highly recommend _The > Lost Flying Boat_ by Alan Sillitoe. This is fiction, but as a former radio > operator himself, and a fine writer, he communicates the magic of Morse very > nicely. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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