Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Howard -
If it's not "dead", the calibrator is sufficient to get it very close.
You can hear the second harmonic of the BFO beating with the calibrator
to set that, and then use the calibrator for the RF and IF alignment
tasks. Detune the Preselector to reduce the signal level when adjusting
the IF's, and I would strongly suggest skipping the Crystal Filter and
Crystal Match Alignment portion. The wrapped wires are almost certainly
OK, unless someone has been playing with them, which is unlikely. A
"real" VTVM is handy, but the S-Meter will work for all but setting the
RCVR SENS control to -1.35V. A "good" DMM (one with a 10-25 Megohm
input impedance will work for that. Many of the "bargain" DMMs have
very low input Z and will NOT work for this adjustment.
That said, a stable signal generator that will tune around 5.6 MHz makes
things a little easier.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B & C-Line Service Supplement CDs
<www.k4oah.com>
Howard Traxler wrote:
"Howard Traxler" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Anyone know what equipment I will need to tune up my R-4A?
Thanks.
73 de Howard, WA9RYF
----- Original Message -----
From: "Howard Traxler" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, October 14, 2007 4:18 PM
Subject: [drakelist] Question 1 of many, TR-4 & R-4(A)
:
: "Howard Traxler" <[EMAIL PROTECTED]> made an utterance to the
drakelist gang
: ----------------------------------------------------------------------
: Hi all,
: Would like to use my newly acquired R-4A as the receiver in the TR-4
: station. What connections are to be made between? There are two RCA
jacks
: on the rear panel of the chasis of the TR-4 just west of the power plug.
: There seems to be a mod of the R-4A: Where there once was a slide switch
: (left side, below the middle lower case screw), there are now what seem to
: be two 1/8" jacks.
:
: Could anyone tell me about the mod and the connections I need to make?
:
: Thanks lots.
:
: 73 de Howard, WA9RYF
:
: Howard K. Traxler, Technology Specialist
: www.TraxlerEnterprises.com
: /*-- THINK GOD --*/
:
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