"Win" wrote in message
...
I am interesting in a good layout for this mod. Any food ideas out
there?

Win, w0lz

Win -

Well, first you need some good RF relays for QSK.
You can use vacuum relays (Kilovac or Jennings) - MaxGain; Surplus Sales or
Fair Radio Sales
http://www.mgs4u.com/relay.htm
http://www.surplussales.com/Relays/REVacRel-1.html

and/or a fast RF reed relay like the Matsu****a 1mS device.
http://www.somis.org/

w9gb

On Fri, 1 Jul 2005 22:59:00 -0500, "gb"
wrote:

"Win" wrote in message
.. .
I am interesting in a good layout for this mod. Any food ideas out
there?

Win, w0lz

Win -

Well, first you need some good RF relays for QSK.
You can use vacuum relays (Kilovac or Jennings) - MaxGain; Surplus Sales or
Fair Radio Sales
http://www.mgs4u.com/relay.htm
http://www.surplussales.com/Relays/REVacRel-1.html

and/or a fast RF reed relay like the Matsu****a 1mS device.
http://www.somis.org/

w9gb


Thanks, Greg. Actually I picked up the relays and other parts from
Richard (somis.org). Now I am just thinking about where I will put
the circuits. I am thinking about putting most behind the meters over
the filiment transformer, and those associated with the relays under
the chassis where the old relay will be removed.

I was just looking for ideas from those who had layed this out before
me in this amp.

Read your QRZ bio. Me, too, 40 meters CW...........

Thanks

Win,/w0lz

"Win" wrote in message
...
On Fri, 1 Jul 2005 22:59:00 -0500, "gb"
wrote:

"Win" wrote in message
. ..
I am interesting in a good layout for this mod. Any food ideas out
there?

Win, w0lz

Win -

Well, first you need some good RF relays for QSK.
You can use vacuum relays (Kilovac or Jennings) - MaxGain; Surplus Sales
or
Fair Radio Sales
http://www.mgs4u.com/relay.htm
http://www.surplussales.com/Relays/REVacRel-1.html

and/or a fast RF reed relay like the Matsu****a 1mS device.
http://www.somis.org/

w9gb


Thanks, Greg. Actually I picked up the relays and other parts from
Richard (somis.org). Now I am just thinking about where I will put
the circuits. I am thinking about putting most behind the meters over
the filiment transformer, and those associated with the relays under
the chassis where the old relay will be removed.

I was just looking for ideas from those who had layed this out before
me in this amp.

Read your QRZ bio. Me, too, 40 meters CW...........

Well 40 meter CW is where I started over 30 years ago ..
when the Novice band was 7.15 to 7.20 !! Can't wait till the broadcasters
will move -- will be a first class early evening DX band (sans static!)

I did see a couple of Internet web pages with the conversion -- but those
web pages are now gone - I'll keep an eye open. I think Richard did do a
conversion on an earlier SB-200 ... you may also want to look at the
Ameritron/MFJ QSK-5 PIN diode internal board approach (for ideas how or how
not to do it).
http://www.ameritron.com/man/pdf/QSK-5PC.pdf

w9gb

Richard did an article in QSt many years ago on QSK for the SB-200.
But, as I am sure you know, Ameritron is well represented at the ARRL.
Somehow that articke is no longer in the archive.
Well 40 meter CW is where I started over 30 years ago ..
when the Novice band was 7.15 to 7.20 !! Can't wait till the broadcasters
will move -- will be a first class early evening DX band (sans static!)

I did see a couple of Internet web pages with the conversion -- but those
web pages are now gone - I'll keep an eye open. I think Richard did do a
conversion on an earlier SB-200 ... you may also want to look at the
Ameritron/MFJ QSK-5 PIN diode internal board approach (for ideas how or how
not to do it).
http://www.ameritron.com/man/pdf/QSK-5PC.pdf

w9gb

Richard did an article in QST many years ago on QSK for the SB-200.
But, as I am sure you know, Ameritron is now well represented at the
ARRL. Somehow that articke is no longer in the archive. I guess
articles on modifications to old amplifiers does not sell new
amplifiers.

Anyway, I think I have it figured out. Both of the connections to the
cathode bias swicth will be on the HV power supply board. I will just
place my circuit in proximity to that board. I will place the relays
where the old RF relay was. Should you come across anything, I would
like to see it, though.

In the early 60s I was rock bound to a DX-60 on a 40 meter dipole.
The receiver was an SX-101. I remember having a cigar box of rocks,
and tuning up and down the band after every call. It was a big thing
when I got my first, not so stable, VFO. But, looking back, those
were great days. I don't get the kinds of QSOs today I did back then.

Thanks again

Win, w0lz