[ARC5] Latest aquistion

[Bart Lee]

Mark, thanks for the additional info.  It will be useful at the museum

73 de Bart, K6VK ##
-- --
Bart Lee

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 4:12 PM MARK DORNEY via ARC5 <arc5 at mailman.qth.net>
wrote:

> The TBM/TBF Avenger typically didn’t have an ARC-5 Command set installed,
> even post war. Typical was the ART-13 transmitter, ARB Receiver, ARC-1
> transmitter, and the ARR-2 Receiver a long with whatever IFF and Radar gear
> the aircraft may also have had. There would not have been an MT-65 in the
> aircraft in that configuration. The single MT-7/ARR-2 rack would have been
> typical. Fighter radios did sometimes carry a three receiver set up but a
> three receiver ARC-5 command set would have been very atypical.  The beauty
> of the ARC-5 sets were that they were somewhat modular in design - one and
> two radio rack set ups were relatively easy to add and replace, and did not
> require 3 receivers to be taken out of service to replace 1 damaged radio
> rack.
>
> 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 19, 2023, at 6:48 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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