[ARC5] Why is the ARC-5 Tx rack so hard to find?

[David Stinson]

----- Original Message ----- 
From: "J Mcvey" <ac2eu at yahoo.com>
To: <arc5 at ix.netcom.com>; <arc5 at mailman.qth.net>
Sent: Sunday, March 13, 2016 11:55 AM
Subject: Re: [ARC5] Why is the ARC-5 Tx rack so hard to find?


> Uh-oh I ASS-U-med that the MT 71 used the same connectors 
>as the FT-226 but may be wired differently. no?
>I also thought that the BC-451 and cable/plug config 
>might work with both the BC-456 and the MD-7.

Interchangeable Connectors 274N/ATA & ARC-5
All receiver connectors interchange.
5-pin Antenna switch.
3-pin Modulator power.
6- pin Sidetone/switching.

That's it, I'm afraid.
The two connectors between the MD-7 and the C-30 
control box are very difficult to find these days.  
Someone-
I think it was Fair Radio- had a pile of these back
in like '98 or '99 and I advised people to get them
while they could.  Sure glad I got a few because I 
haven't seen them since.

A BC-451 can be wired to work your MD-7, sorta, 
but in actual deployments the expensive-if-you-can-find-it 
C-30A was rarely used.
The set was hard-wired to Phone mode and the pilot
interfaced via a J-16 or J-22 junction box with a stick
or wheel mounted PTT switch.  This is how I built my
AN/ARC-5 set.  I did add a rotory switch to change 
modes, but it isn't required.  

GL OM DE Dave AB5S