[Hammarlund] RF generator for HQ-180

[Philip Atchley]

Hi,

Guess I may as well put my Tuppence worth in here also 8-)

A couple years or so back I too had a nice AN/URM-25 (don't recall the 
letter designator).  I sold it when I got a later piece of gear.  Said 
later gear went "belly up" and left me high and dry.  I shulda' kept the 
URM. . .

However, for LF work I DO have a nice B&K 3010 function generator that 
outputs from .1CPS to 1MCs, Sine, Square or triangle wave that is useful 
for IF alignment (with external attenuator).  It seems quite stable, AND 
can even be "swept" over a 100/1 frequency range by an external source! 
  For RF alignments I have a homebrewed marker generator that outputs 
markers at 5, 4, 2 & 1MC increments OR 500, 100, 50 & 25KC increments. 
With variable output and 50 Ohm attenuator I've found it to be VERY 
useful for BA alignments!

So, while I can't make "absolute" receiver sensitivity measurements, I 
am able to align things quite accurately.


73 de Phil  KO6BB
My DXing tools (RECEIVERS), all fully overhauled:
    Hammarlund SP-600 R-274C/FRR, 18 tubes (Circa 1952)
    National NC-60 Special, 5 tubes (Circa 1960)
    Heathkit Mohican  (Circa 1962)
    Icom IC-751 Digital Transceiver  (Circa 1986)
    Grundig S350 Digital Portable (Circa 2004)

THE BEACONEER'S LAIR:  http://www.geocities.com/ko6bb/
QSL GALLERY: http://photobucket.com/albums/y123/KO6BB/
Merced, Central California,    37.3N  120.48W  CM97sh

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Craig Roberts wrote:
> I have a 25D and it DOES have the extra output jack (from which I feed 
> my Heathkit freq counter). Very handy.
> 
> I consider old military test gear -- like the AN/URM-25  -- true 
> bargains for boatanchor service.  I don't use them on my high-tech 
> digital stuff, but for tube-type rigs, they're terrific. These 
> instruments are full-featured, versatile, accurate, intuitively 
> operated, virtually bulletproof -- and gray.