I am waiting for a T-4XC and manual that I just purchased to arrive and have
not found a good clean copy of the crystal frequency chart, so I would like to
have someone confirm the frequencies of several crystals I need for extra
coverage:
Usable frequency - 1.8 - 2 Mhz --- Crystal freq - 12.6
There is a good manual online
at http://www.wb4hfn.com/DRAKE/DrakeManuals/T4XC/Manual_T4XC.htm
The crystal chart starts on Pg-12.
Yes, you have the frequencies right. ICM is the place to go.
73,
Bob WW3QB
From: Henry Foglesong hwfogles...@gmail.com
To:
Curt -
I haven't seen an answer yet. Mine does the same thing, even a couple of kHz
one way or the other.
I use the R-7, so hardly ever use the RV-7 and hadn't noticed it before. I suspect it has something
to do with the GATE timing of the DR-7 counter board. I don't 'think' the GATE is
Curt -
Just tried it with the R-7 in transceive mode and does the same thing. Still think it's the counter
that has the anomaly
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
www.k4oah.com
Curt Nixon wrote:
Good Morning All:
I concur with Master Barrell. Although I haven't actually checked mine, I do
seem to recall that it does that. It makes sense that it is an anomaly of the
frequency counter. It is a pretty ordinary freq counter circuit after all, and
counts a real RF signal in the radio. At the instant the radio
Thanks Garey and Jim:
I kind of came to a similar conclusion after playing with the rig for a
few hours. Monitoring shows no sign af any glitch on the real signal
and I cannot hear any blip in rx either. Interesting that it is
assymetric...ie does not jump when going from Rx to Tx but does
Before I start stripping this T-4XB, I'd like to know that I'm not killing a
niche collectable. This rig looks like it has had the CW mode erased from
it, has a lot of shielded cable that the factor didn't install and a big, huge,
honkin' relay underneath.
Since I wanted a stock T-4XB to do
FWIW, Mine does the same thing since I have owned them. My limited
investigation found nothing wrong with any of the oscillators.
--- On Tue, 8/16/11, Curt Nixon cptc...@flash.net wrote:
From: Curt Nixon cptc...@flash.net
Subject: Re: [Drakelist] RV-7 Frequency Bounce on TR
To: Jim Shorney
I have a homebrewed RV-7 substitute that I just tried on 40M CW. There is no
change in the displayed frequency on the TR-7 if the RV-7 is in control. If I
use it for only TX or only for RX, the displayed frequencies are as expected
without any jumpy error.
Bob K9JU
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