[MRCA] PRC-47 and M-80

[Clare Owens]

Oh darn, I did it again.  I should have written PRC-74 and M-80.

I just tested connecting an H-250 and an M-80 that I purchased years ago,
both connected to a PRC-77.  and the M-80 PTT and mic worked fine, good
sidetone in the H-250.  But how will I hear incoming audio from the PRC-74
with just the M-80 mic attached?  Dumb question but I'm all jazzed waiting
for Gilbert next month (getting the '74 then) and don't want to wait to
learn more.

Oh,  one more thing these H-250s with volume controls also come with a
plug-in earbud.

Please excuse all this bandwidth.

And thank you,

Clare N2RJB

On Thu, Aug 28, 2025 at 3:39 PM Tim <timsamm at gmail.com> wrote:

> Hi Clare - The usual handset for the "Old Family" PRC-47 is the H-33 which
> has a carbon mic element.  I believe the H-189/250's that are often used
> with the New Family gear like the PRC-25/77 uses a dynamic mic element and
> therefore not directly compatible with the Old Family equipment.  And
> different connectors of course.  (U-77 versus U-229).  Also I don't think I
> have ever seen an H-250 handset with a volume control. (But I never say
> never!  haha)
> Have fun with the PRC-47.  When they work, they work great...
> Cheers, Tim
> N6CC
>
> On Thu, Aug 28, 2025 at 12:09 PM Clare Owens <clare.owens at gmail.com>
> wrote:
>
>> Hi All,
>>
>> The manual I have for the PRC-47 only shows the use of the M-80 handset.
>> Is there anything in the PRC-47 that would make the use of an H-250 a
>> problem?  I have several working Vietnam vintage radios (Prc-68A, PRC-25,
>> PRC-77) and all now have NOS "modern" H-250s with the volume control and
>> I'd like to also use one on the PRC-47 that I will be receiving soon.
>>
>> Thanks and 73,
>>
>> Clare. N2RJB
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