[R-390] TEST EQUIPMENT RECOMMENDATION

[DJED1 at aol.com]

It sounds like you have most of what you need.  The VTVM is critical  for 
some measurements, and the scope is useful for  troubleshooting.  You will need a 
signal generator (my Heathkit  generator left a bit to be desired).  The 
URM-25 was originally used with  the R-390A, and is available at reasonable 
$100-200 price.  If you  want to take a step up in the generator, you could go to an 
HP 606 (tube type),  which is a real boatanchor by itself.  I still have my 
URM-25, but moved up  to an HP 8660A ($300), which was the first of their 
solid-state synthesized  signal generators.  I can trust the signal levels a bit 
better than the  URM-25, and the frequency readout is infinitely better.  I also 
picked  up an HP AC voltmeter to use in measuring the signal and noise in  
sensitivity measurements, and a HP frequency counter, mostly for setting  PTOs.  
The VTVM can serve the same purpose as the AC voltmeter. I  also have an 
inexpensive tube tester.
I guess the only other test item that I'm looking for is a capacitor  tester, 
which will then allow me to check every kind of component in the  radio.  
Good luck in your search.
Ed  W2EMN



**************Biggest Grammy Award surprises of all time on AOL Music.     
(http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp003000000025
48)