[Milsurplus] ARR-7 No Thanks

[wf2u at ws19ops.com]

Talking about dial non-resolution - the ARB is a champion in this department.
Otherwise, it's an amazingly well performing receiver.
I don't use it as a bandcruiser. It's presently paired up with my  
recently restored ATD, and is normally sitting on 3570 KHz (The Old  
Military Radio Net CW frequency). The ATD is set on two channels on 80  
M - one is the OMRN frequency and the other is the 3885 KHz AM calling  
frequency which is also used by OMRN for the Saturday morning AM net.
It's easy to set the ARB on frequency - just zero beat it with the  
appropriate channel on the ATD. To make it even easier to spot  
frequencies, I just found a nice LM-13 with the shock mount and book  
so it'll get plugged in to the ARB for power and the RF connector will  
be hooked up to the CFI connector on the ATD.
This is basically the same setup as used in the original Navy system.
The only modern addition I use is an external audio filter - it helps  
on CW when the band is crowded - 915 KHz IF but no crystal filter a la  
BC-348.

I think it's a bit presumptious to judge a WW2 era military equipment  
on SSB performance, although most of them if properly fed, tuned,  
handled, gain control adjusted will receive that mode - I never had an  
ARR-7 but the ARB is stable, and I'm running it completely original,  
unmodified, with its dynamotor.
The ARR-7 is a much more sophisticated receiver than the ARB.

I haven't hooked up my RU-19 yet but I expect a fairly decent  
performance from it as well.

Personally, I never judge a pre-SSB receiver by its SSB performance -  
it was not designed for that mode. If it works OK on SSB, it's a bonus  
in my opinion.

Of course as they say, your mileage may vary...

73, Meir WF2U


Quoting Hue Miller <kargo_cult at msn.com>:

>> The "standard"  HF ELINT receiver at the time was the
>> Hallicrafters AN/ARR-7 (basically an SX-28A in a single ATR
>> configuration), and IMO it was superior to the BC-348 in a number of
>> ways...I prefer > it over the BC-348 for ham use, frankly.
>> Mike
>
> How about that dial non-resolution and the no-bandspread tuning?
> ( i.e. like a 4-bander 2-dial set but without any bandspread tuning )
> When i read the old R E Goodheart ads talking about their modified
> ARR-7 as an ideal SSB receiver, i have to think about how much
> real fun it would be tune tune in SSB on say, 15 meters.  -Hue
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