[MRCA] [Milsurplus] [MRCG] WTB - Vintage Mil Aircraft Radio Components

Mon Oct 1 12:55:04 EDT 2018

Hi Francesco - The 618T (as the AN/ARC-94) was also installed on the PTF
boats operating in Vietnam as a replacement for the TCS on the very early
Nasty class PT boats.  We still had the ARC-94 (and ARC-27 and VRC-46) on
those boats in post-war training work to support future NATO ops in
northern Europe.  A pic of the PTF radio room with those sets here:
http://www.n6cc.com/trumpy_ptf17

The ARC-94 worked well and was reliable, the ARC-27, not so much - they
beat the shock mounts to death regularly...We did not have an organic
repair capability in the unit but we had the P-3 unit at NAS Glenview
repair them for us as necessary..

We also had two URC-32's in our shore based comm center, very reliable.

Tim
N6CC

On Mon, Oct 1, 2018 at 9:01 AM Francesco Ledda <frledda at att.net> wrote:

> The ARC-58 pumped 900W PEP and was one its positives respect to the 618T.
> The ARC-58 reached about 1000h MTBF at its mid-life.  The challenges with
> the ARC-58 were the human side; this radio required very good techs for
> repair and alignment; the frequency synthesizer system could not suffer
> fools.
>
> Call it ARC-58, TSC-15 or TRC-75 or URC-32, the ARC-58 family penetrated
> the
> Air Force, Marines and Army. Therefore, DoD had a pretty good investment
> with this Collins system.
>
> In a time of urgent budget challenges, DoD decided to put the 618T family
> mostly on new aircraft and keep the ARC-58 going to end of life. The 618T
> family found its way to lots of aircraft such as OV-1, Huey, Phantoms, Navy
> boats (SRC-23), ground and more.   Of course, there were cases of 618T
> upgrades.
>
> In the B-52, the ARC-58 was replaced by the ARC-190 and the 618T was mostly
> skipped.  The TSC-15 was retired from the Air Force in 1982 and replaced by
> HF-80 based TSC-60.  This tells me that the ARC-58 family was good enough
> to
> let it go to end of life. The introduction of the ARC-190 was not painless;
> the first batches suffered from a semiconductor problem that took a while
> to
> understand and resolve.  Once this was solved, the ARC-190 was one of the
> best radios in the service.
>
> Lots of upgrades were done to the 618T family; I have a 618T translator
> that
> was upgraded with URG II technology; for those not familiar with Collins
> URG
> II, think 651S-1.
>
> Best, Francesco K5URG
>
>
> -----Original Message-----
> From: milsurplus-bounces at mailman.qth.net
> [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Ray Fantini
> Sent: Monday, October 1, 2018 7:45 AM
> To: Scott Johnson; 'West Coast Military Radio Collectors Group'; 'mrca';
> 'milsurplus'
> Subject: Re: [Milsurplus] [MRCG] [MRCA] WTB - Vintage Mil Aircraft Radio
> Components
>
> Still beings up the question what would you be using it for. I thought most
> KC-135 had been refitted with 618T transceivers as soon as they became
> available being the ARC-58 was hardly the most reliable radio. The MTBF of
> the ARC-58 was around 400 hours and the MTBF of the 618T was 4,000 hours.
> But imagine that if you had a large aircraft that came with an ARC-58 only
> an ARC-58 will do.
> Going to assume that this is just for static display or Ham use being that
> none of this stuff would meet type acceptance these days.
>
> Sorry for all the questions but this is a fascinating subject.
>
> And if you decide that a 618T/ARC-94 would work may be able to help.
>
>
>
> -----Original Message-----
> From: Scott Johnson [mailto:scottjohnson1 at cox.net]
> Sent: Friday, September 28, 2018 9:45 PM
> To: 'West Coast Military Radio Collectors Group' <mrcg at mailman.qth.net>;
> Ray
> Fantini <RAFANTINI at salisbury.edu>; 'mrca' <mrca at mailman.qth.net>;
> 'milsurplus' <milsurplus at mailman.qth.net>
> Subject: RE: [MRCG] [MRCA] WTB - Vintage Mil Aircraft Radio Components
>
> -And the civil version, the 18Z3/4 was used in the early 747
>
> Scott V. Johnson W7SVJ
> 5111 E. Sharon Dr.
> Scottsdale, AZ 85254-3636
> H (602) 953-5779
> C (480) 550-2358
> scottjohnson1 at cox.net
> scott.johnson at ieee.org
>
> -----Original Message-----
> From: mrcg-bounces at mailman.qth.net <mrcg-bounces at mailman.qth.net> On
> Behalf
> Of Scott Johnson
> Sent: Friday, September 28, 2018 6:38 PM
> To: 'Ray Fantini' <RAFANTINI at salisbury.edu>; 'MRCG' <mrcg at mailman.qth.net
> >;
> 'mrca' <mrca at mailman.qth.net>; 'milsurplus' <milsurplus at mailman.qth.net>
> Subject: Re: [MRCG] [MRCA] WTB - Vintage Mil Aircraft Radio Components
>
> They were also used on the KC-135.
>
> Scott V. Johnson W7SVJ
> 5111 E. Sharon Dr.
> Scottsdale, AZ 85254-3636
> H (602) 953-5779
> C (480) 550-2358
> scottjohnson1 at cox.net
> scott.johnson at ieee.org
>
> -----Original Message-----
> From: mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> On
> Behalf
> Of Ray Fantini
> Sent: Friday, September 28, 2018 10:07 AM
> To: MRCG <mrcg at mailman.qth.net>; mrca <mrca at mailman.qth.net>; milsurplus
> <milsurplus at mailman.qth.net>
> Subject: Re: [MRCA] WTB - Vintage Mil Aircraft Radio Components
>
> Just curious, what are you restoring that's big enough to accommodate an
> AN/ARC-58? I thought they were only used on the B-52
>
> Ray F/KA3EKH
>
> -----Original Message-----
> From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net]
> On
> Behalf Of boatanchor at martasystems.com
> Sent: Friday, September 28, 2018 12:54 PM
> To: MRCG <mrcg at mailman.qth.net>; mrca <mrca at mailman.qth.net>; milsurplus
> <milsurplus at mailman.qth.net>; arc5 at mailman.qth.net
> Subject: [MRCA] WTB - Vintage Mil Aircraft Radio Components
>
> All -
>
> I'm working on the restoration of several aircraft and need the following
> components. If you can help, please tell me what you have and how much $$
> you require for it.
>
> Thanks !
> John WB6AZP
>
>
> -- Big Black Avionics Boxes --
>
> UHF Transmitter/Receiver "RT-178 / ARC-27"
> Transmitter "T-605 / ARC-58"
> Receiver/Exciter "R-761 / ARC-58"
> Receiver  "R-540 / ARN-14C"
> Receiver "R-322 / ARN-18"
> Dynamotor "DY-66 / ARN-14"
> Vertical Gyro "332D-6"
> Antenna Coupler "C-1940 / ARC-58"
> Antenna Coupler "CU-523 / ARC-58"
> HF Power Supply "416W-1"
> Altimeter Indicator "I-152C"
>
>
> -- Mounting Trays --
>
> ARC-73 Tray "MT-2699"
> Shockmount for HF Power Supply "350T-1"
> Mount for AN/APS13 "MT-149"
> Mounting Plate "MT-80 / ARC-5"
> Mounting Plate "MT-78 / ARC-5"
> Mounting Plate "MT-109 / APX-1"
>
>
> -- Control Boxes --
>
> UHF Control "C-1904 / ARC-27"
> TACAN Control "C-1763 / ARN-21A"
> Receiver Control "C-1939 / ARC-58"
> ARC-5 Control "C-38 / ARC-5" - can be rough, just need the backing plate
> Control "C-54 / APX-1"
>
>
>
> -- Instruments & Other --
>
> Jack Box "J-22A / ARC-5"
> Frequency Meter "AW59"
> Navigator's Radar Scope Shield "801410"
> Visor for Altitude Indicator "M387"
>
>
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