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

Sat May 16 22:00:44 EDT 2026

Ages ago, these receivers and panadapters were easy to find. Then 
purchasers  found out they operated on 400 cycle power. Massive numbers 
were then trashed for whatever parts were considered useful.

     B. Gentry  KA2IVY

On 5/16/26 9:15 PM, Gary Hitchner via Milsurplus wrote:
>
> Thanks for the details Michael, would like to know as much as you want 
> to type!
>
> To be honest, one of the reasons I asked, I saw the ALA-10 in a old 
> Fair catalog, (no. 70) , IP-274/ALA-10. The only description given is 
> it was used with a IF of 30 MC.
>
> Suspected it might have been paired with the APR-4Y, I was going to 
> ask you about it soon.
>
> Interesting, the R-444/APR-4Y is also in the same catalog.
>
> So, Jeff started the thread, must be some ALA-10’s around if listed in 
> the catalog, no idea how common they are now.   $19.95 would get you 
> one back in the day. 😊
>
> Gary
>
> *From:*Michael Hanz <aaf-radio-1 at aafradio.org>
> *Sent:* Saturday, May 16, 2026 5:48 PM
> *To:* Gary Hitchner <talgarth at comcast.net>; 'comcast' 
> <kg2bz at comcast.net>; milsurplus at mailman.qth.net; 'Military Radio 
> Collectors Association' <MRCA at mailman.qth.net>
> *Subject:* Re: [Milsurplus] latest acquisition from Hamvention. APR-4Y
>
> 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  <mailto:milsurplus-bounces at mailman.qth.net>
>
>     <milsurplus-bounces at mailman.qth.net>  <mailto: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  <mailto:milsurplus at mailman.qth.net>; Military Radio Collectors Association
>
>     <MRCA at mailman.qth.net>  <mailto: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
>
>
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