VLF/LF Converters
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Interesting Ron.....and,as a matter of interest, on the 'Night of
Nights', I've copied KPH, on 426kHz, here in the far north of NZ's North Island, for several years now. 73 de Mike, zl1mh. No virus found in this outgoing message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.6.10/1638 - Release Date: 8/27/2008 7:06 PM _______________________________________________ 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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Regarding the VLF converters, one question I have for the SW folks at
Elecraft is whether they could add a transverter "band" to support these unique receive converter IF frequencies. For example, I have a VLF converter that I've used for years that was designed for a 4 MHz IF. I realize that I can simply tune 4 to 4.5 MHz and mentally ignore the 4 MHz portion of the display, but it would be ideal if I could define a new "transverter" band where 4 to 4.5 MHz is displayed on the front panel as 0-500 kHz. Scott N7NB -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Mike Sent: Thursday, August 28, 2008 10:58 AM To: [hidden email] Subject: [Elecraft] VLF/LF Converters Interesting Ron.....and,as a matter of interest, on the 'Night of Nights', I've copied KPH, on 426kHz, here in the far north of NZ's North Island, for several years now. 73 de Mike, zl1mh. No virus found in this outgoing message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.6.10/1638 - Release Date: 8/27/2008 7:06 PM _______________________________________________ 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 |
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In reply to this post by Mike-531
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I have worked the ham station call for the past two years during the "Night
of Nights" and also monitored KPH on all marine frequencies except the 600 meter frequencies. I simply don't have an antenna for anything that low. After the second year I sent a QSL and, as you mentioned, I received a nice QSL on an RCA message form from Ms. Stoops. The volunteers there are doing a wonderful job in preserving an important part of radio history by restoring the old equipment and keeping the station available for tours, etc. I also understand they secured a new coastal station license for KSM which uses the same equipment as KPH and can accept commercial traffic when it is in operation. Monitoring KPH, KFS and WCC helped me with learning Morse back in the days when I was thinking of getting a ham license. I understand WCC was dismantled except for the receive building which they are trying to preserve as a museum but the transmitter location was dismantled and the receive location has no equipment. Fortunately, KPH has not suffered that fate. I wish I lived close enough to the station to visit during the next Night of Nights. Bruce - W8FU -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Ron D'Eau Claire Sent: Thursday, August 28, 2008 3:52 PM To: [hidden email] Subject: RE: [Elecraft] VLF/LF Converters Wow, Mike! Have you told them? They'd like to know and you'll get a nice 'QSL' from the Grand Dame of KPH, Denise Stoops (the first female operator there). She sends "QSLs" out on original RCA radiogram forms as long as the supply left over from full time station ops lasts in response to an SASE. They put in a nice signal here, but I'm only 600 miles away. On the other hand, I'm close enough that I've managed to be at the station for one of their "night of nights" activities. That's a special bit of nostalgia for me since I used to chat with them on the air from ships visiting San Francisco Bay while testing the shipboard CW gear. For those here on the reflector without MF capability, KPH also transmits CW and RTTY on various HF frequencies and is active as K6KPH on several Ham bands, usually on 7050, 14050 and 21050 kHz and occasionally on 3550 kHz. There's more info about the facilities, stations in operation and frequencies used on: http://www.radiomarine.org Ron AC7AC -----Original Message----- Interesting Ron.....and,as a matter of interest, on the 'Night of Nights', I've copied KPH, on 426kHz, here in the far north of NZ's North Island, for several years now. 73 de Mike, zl1mh. _______________________________________________ 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 Internal Virus Database is out of date. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.6.7/1629 - Release Date: 8/23/2008 1:16 PM _______________________________________________ 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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In reply to this post by Scott Prather-2
Scott,
Right now, the K3 XVx RF can be set to most any frequency (MHz increment) from 0 to 999 - but unfortunately the IF frequency is currently limited to 7, 14, 21, 28, and 50 MHz. If we could convince Wayne and Eric to support the 10 MHz band as an IF, that would work for the 10 MHz IF used in the Jackson Harbor Press kit that has received some recent 'press' here. I suppose a 4 MHz If might be possible too - but that may depend on how many users there may be. What is the chance that you could change the mixer crystal to give your VLF converter a 7 MHz IF? If it has tuned circuits at the output, those would have to be changed to the new IF as well, but it certainly should not be a daunting task, perhaps just a few toroids to wind. I don't know how well any of this works because I have not tried it, but it seems feasible looking at the K3 transverter interface menus. 73, Don W3FPR Scott Prather wrote: > Regarding the VLF converters, one question I have for the SW folks at > Elecraft is whether they could add a transverter "band" to support these > unique receive converter IF frequencies. For example, I have a VLF converter > that I've used for years that was designed for a 4 MHz IF. > > I realize that I can simply tune 4 to 4.5 MHz and mentally ignore the 4 MHz > portion of the display, but it would be ideal if I could define a new > "transverter" band where 4 to 4.5 MHz is displayed on the front panel as > 0-500 kHz. > > Scott > N7NB > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Mike > Sent: Thursday, August 28, 2008 10:58 AM > To: [hidden email] > Subject: [Elecraft] VLF/LF Converters > > Interesting Ron.....and,as a matter of interest, on the 'Night of > Nights', I've copied KPH, on 426kHz, here in the far north of NZ's North > Island, for several years now. > 73 de Mike, zl1mh. > > No virus found in this outgoing message. > Checked by AVG - http://www.avg.com > Version: 8.0.138 / Virus Database: 270.6.10/1638 - Release Date: 8/27/2008 > 7:06 PM > > _______________________________________________ > 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 > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.138 / Virus Database: 270.6.11/1639 - Release Date: 8/28/2008 7:39 AM > > > 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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Don: It's certainly possible to change my VLF converter such that a 7 MHz IF
is used instead, but I brought this up primarily because the addition of these virtual bands shouldn't be a tremendous effort in SW. But, of course, such things are always simple for the person who doesn't have to actually do the work. And the inclusion of such a band could open up the floodgates for special band requests. To standardize things a bit, I recommend that Elecraft consider adding the 10 MHz band as an IF in the transverter menu. I can easily move my VLF converter to a 10 MHz IF and the LO can be supplied by my local H/P frequency standard. Scott N7NB -----Original Message----- From: Don Wilhelm [mailto:[hidden email]] Sent: Thursday, August 28, 2008 1:46 PM To: Scott Prather Cc: [hidden email] Subject: Re: [Elecraft] VLF/LF Converters Scott, Right now, the K3 XVx RF can be set to most any frequency (MHz increment) from 0 to 999 - but unfortunately the IF frequency is currently limited to 7, 14, 21, 28, and 50 MHz. If we could convince Wayne and Eric to support the 10 MHz band as an IF, that would work for the 10 MHz IF used in the Jackson Harbor Press kit that has received some recent 'press' here. I suppose a 4 MHz If might be possible too - but that may depend on how many users there may be. What is the chance that you could change the mixer crystal to give your VLF converter a 7 MHz IF? If it has tuned circuits at the output, those would have to be changed to the new IF as well, but it certainly should not be a daunting task, perhaps just a few toroids to wind. I don't know how well any of this works because I have not tried it, but it seems feasible looking at the K3 transverter interface menus. 73, Don W3FPR Scott Prather wrote: > Regarding the VLF converters, one question I have for the SW folks at > Elecraft is whether they could add a transverter "band" to support these > unique receive converter IF frequencies. For example, I have a VLF converter > that I've used for years that was designed for a 4 MHz IF. > > I realize that I can simply tune 4 to 4.5 MHz and mentally ignore the 4 MHz > portion of the display, but it would be ideal if I could define a new > "transverter" band where 4 to 4.5 MHz is displayed on the front panel as > 0-500 kHz. > > Scott > N7NB > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Mike > Sent: Thursday, August 28, 2008 10:58 AM > To: [hidden email] > Subject: [Elecraft] VLF/LF Converters > > Interesting Ron.....and,as a matter of interest, on the 'Night of > Nights', I've copied KPH, on 426kHz, here in the far north of NZ's North > Island, for several years now. > 73 de Mike, zl1mh. > > No virus found in this outgoing message. > Checked by AVG - http://www.avg.com > Version: 8.0.138 / Virus Database: 270.6.10/1638 - Release Date: 8/27/2008 > 7:06 PM > > _______________________________________________ > 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 > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.138 / Virus Database: 270.6.11/1639 - Release Date: 8/28/2008 > > > _______________________________________________ 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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