Bob,
Yep...works great and I do that the first time to a new band...then
from then on, just re-dip the plate, and touch up the load a little.
73,
Lee, KC9CDT
-----Original Message-----
From: Robert Fish <[email protected]>
To: Jerry Semones <[email protected]>
Cc: drakelist <[email protected]>
Sent: Fri, Aug 5, 2011 11:55 am
Subject: Re: [Drakelist] thoughts
Hi Ron,
I remember reading a tip once on one of these lists about tuning your
transmitter by putting it in spot mode and finding the signal with your
receiver and peaking the pre-selector and the plate using the
receiver's
s-meter.
Well, it worked ok for me on the pre-selector, but I could never get a
peak with the plate control (the most important one for your finals).
But, through eperimentation I stumbled across a way that works great
for
me. I put the transmitter in tune with the gain turned all the way
down.
Then find the signal with the receiver. The signal should still be very
strong.
Then I just peak everything for the highest s-meter reading. If the
s-meter is too high, tune the receiver slightly off frequency to get a
lower s-meter reading so you can easily see the peaks. once you have
peaked everything, it should be very close to resonance and you can
then
turn the gain up and touch up the tuning again. This way your finals
aren't being driven very hard or at all when your searching around for
the correct plate adjustment. It works for me because I was also
nervous
and way too slow using the conventional method of tuning up.
Have Fun,
Bob K6GGO
I have been using a homebrew tuning 'pecker' for years without
ruining the finals in my Drake's or my SB200 amp.
They allow tuning the finals without stressing them. The only
requirement is that you use a peak reading wattmeter.
Here is a link if you are interested.
http://www.3898pecker.com/
73' Jerry K4FJK
-----Original Message----- From: ron
Sent: Friday, August 05, 2011 11:20 AM
To: [email protected]
Subject: [Drakelist] thoughts
Gang,
I been enjoying the Drake TR4C for a spell, then let it rest awhile
while using my "current" solid state radios.
I decided to return to Drakes and whoa!
I forget how to tune these babies. I had to re-learn
(has something to do with my grey hair I suppose).
I was wondering if you guys get nervous too during the tuning process
so as not to ruin the finals.
It just scares me sometimes ....
72
Ron, wb1hga
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