Hello,
I'm totally new to tube project. I recently found two PCL86 and I was
looking
for simple schematic to start with. I found lots of transmitters and a
good
amount of regenerative receivers schematics. I was wondering if it's
possible to build any kind of single (or even two) tube tx-rx for the
same frequency (even a
fixed one in the 80m or 40m bands) perhaps using the same xtal
oscillator
for both receive and transmit sections. Don't flame if I'm just
telling nonsense
HI.

Best 73

Francesco IZ5DWF

Francesco IZ5DWF wrote:
Hello,
I'm totally new to tube project. I recently found two PCL86 and I was
looking
for simple schematic to start with. I found lots of transmitters and a
good
amount of regenerative receivers schematics. I was wondering if it's
possible to build any kind of single (or even two) tube tx-rx for the
same frequency (even a
fixed one in the 80m or 40m bands) perhaps using the same xtal
oscillator
for both receive and transmit sections. Don't flame if I'm just
telling nonsense
HI.

It's possible, and there are some walkie-talkie circuits that are
a Pierce crystal oscillator when the key is down, and then reconfigure
themselves into a regenerative receiver when the key is up. This
means the key consists of a whole heck of a lot of contacts. I think
the old PRC-6 might be something worth looking at.

BUT, I think you're probably going to have an easier time building
a seperate transmitter and receiver and putting them on the same
chassis. Check out the ARRL Mobile Manual for some really neat
tube-type transceiver projects, some of which are quite small.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

If you want to get into tube homebrew you'll want to join the glowbugs
mailing list which is dedicated to just that area. They're also a good
group of folks, and they will _not_ flame you for your questions.
Here's the sign-up info:
----------------
For homebuilding transmitters and receivers using tube technology,
there is the Glowbugs e-list; send an email to:
and only write:
subscribe glowbugs
----------------

I agree with the other comment you received, which is to build the
transmitter and receiver separately (you can use a common power
supply). The PCL86 (14GW8) should make an excellent transmitter
running about 10W input. The other PCL86 could be used in a
regenerative receiver, but you might want to add another tube or two
for either an isolation RF amp and/or another stage of audio
amplification. Join up with glowbugs and you'll have a bunch of folks
suggesting possible designs. In the meantime here's a link you should
enjoy:

http://www.geocities.com/CapeCanaver...ham/pwxcvr.htm

73,
Mike, KK6GM

73,
Mike, KK6GM

--=20
------------------------------------------------------
Antonio Vernucci, I0JX US call: K0JX
50-MHz beacon: 50.004 KHz FSK 10W 5/8 vertical antenna
home page: http://www.qsl.net/i0jx
e-mail: k0jx {at} amsat {dot} org
------------------------------------------------------
"Mike Silva" ha scritto nel messaggio =
oups.com...
If you want to get into tube homebrew you'll want to join the glowbugs
mailing list which is dedicated to just that area. They're also a =
good
group of folks, and they will _not_ flame you for your questions.
Here's the sign-up info:
----------------
For homebuilding transmitters and receivers using tube technology,
there is the Glowbugs e-list; send an email to:
and only write:
subscribe glowbugs
----------------
=20
I agree with the other comment you received, which is to build the
transmitter and receiver separately (you can use a common power
supply). The PCL86 (14GW8) should make an excellent transmitter
running about 10W input. The other PCL86 could be used in a
regenerative receiver, but you might want to add another tube or two
for either an isolation RF amp and/or another stage of audio
amplification. Join up with glowbugs and you'll have a bunch of folks
suggesting possible designs. In the meantime here's a link you should
enjoy:
=20
http://www.geocities.com/CapeCanaver...ham/pwxcvr.htm
=20
73,
Mike, KK6GM
=20
73,
Mike, KK6GM