[ARC5] Latest aquistion

[Bart Lee]

Mike,

Thanks for the detail. With your permission we'll put up an interpretive
card with much of your text at the CHRS museum about these and
related receivers.

73 de Bart, K6VK ##
-- --
Bart Lee, K6VK, CHRS Archivist and Fellow, AWA Fellow, ARRL Liaison

Texts only to: 415 902 7168

www.bartlee.com

{Bart(dot)Lee(dot)K6VK(at)gmail(dot)com}
<http://www.lawforhams.com/>



On Wed, Apr 19, 2023 at 3:48 PM Mike Morrow <kk5f at earthlink.net> wrote:

> Unfortunately, that's a configuration that was not at all useful in
> military service.  The three receivers in a MT-65/ARC-5 in a single-seat
> carrier-based aircraft would typically have been:
>
>
>
> 1. R-4*/ARR-2 VHF ZB-Homing, 6 Selectable MF Modulation Channels
>
> 2. R-25, R-26, or R-27/ARC-5, MF/HF Lock-Tuned Fixed Frequency
>
> 3. R-28/ARC-5 VHF 4-Channel Crystal Control
>
>
>
> C-38*/ARC-5 is the receiver control box for ALL of the above receivers
> except for VHF channel selection which is performed on transmitter control
> box C-30A/ARC-5.
>
>
>
> These three receivers provided VHF Homing with six MF modulation channels,
> one-channel of MF/HF reception, and four channels of VHF reception.  That's
> much more capability from three receivers than available from the earlier
> ARA/ATA and SCR-274-N three-receiver sets.
>
>
>
> The R-23*/ARC-5 served no purpose on carrier-based aircraft.  In addition
> to aviation beacon band reception (not especially useful for aircraft
> operating from a carrier), it was designed with the MX-19/ARC-5 audio
> adapter panel to be the localizer receiver for the AN/ARN-9 Air-Track ILS
> system for land-based patrol aircraft.  Air Track ILS was abandoned before
> 1944 in favor of the far superior USAAF SCS-51 ILS (RC-103-A localizer,
> AN/ARN-5* glide slope).
>
>
>
> The R-24/ARC-5 had really only one function for use with the AN/ARR-1 VHF
> Homing Adapter.  The more capable and compact AN/ARR-2 ZB Homing Receiver
> made the R-24 and the AN/ARR-1 obsolete.  It is doubtful that earlier
> homing combo was ever deployed.
>
>
>
> Mike / KK5F
>
>
>
> -----Original Message-----
> From: MARK DORNEY <mkdorney at aol.com>
> Sent: Apr 18, 2023 5:53 PM
> To: Bart Lee <bart.lee.k6vk at gmail.com>
> Cc: ARC-5 List <arc5 at mailman.qth.net>
> Subject: Re: [ARC5] Latest aquistion
>
>
> 3 different Navigational Receivers in a 3 Receiver rack ? Interesting.
>
> Mark D.
> WW2RDO
>
> “In matters of style, float with the current. In matters of Principle,
> stand like a rock. “.   -   Thomas Jefferson
>
> Sent from my iPhone
>
> On Apr 18, 2023, at 6:48 PM, Bart Lee <bart.lee.k6vk at gmail.com> wrote:
>
> i David,
>
> If Mark does not ask for the ARR-2 manual, we'd love to have it at the
> museum at the California Historical Radio Society (Alameda -- CHRS). We
> have an R-4A/ ARR-2 (see attached), and we'd like to have at least a copy
> of the manual.
>
> 73 de Bart, K6VK ##
>
>
>
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