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From: Ron Baker wb4...@comcast.net
To: RadiosRUs radiogu...@hotmail.com; drakelist@zerobeat.net
Sent: Thursday, 25 June, 2009 3:48:06 PM
Subject: Re: [Drakelist] TR-7 Question
Pete, the quick answer to both questions is yes. Unfortunately Drake, when
they were liquidating
Wow, Jim, with that fine idea, and a laser to cut the s/n through the
front panel to the extrusion, hummm maybe we can finance both our
retirements HI HI
73,
Don, WB5HAK
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Drakelist@zerobeat.net
In looking at one of the recent auction sites I note that a TR-7A is listed as
being authentic. The proof was to take off the front panel and demonstrate that
a S/N behind the panel matched the S/N on the back of the radio.
Just a curiosity and perhaps for those of us new to the list, has
...@zerobeat.net] On Behalf Of
RadiosRUs
Sent: Thursday, June 25, 2009 10:14 AM
To: drakelist@zerobeat.net
Subject: [Drakelist] TR-7 Question
In looking at one of the recent auction sites I note that a
TR-7A is listed as being authentic. The proof was to take
off the front panel and demonstrate
Ron,
I don't disagree with in some cases purchasing a TR7A is a buyer beware.
But I must say that IF the TR-7 has had all the modifications that
upgrade a TR-7 to a TR-7A, the only remaining significant difference
is the use of a '1496 balanced modulator in the 2nd IF/Audio board
rather than the
Tom,
You are right, physically there is no real difference between a late, loaded
TR7 and TR7A, but the dealers get a real premium for that A label, so
one should get what he pays for, hi. I liked Drake's policy of an old front
panel replace with the identical, so that wasn't a problem till
On Thu, 25 Jun 2009 21:32:05 -0500, Don Cunningham wrote:
You are right, physically there is no real difference between a late, loaded
TR7 and TR7A, but the dealers get a real premium for that A label, so
one should get what he pays for, hi.
I wonder why no one is selling a mini-silkscreen
Dave -
T/R problems are often associated with the 10R and 10T control lines and
their fuses, Q306 and Q307.
Check both busses, marked on the parent board traces. Each must be very
close to +10 when receiving or transmitting respectively AND very close
to 0V inversely. You'll probably find
Hi Gents,
I recently acquired my first TR-7 (thank you Evan K9SQG for sharing and
thank you Gary W8PU for some technical guidance in finding a shorted pin
diode). When I transmit on phone, I'm getting some garbled audio fed back
into both the headphones and the external speaker connected via
Dave,
Has anyone answered your question?? It sounds like the transmit/receive
switch transistor problem that Garey Barrell helped me through with a
couple of TR7's. If you haven't received any answers, I'll dig out my
service manual and guide you through the checks and fix.
73,
Don, WB5HAK
On Wed, 10 Dec 2008 15:33:08 -0500, [EMAIL PROTECTED] wrote:
When I transmit on phone, I'm getting some garbled audio fed back
into both the headphones and the external speaker connected via the rear
panel.
It might help a little if you better define garbled - is it distorted
but
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