[MRCA] MRCA Digest, Vol 256, Issue 28 handset

Fri Aug 29 09:37:59 EDT 2025

RE: message 3, Clare, PRC-77,
Hi & Good Day from Dale-N2DM,
On my prc-77, I use the handset or if in a group setting, I use M-80
mic(dynamic, noise cancelling) with
a LS671 amplified speaker, per K4CHE, and if you wish the handset can be
connected to the LS671, at same time.
I also have used the Radio Shack amplified speaker. ( no longer available).
Good Day, Dale, N2DM, "Skinny-At-Las" Falls, NY..

On Fri, Aug 29, 2025 at 9:06 AM Mike Christie via MRCA <mrca at mailman.qth.net>
wrote:

> I having used the An/prc 47 in Marine Corps extensively the standard was
> the H33 handset which has a carbon mic element. The other handsets M80,H189
> and H250 are used with the VHF radios such PRC 25,77 and VRC radios and the
> M80 would be used as well.
> Becarefull if you try to adapt something there is bias voltage for the Mic
> element.
> Having said all that I have several working 47’s and I just found and old
> Shure hand held mic with a carbon mic element in it. I tested the element
> by clipping it to the H33 handset mic contacts and it works perfectly.
> So i need to find the U-77u (h33) connector i don’t want to hack up a
> perfectly good H33.
> Mike
> W1ZFB
>
> On Friday, August 29, 2025 at 06:01:13 AM EDT, <
> mrca-request at mailman.qth.net> wrote:
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> Today's Topics:
>
>   1. PRC-47 and M-80 (Clare Owens)
>   2. Re: PRC-47 and M-80 (Tim)
>   3. Re: PRC-47 and M-80 (Clare Owens)
>   4. Re: PRC-47 and M-80 (Anthony Clare)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 28 Aug 2025 15:08:54 -0400
> From: Clare Owens <clare.owens at gmail.com>
> To: Military Radio Collectors Association <mrca at mailman.qth.net>
> Subject: [MRCA] PRC-47 and M-80
> Message-ID:
>     <CAFdOJ7O7=Kn3VNF+HyQ+3cUrdD-=pFQy2wN4V2NnkKbDj8tafQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> 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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> Message: 2
> Date: Thu, 28 Aug 2025 12:38:29 -0700
> From: Tim <timsamm at gmail.com>
> To: Clare Owens <clare.owens at gmail.com>
> Cc: Military Radio Collectors Association <mrca at mailman.qth.net>
> Subject: Re: [MRCA] PRC-47 and M-80
> Message-ID:
>     <CAG9SHKMnMjRSFqF_agbKyQdP5b3y25UxWxSx8Pkwisf_ycbjgg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> 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
> > ______________________________________________________________
> > MRCA mailing list
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> ------------------------------
>
> Message: 3
> Date: Thu, 28 Aug 2025 16:26:52 -0400
> From: Clare Owens <clare.owens at gmail.com>
> To: Tim <timsamm at gmail.com>
> Cc: Military Radio Collectors Association <mrca at mailman.qth.net>
> Subject: Re: [MRCA] PRC-47 and M-80
> Message-ID:
>     <CAFdOJ7P2COmjzp1g+7XHzCkPnwhx-GTWbzU2YshtGmooooVnjg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> 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
> >> ______________________________________________________________
> >> MRCA mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/mrca
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:MRCA at mailman.qth.net
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >
> >
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> ------------------------------
>
> Message: 4
> Date: Fri, 29 Aug 2025 05:59:47 -0400
> From: "Anthony Clare" <n3kcb at usa.net>
> To: Clare Owens <clare.owens at gmail.com>, Tim <timsamm at gmail.com>
> Cc: Military Radio Collectors Association <mrca at mailman.qth.net>
> Subject: Re: [MRCA] PRC-47 and M-80
> Message-ID: <131dHCJ7v8928Set.1756461587 at web08.cms.usa.net>
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> End of MRCA Digest, Vol 256, Issue 28
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