[R-390] HP-606A

[Roy Morgan]

On Feb 23, 2009, at 4:31 PM, Barry wrote:

> Well, as much as I'm trying to keep from collecting radio-related  
> "stuff", I
> "won" an HP-606A today.  Any advice on this one?

Yes: here are some random suggestions:

0) Find a good place for it on your bench and leave it there.

1) Put the 12B4's used in the power supply on your want list.

2) Do a good mechanical overhaul/lubrication.  The mechanicals of that  
thing are one of it's strong points.  You won't realize what a gem  
this thing can be till the tuning and output attenuator are working  
like new.

3) Do start looking for an 8708A. This gadget allows precision and  
stable setting of the frequency However, you need the B version of the  
oscillator to use it.  So start looking for a nice B. If you have an A  
and a B, then you can build a signal combiner and do intermodulation  
tests on receivers.

4) Replace the filter caps and run the generator often.  It likes to  
be used.

5) One of my collected emails on the thing talks about poor long term  
frequency calibration stability.. Possibly from the ceramic forms used  
in the oscillator tank circuit.  So .. leave the thing on all the time.

6) Stand by for a copy of my notes file - sent separately.  A few  
interesting observations and discussion of the attenuator.

Roy


Roy Morgan
k1lky at earthlink.net
529 Cobb St.
Groton NY, 13073