Curt et al,
I've had good success with Antique Electronic Supply on the web at
http://www.tubesandmore.com/
They have lots of good NOS tubes and you might be able to request a particular
brand such as Sylvania.
73,
Eric KA8FAN
From: Curt
To: drakelist@
Good input, Joe. Now we know that the NTE device is safe. That probably
means the Drake circuit used some explicit frequency compensation and didn't
rely on the slow power transistor for stability.
Dennis AE6C
On Fri, Jul 10, 2009 at 10:49 PM, Joe Pyles wrote:
> I've replaced the audio output
The behavior of my T-4X with plate current dip normally and load properly on
80 & 40 but not on higher bands ended up being the 6JB6 tubes. My T-4XB
worked fine on all bands, so first I installed the final tubes from the T-4X
into the T-4XB. When I did that, the T-4XB behaved as the T-4X had,
Thanks Franco for the info
I had thought about the using the 8640 as the crystal as you suggest so will
give that a try. I think that the crystal is used for aligning the 160M
band and since I dont work that band (no antenna) I can probably skip that
step.
The Drake alignment instructions are s
On Sat, 11 Jul 2009 08:01:47 -0700, Michael Miller wrote:
>Both Drake's 1544 adapter and Lee Craner's homebrew adapter use the
>R7 In/Out socket to power the RV75. This socket is limited to 0.25 Amp.
>However, my R7 is powered by 13.8 VDC through this socket already and
>it would make for a mu
Hi Jim,
Both Drake's 1544 adapter and Lee Craner's homebrew adapter use the
R7 In/Out socket to power the RV75. This socket is limited to 0.25 Amp.
However, my R7 is powered by 13.8 VDC through this socket already and
it would make for a much neater project if the RV75 could be wired
into t
A local store sold me a BD243C. Physically it is different (it looks
like a LM7812), but they told me it is equivalent to the 40310. What
do you think?
73,
Franco IZ2OOS
2009/7/11 Joe Pyles :
> I've replaced the audio output device in a couple of 2C's with the NTE175
> and had NO oscillation prob
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