[R-390] Signal Generators, et al

[nryan at mchsi.com]

Hi, Bob and list,

This is exactly the same setup I have and I'm very pleased with it.  Sure, the AN/URM-25D is a pain to zero in at higher frequencies due to play in the gears.  Has anyone tried eliminating the slack?

Otherwise, my SG ain't broke, so am reluctant to "fix" it.  By sheer luck, at a hamfest I found an exact replacement tuning knob fitted with a crank handle which greatly speeds up changing frequency.

The TS-505D is a joy to use.  I always get a kick out of nudging up the diode load reading with each alignment iteration between coil and cap on the RF deck.  The analog readout is very responsive and quick to read.

Another part of the fun is the retro aspect -- stepping forward into the past if you will.  I operated R-390s in the USASA as a kid and later in life got into these receivers as a result of that experience.

73 de Norman, KG4SWM


----- Original Message -----
From: rbethman <rbethman at comcast.net>
To: R-390-List <R-390 at mailman.qth.net>
Sent: Fri, 14 Jan 2011 12:35:28 -0600 (CST)
Subject: [R-390] Signal Generators, et al


However, for signal generation to align my R-390A and SP-600, I use the 
tried and proven AN/URM-25, a TS-505D/U (VTVM), and a TS-585 connected 
to the audio output.

It worked for decades, and I'm NOT about to spend a bunch of $$$ to 
change over.

I believe that Roger, AI4NI will say that this line-up is more than 
adequate and up to the task.

Bob - N0DGN