[MRCA] [Milsurplus] latest acquisition from Hamvention. APR-4Y

[Michael Hanz]

Looks like the images are suspect to the checkers, so here it is without 
the images:

On 5/16/2026 5:48 PM, Michael Hanz wrote:
>
> As far as I can recall, all of both the AN/APR-1 and AN/APR-4 series 
> used a 30MHz IF.
>
> I loved the AN/APA-10 for use with the two lower freq Hallicrafters 
> receivers, but the 30MHz function, not so much. The development 
> community was apparently of the same mind, resulting in the AN/APA-38 
> single IF frequency panoramic adapter being designed for the APR-4.  
> It was a significant improvement.
>
> Now, the AN/APR-4Y was part of a next generation set called the 
> AN/ALR-5.  It had a single tuning unit called the CV-253/ALR that 
> covered four bands from 38 to 1,000MHz.  Naturally you couldn't use a 
> single antenna to cover those four bands, so there were still four 
> antenna jacks provided.:
>
> .
>
> The APA-38 could potentially be used with the AN/ALR-5, but at about 
> the same time an update of the APA-38 was produced and labeled the 
> ALA-2, shown below:
>
> It was a rapid moving time for countermeasures development, and 
> shortly thereafter a revised version of the AN/ALA-2 was produced that 
> incorporated a "look-through" feature that permitted a quick single 
> scan of the band while jamming enemy radar.  That would allow you to 
> see if those radars had changed their operating frequency to avoid 
> your jamming.  The internal change was ridiculously simple.  That 
> version was called the AN/ALA-10, and was interchangeable with the 
> ALA-2.  The L-T feature required it to have a classification at the 
> bottom, now long removed officially.
>
> Probably more than you wanted to know...
>
> - Mike  KC4TOS
>
> On 5/16/2026 9:21 AM, Gary Hitchner via Milsurplus wrote:
>> Maybe Michael will comment, saving time looking up the IF frequencies, good
>> question. Would the APA-38 or APA-10 used with  the APR-4 also used with the
>> APR-4Y?
>> I assume the APR-4 was released earlier and 1st, was the APR-4Y not used
>> until after the war?
>> Gary
>>
>> -----Original Message-----
>> From:milsurplus-bounces at mailman.qth.net
>> <milsurplus-bounces at mailman.qth.net> On Behalf Of comcast via Milsurplus
>> Sent: Saturday, May 16, 2026 6:36 AM
>> To:milsurplus at mailman.qth.net; Military Radio Collectors Association
>> <MRCA at mailman.qth.net>
>> Subject: [Milsurplus] latest acquisition from Hamvention. APR-4Y
>>
>> Folks pick one of these up in working condition anyone have one of the
>> panoramic indicators for this that they would like to sell? Thanks Jeff