[ARC5] Help! Looking for info to build a home-brew T-R control box.

[Leslie Smith]

G'day all,

I wish to set up a T-R control system for a single ARA (or SCR-274-N)
receiver and transmitter.  (I have racks for these.)  I have most of the
components - although only the transmitter & receiver are from BC-nnn. 
My PSU, modulator and T-R logic are home-brew.

 I have the (easily found) manual AN 16-30 ARC5-2 (in pdf form).
 In that manual section VIII contains drawing of individual components,
 and  interconnection.
 For example, Fig 8-5 shows the transmitter schematic and external
 wiring (incl the connection to the modulator component).

 In the same manual Fig 8-70 shows how to connect a single transmitter &
  receiver to the ARC-5 test rig.

 On page 153/54 I see a drawing showing wiring for rack MT-65, and I
 suspect this is CLOSE to the wiring for the FT-266-A (but only the
 MT-65 shows triple receivers, not one!)  

AND SO ON.  THAT's WHAT I HAVE.

  However, these drawing apply to the ARC-5 components, NOT the
  SCR-274-N/ATA/ARA  components.

 I have wiring diagrams for the BC-234-A single tx rack.  I have a rack.
 I figured the orientation of the 12 way connector and the function of
 each pin in that connector.  As I write, I do NOT 
have a connector, but I am certain I can buy 4mm brass tube and drill a
2.50 hole up the center and (with care) can 
make a connector to fit the pins on the rack.    (Yes, I understand
there is +600V on these pins!)

 I have found I can buy SOME connectors on eBay, but probably not the
 larger  12 way connector I mention above. 


Anyway, I'm certain others (many others) have sketched a home-brew tx-rx
control system for a working "command" rig.  I WISH TO AVOID SOLDERING
WIRES TO PINS ON RACKS ETC.  

                   o-o-o NOW TO MY REQUEST  o-o-o

Can anyone here EITHER

  (1) Point me to a sketch of a working control system for a command
  tx-rx pair.
      Remember I have NO cables, only racks.

                            OR

  (2) Advise the difference between the ATA/ARA/SCR sets and the ARC-5
  manual.

ALSO
  I have a card I built (PC card) with T-R logic that switches power and
  aerial between a receiver (any receiver) and a transmitter (any
  transmitter), but  for low voltage only.   With a little extra work
  (and a few relays) I could  adapt this (quite useful) card to work
  with the command components I  already have.

FINALLY:
  If this info does NOT EXIST in any single place it's time it did.  
  I would like to   collate and post this info in some public place. 
  I suggest this info should go into "files" at the YAHOO ARC5-Radio
  group.

Thank you for your interest.

Les Smith