[K1-2277} Front Panel construction--push-button switch installation

classic Classic list List threaded Threaded
19 messages Options
Reply | Threaded
Open this post in threaded view
|

[K1-2277} Front Panel construction--push-button switch installation

Richard-3
Hello all.  First time build of a K1 and I could use some advice on
installing the switches.  The pins I have sit a bit narrower than the pin
holes on the circuit board.  Slight pressure separates them sufficiently to
fit the holes, but they do not want to extend through the holes, they extend
just far enough to fill the hole but not quite far enough to break through
the plane of the board on the side opposite the switch.  "Switch pins are
fragile" keeps me from applying too much force worrying about bending the
pins, and I did manage to create a 90 degree bend in one.

Am I missing a trick?

NU6T
Rich



_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: [K1-2277} Front Panel construction--push-button switch installation

Don Wilhelm-3
Rich,

The pins are not all that fragile - once they are started into the holes
properly, you can apply a bit of pressure (just don't 'beef them down').

The pins do not extend much beyond the board surface, and in some cases
will be about flush.  Be certain you heat the switch pin when soldering
and not just the solder pad - if you have any doubts about a goo
connection, you can solder them from the top (being careful to keep the
iron away from plastic parts).

73,
Don w3FPR

Richard Hill wrote:
> Hello all.  First time build of a K1 and I could use some advice on
> installing the switches.  The pins I have sit a bit narrower than the pin
> holes on the circuit board.  Slight pressure separates them sufficiently to
> fit the holes, but they do not want to extend through the holes, they extend
> just far enough to fill the hole but not quite far enough to break through
> the plane of the board on the side opposite the switch.  "Switch pins are
> fragile" keeps me from applying too much force worrying about bending the
> pins, and I did manage to create a 90 degree bend in one.
>
_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

REAL CW!!

Ron D'Eau Claire-2
Much has been written on this reflector about the sound of the sidetone,
particularly the K2's sidetone, and about stability and narrow band
clickless keying, stable signals, with today's operators asking for
razor-sharp selectivity in order to copy signals in a crowded band.

Here are some recordings of actual COMMERCIAL CW maritime signals on the 600
meter (500 KHz) band from the 1970's in European waters

http://www.n1ea.coastalradio.org.uk/W1DM_500_EU_74.zip

How many stations can you copy at once? And how about that keying by real
fists on mechanical keys! As for the stability and clicks, some sound like
bullfrogs with a belching problem, others redefine "yoop" and still others
sound a cat having its tail pulled. I rather like the one that sounds like a
canary with laryngitis; My one-tube 6V6 rig sounded much like that. At about
that time our Ham bands didn't sound much different! And, no, most of them
didn't have lousy power supplies with too much ripple: many ops ran MCW. All
maritime consoles were capable of modulating the carrier with a tone if
desired. It was required when sending distress signals.

If those sounds don't grate on your ears, try some real spark transmissions
in the next link below. These were probably recreations produced by the
antique wireless assn using real spark transmitters (in suitably shielded
rooms). No wonder us O.T.s think the K2's sidetone sounds sweet and smooth!

http://www.n1ea.coastalradio.org.uk/NBD%20spoof.zip

And there's more to hear at:

http://www.n1ea.coastalradio.org.uk/

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

Reply | Threaded
Open this post in threaded view
|

Re: REAL CW!!

k6dgw
Ron D'Eau Claire wrote:
> Much has been written on this reflector about the sound of the sidetone,
> particularly the K2's sidetone, and about stability and narrow band
> clickless keying, stable signals, with today's operators asking for
> razor-sharp selectivity in order to copy signals in a crowded band.
>
> Here are some recordings of actual COMMERCIAL CW maritime signals on the 600
> meter (500 KHz) band from the 1970's in European waters

Cool Ron!  The calls were different when I was a 16yr old in coastal
marine [West coast of NA], but that *is* what 600m sounded like on the
nighttime shifts.  I'm so used to our current near-perfect spacing from
keyers and computer-sent CW, I have to really concentrate to copy from
that what I used to so easily.  OK...I was younger then.  A lot of
fists-afloat were pretty bad.  Mine on-shore was perfect, of course.  I
don't remember spark thank God, I'd be much older now if I did and
likely dead.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org
_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

RE: REAL CW!!

Mike Short
 So why did they all sound so different? Was is operator preference or
equipment limitations that determined the tone?

Mike
AI4NS
(Just a young pup. Only 8 years of ham radio with 25 years in between
licenses...)

_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: REAL CW!!

N2EY
In reply to this post by Ron D'Eau Claire-2
In a message dated 5/29/07 10:32:56 PM Eastern Daylight Time,
[hidden email] writes:


> So why did they all sound so different? Was is operator preference or
> equipment limitations that determined the tone?
>

Whole bunch of reasons.

For one thing, a marine radio's first priority is reliability. Lives may
depend on whether or not the radio works - not just the lives of those on that
particular ship, either. And unlike aircraft or landbased radio, repairs are
limited to what you have on the ship. So the radio gear is way overbuilt by
landlubber standards, and signal quality isn't the first concern.

Another factor is that while the radio is a vital piece of equipment, ship
owners aren't eager to replace and upgrade them too often. Part of the reason is
the cost of new radio gear itself, but a bigger cost is that the ship isn't
making money sitting tied to the dock getting a new radio set installed,
checked out and approved. So they tended to use the same old radio sets as long as
possible, meaning that rigs of many different vintages were on the air at the
same time.

Still another factor is that for many sets the signal quality was influenced
by how the rig was tuned up. If you've got a ton of traffic to pass and the
weather is getting bad, you may not spend a lot of time tuning the rig for an
absolutely perfect T9X signal when T8C will get the message through just as
well.

That's just what I've been told by the old salts who actually did it.

73 de Jim, N2EY


**************************************
 See what's free at
http://www.aol.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

Reply | Threaded
Open this post in threaded view
|

Re: REAL CW!!

k6dgw
In reply to this post by Mike Short
Mike Short wrote:
>  So why did they all sound so different? Was is operator preference or
> equipment limitations that determined the tone?
>
> Mike
> AI4NS
> (Just a young pup. Only 8 years of ham radio with 25 years in between
> licenses...)

Hi there Young Pup,

Equipment was different then, and really so aboard ship.  Chirp and
rough AC notes were common when I worked coastal marine in 57 [HS
senior].  Shipboard power was often not the most stable you'd likely
find today, radios tended to be old ... the recording was from the 70's,
some of that equipment may have been pre-WW2 ... and operating condx
weren't always all that great.  The maritime service tended to sail
their fleets until they rusted to the bottom.

I had a hard time copying some of that and 50 years ago as a 16yr old,
it would have been a slam dunk.  We're used to incredibly stable
receivers and transmitters, pure notes, perfect spacing of CW
[well...maybe not on SKN :-) ].  Most then used bugs, but there were a
number of straight keys as well, you can spot them in the audio clip.

Many of the bugs were hard to slow down.  Vibroplex's were notorious.
Being a teen and very poor, my bug was a J-36 I'd found at Sam's Surplus
Sales on Pico St in downtown Los Angeles.  It was sort of
proletarian-looking [OK, very proletarian], not shiny like those of my
crew mates, but it could produce civilized dot speeds without added and
ugly weights.

The recording at Ron's first link, except for call signs, sounds like
what I heard on 600m in the mid-20th century.

Thanks for coming back to the hobby.  We need you Mike.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org
_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

RE: REAL CW!!

Ron D'Eau Claire-2
These guys have it right, from what I saw. In the US maritime service the
FCC kept increasing the rules for stability, signal purity, keying, etc.,
but the rules applied to when the equipment was manufactured, so an old
console that drifted and yooped was legal as long as it was still in
service.

Ship owners never changed out something that worked, so as long as the radio
console was repairable (and there wasn't anything that couldn't be fixed)
they kept the same old console.

On an old vessel in the early 1990's I found an ancient black RCA console.
If you've not seen a shipboard radio console, there are pictures of one
aboard a restored WWII cargo ship here:

 http://www.arrl.org/news/features/1999/0216/2/?nc=1

The vessel I was called to work on had been taken out of the "mothball
fleet" to haul supplies to the Persian Gulf during Gulf War I and my eye was
drawn to a little panel on the console marked "Crystal Detector" with space
for a galena crystal and cat's whisker! You see, all radio consoles had both
a main and a backup receiver as well as main and backup transmitters. At one
time that crystal set was the "backup receiver". The crystal was long gone.
The console had been "upgraded" to a regenerative receiver for use in case
the main superhetrodyne receiver broke down in an emergency, but the panel
to mount the crystal was still there.

That's why MCW was required for all emergency communications: crystal sets
don't have BFO's <G>.

Ron AC7AC

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Fred Jensen
Sent: Tuesday, May 29, 2007 7:54 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] REAL CW!!


Mike Short wrote:
>  So why did they all sound so different? Was is operator preference or
> equipment limitations that determined the tone?
>
> Mike
> AI4NS
> (Just a young pup. Only 8 years of ham radio with 25 years in between
> licenses...)

Hi there Young Pup,

Equipment was different then, and really so aboard ship.  Chirp and
rough AC notes were common when I worked coastal marine in 57 [HS
senior].  Shipboard power was often not the most stable you'd likely
find today, radios tended to be old ... the recording was from the 70's,
some of that equipment may have been pre-WW2 ... and operating condx
weren't always all that great.  The maritime service tended to sail
their fleets until they rusted to the bottom.

I had a hard time copying some of that and 50 years ago as a 16yr old,
it would have been a slam dunk.  We're used to incredibly stable
receivers and transmitters, pure notes, perfect spacing of CW
[well...maybe not on SKN :-) ].  Most then used bugs, but there were a
number of straight keys as well, you can spot them in the audio clip.

Many of the bugs were hard to slow down.  Vibroplex's were notorious.
Being a teen and very poor, my bug was a J-36 I'd found at Sam's Surplus
Sales on Pico St in downtown Los Angeles.  It was sort of
proletarian-looking [OK, very proletarian], not shiny like those of my
crew mates, but it could produce civilized dot speeds without added and
ugly weights.

The recording at Ron's first link, except for call signs, sounds like
what I heard on 600m in the mid-20th century.

Thanks for coming back to the hobby.  We need you Mike.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org
_______________________________________________

_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

RE: REAL CW!!

Tom Price
In reply to this post by Ron D'Eau Claire-2
I am generally a lurker here but I HAD to tell you, Ron D'Eau Claire, how
much I enjoyed these links. I was called a "LID" in 1975 for less, and here
30 years later I feel better as I now have a defense. WOW what an eye (ear)
opener!
        It brought back a vivid memory of my Uncle Jesse, who was a radio
operator for the US Navy on an ocean going tugboat (forgot the name). It was
1967 or 1968 and we met him on his boat at San Pedro, California. He was
just about to get off work but was copying 5 letter code groups to paper. He
was writing these 5 letter codes with one hand and flipping the pages of a
newly purchased Playboy magazine with the other, commenting at the pictures
at the same time. I asked about it later and he said it became automatic
after a while. He also said that the message was possibly classified but he
never knew whether it was or not. Someone else decoded it.

        Again Ron, Thank you, this is great fun and infinitely enjoyable.
I'm even going to bookmark that site.

Tom Price WA6SUS

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Ron D'Eau Claire
Sent: Tuesday, May 29, 2007 2:02 PM
To: 'Elecraft Reflector'
Subject: [Elecraft] REAL CW!!

Much has been written on this reflector about the sound of the sidetone,
particularly the K2's sidetone, and about stability and narrow band
clickless keying, stable signals, with today's operators asking for
razor-sharp selectivity in order to copy signals in a crowded band.

Here are some recordings of actual COMMERCIAL CW maritime signals on the 600
meter (500 KHz) band from the 1970's in European waters....



_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: REAL CW!!

Ken Kopp
In reply to this post by Ron D'Eau Claire-2
Thanks Ron,

Takes me back a LONG time ...

Was R/O on several USC&GS/NOAA ships and "hung out"
at WPD in Tampa.  Lots of 400 - 500 kHz time.  Tx was a
TBL with M/G set in the "basement". (:-)

Anyone know where I could find an RCA 8506 ... or an 8510?
Or the Mackay equivalent/s? Google doesn't even turn one up!

73! Ken Kopp - K0PP
[hidden email]


_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

DMM question

Koaps
Hello all,

I had a question about using a digital multimeter for
AC millivolt measures.

I have a radio shack 24-range DMM and when I set it to
mV it never seems to go to zero, its constantly
counting numbers from 30-100 mV with the leads not
connected to anything.

If I change the range to .000 V it will show around
.020 to .009 with the leads not connected to anything.

When I tested U1 pin 1 and U3 pin 6 on my KX1 on the
.000 V range I got .000, is this an ok measurement or
is my DMM too screwy to use for AC mV measures?

All the DC and resistance measurements with it seemed
ok.

thanks,
-Chris


       
____________________________________________________________________________________Get the Yahoo! toolbar and be alerted to new email wherever you're surfing.
http://new.toolbar.yahoo.com/toolbar/features/mail/index.php
_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

RE: REAL CW!!

Arie Kleingeld PA3A
In reply to this post by Tom Price
Wow,

I listened to the "English Tea Party". Just as I remember it (including
the SP-cops :-)). Thanks for these wonderful sounds from the past.

73,
Arie PA3A
(also ex - PJUB, PCOH, PCOB and some other ships callsigns)

_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: DMM question

Jack Smith-6
In reply to this post by Koaps
Chris:

A DVM has relatively high input impedance and will pick up stray 60 Hz
and other things floating around (AM broadcast, perhaps) when the leads
are open. In essence, the leads act like a small dipole receiving antenna.

Short the leads together and it should read a lot closer to zero, unless
you live next door to a substation or a 50 KW AM broadcast transmitter.
(You can think of this as converting the leads to a loop antenna, which
has a lot less pickup than a dipole.)

Thus, the behavior you see is normal.

Jack K8ZOA
www.cliftonlaboratories.com



Koaps wrote:

> Hello all,
>
> I had a question about using a digital multimeter for
> AC millivolt measures.
>
> I have a radio shack 24-range DMM and when I set it to
> mV it never seems to go to zero, its constantly
> counting numbers from 30-100 mV with the leads not
> connected to anything.
>
> If I change the range to .000 V it will show around
> .020 to .009 with the leads not connected to anything.
>
> When I tested U1 pin 1 and U3 pin 6 on my KX1 on the
> .000 V range I got .000, is this an ok measurement or
> is my DMM too screwy to use for AC mV measures?
>
> All the DC and resistance measurements with it seemed
> ok.
>
> thanks,
> -Chris
>
>
>        
> ____________________________________________________________________________________Get the Yahoo! toolbar and be alerted to new email wherever you're surfing.
> http://new.toolbar.yahoo.com/toolbar/features/mail/index.php
> _______________________________________________
> 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

Reply | Threaded
Open this post in threaded view
|

RE: REAL CW!!

Phil Kane-2
In reply to this post by Ron D'Eau Claire-2
On Tue, 29 May 2007 20:28:48 -0700, Ron D'Eau Claire wrote:

>Ship owners never changed out something that worked, so as long
>as the radio console was repairable (and there wasn't anything
>that couldn't be fixed) they kept the same old console.

  Memories of all the old Victory ships that were pulled out of
  "red lead row" in the late '60s and into the '70s to ferry
  supplies to the war in SE Asia.  At the height of that
  operation we were doing mandatory Safety Radio Inspections at
  the rate of four per day in San Francisco alone.

  For those "sparks" who were hams and had transceivers on board,
  very often the ham gear was better than the installed radio
  console equipment (ship's equipment could not be used for
  hamming although I'm sure that some tried...)

--
   73 de K2ASP - Phil Kane
   Elecraft K2/100   s/n 5402



_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: DMM question

Koaps
In reply to this post by Jack Smith-6
Thanks Jack,

I wasn't sure what was going on but figured it was
something to do with RF in room. There's a repeater a
mile or two from me and my computer and TV on so maybe
that was driving it nuts.

I just figured when I was asked to do the AC checks,
setting the DMM to mV(actually is was on its
autoscaling mode) it would show the <20mV as
suggested, but instead it was going crazy.

I forced the scale to .000 V and I was able to get a
.002 to .000 reading on the pins so I figured I was
ok.

KX1 is pretty nice to build so far, in fact the KXPD
was the hardest thing I've done so far.

Now I will tackle the receiver circuits.

Thanks for the help,
-Chris

--- Jack Smith <[hidden email]>
wrote:

> Chris:
>
> A DVM has relatively high input impedance and will
> pick up stray 60 Hz
> and other things floating around (AM broadcast,
> perhaps) when the leads
> are open. In essence, the leads act like a small
> dipole receiving antenna.
>
> Short the leads together and it should read a lot
> closer to zero, unless
> you live next door to a substation or a 50 KW AM
> broadcast transmitter.
> (You can think of this as converting the leads to a
> loop antenna, which
> has a lot less pickup than a dipole.)
>
> Thus, the behavior you see is normal.
>
> Jack K8ZOA
> www.cliftonlaboratories.com
>
>
>
> Koaps wrote:
> > Hello all,
> >
> > I had a question about using a digital multimeter
> for
> > AC millivolt measures.
> >
> > I have a radio shack 24-range DMM and when I set
> it to
> > mV it never seems to go to zero, its constantly
> > counting numbers from 30-100 mV with the leads not
> > connected to anything.
> >
> > If I change the range to .000 V it will show
> around
> > .020 to .009 with the leads not connected to
> anything.
> >
> > When I tested U1 pin 1 and U3 pin 6 on my KX1 on
> the
> > .000 V range I got .000, is this an ok measurement
> or
> > is my DMM too screwy to use for AC mV measures?
> >
> > All the DC and resistance measurements with it
> seemed
> > ok.
> >
> > thanks,
> > -Chris
> >
> >
> >        
> >
>
____________________________________________________________________________________Get
> the Yahoo! toolbar and be alerted to new email
> wherever you're surfing.
> >
>
http://new.toolbar.yahoo.com/toolbar/features/mail/index.php

> > _______________________________________________
> > 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
> >
> >  
>



 
____________________________________________________________________________________
Sucker-punch spam with award-winning protection.
Try the free Yahoo! Mail Beta.
http://advision.webevents.yahoo.com/mailbeta/features_spam.html
_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: REAL CW!!

Doug Smith-9
In reply to this post by Ken Kopp
On Wed, 2007-05-30 at 06:08 +0000, Ken Kopp wrote:
> Was R/O on several USC&GS/NOAA ships and "hung out"
> at WPD in Tampa.  Lots of 400 - 500 kHz time.  Tx was a
> TBL with M/G set in the "basement". (:-)
>
> Anyone know where I could find an RCA 8506 ... or an 8510?
> Or the Mackay equivalent/s? Google doesn't even turn one up!

Yes, it is good to hear that stuff again.  I spent a lot of time sailing
as R/O in the late 1980s, running between Rotterdam and the USA east
coast.  500 KHz was fun.  Also spent a lot of time in the Med during
that era.  There were a kazillion of those tiny coastwise freighters and
all of them buzzing, chirping and honking away.  Heh..

Ken, I've got Mackay gear but it's more "modern".  3020A receivers out
of the MRU-35 console.  Even an 8050 transceiver which is still in
service on many of the MSC ships.  I sailed the USNS Mendonca in 2003
(part of OIF) and we had the 8050 on board.  Always liked the Mackay
stuff..

73,
-Doug, W7KF


_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: REAL CW!!

John GM4SLV
In reply to this post by Ron D'Eau Claire-2
On Tue, 29 May 2007 14:01:56 -0700
"Ron D'Eau Claire" <[hidden email]> wrote:

> Much has been written on this reflector about the sound of the
> sidetone, particularly the K2's sidetone, and about stability and
> narrow band clickless keying, stable signals, with today's operators
> asking for razor-sharp selectivity in order to copy signals in a
> crowded band.
>
> Here are some recordings of actual COMMERCIAL CW maritime signals on
> the 600 meter (500 KHz) band from the 1970's in European waters
>
> http://www.n1ea.coastalradio.org.uk/W1DM_500_EU_74.zip
>


I've been listening to the various recordings here and enjoying them
enormously!

Can someone develop a K2 mod to give us (switchable) control of the CW
quality - I like the rich variety of signals on these recordings. The
bands these days sound a bit too perfect with all the T9X signals
around! I suppose moving a large PSU near the K2 should give the AC
modulation, how do we het the bullfrog on acid effect?

It's much easier to copy a rough, chirpy signal in the QRM because it
stands out from the norm.

Some of the fists on the recordings were "interesting" too!


I've just recalibrated my K2 filters to give me a widest CW filter at
1.5KHz so I can re-create the "wide open - hear everything" feel!

It's HF CW field day in Europe and sitting on 20m (albeit not in great
shape propagation wise) with a wide filter is great fun...

Cheers,

John GM4SLV
_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Alternative to Spectrogram

Gregg W6IZT
I am not sure if this has been posted before but I find that DL4YHF's
Spectrum Lab is far superior to Spectrogram.

Freeware available at

http://freenet-homepage.de/dl4yhf/spectra1.html

73
Gregg



_______________________________________________
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

Reply | Threaded
Open this post in threaded view
|

Re: REAL CW!!

David Cutter
In reply to this post by John GM4SLV
There were one or two interesting signals there last night, one sounded
almost like spark!  I prefer a wide setting for most of the time.

David
G3UNA
G4BP/P

----- Original Message -----
From: "John GM4SLV" <[hidden email]>
To: <[hidden email]>
Sent: Sunday, June 03, 2007 10:18 AM
Subject: Re: [Elecraft] REAL CW!!

> It's HF CW field day in Europe and sitting on 20m (albeit not in great
> shape propagation wise) with a wide filter is great fun...
>
> Cheers,
>
> John GM4SLV

_______________________________________________
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