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Author Topic: Elmac AF-67 Cable  (Read 3403 times)
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W1JHJ
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« on: March 31, 2011, 07:12:59 PM »

Got my Elmac AF-67, PMR-8 and M1070 today.  But I need an interconnecting cable.  I see that Allied and Jameco have the Jones connectors but does anyone know of a good source for the cable and what the specs are?
How was the receiver part of the cable wired?  Was the main cable to the transmitter "Y"'ed?

Thanks,
Jon
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KA0HCP
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« Reply #1 on: March 31, 2011, 08:08:06 PM »

The manuals show all the details of how to wire each plug.  Note that the transmitter has multiple options depending on what features are desired.
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New callsign KA0HCP, ex-KB4QAA.  Relocated to Kansas in April 2019.
W1JHJ
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« Reply #2 on: April 01, 2011, 01:53:26 PM »

The manuals show all the details of how to wire each plug.  Note that the transmitter has multiple options depending on what features are desired.

thanks for the reply.
I do have the manuals courtesy of BAMA.  I may even the Jones plugs kicking around.  But I was wondering who had suitable cable available and what the original cable looked like with the receiver connection.
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KA0HCP
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« Reply #3 on: April 01, 2011, 06:45:36 PM »

You will need to work out how many conductors you need.  Yes, you will need to have a Y breakout for the receiver.   With that consideration, it will probably be easier to just build it up from individual wires, then bundle it using  any of several methods including:  tieing, tie wraps, spiral wrap, loom tubing, mesh tubing, etc.
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New callsign KA0HCP, ex-KB4QAA.  Relocated to Kansas in April 2019.
kg8lb
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« Reply #4 on: April 02, 2011, 08:14:35 AM »

I have an original cable on my PS-2V power supply. I will double check but as I recall the wires are all 18ga.
Not real critical however at short lengths up to 6 feet or so. I have made up many Elmac cables without a single problem. Basically you should use 18ga min for the 110VAC runs, minimum of 20ga for the HV DC runs and control relays while 16ga min  is a good bet for LV AC filaments and the ground run.  I like to use a good, fine strand grade of wire or some nice cloth covered, old buzzard repro wires. I think Radio Daze or Antique Electronic Supply still has cloth wire and it seems one of them offered ready made, cloth covered looms of multi-conductor cable.
 I often use old fashioned cable lacing material to bind the cables .  As an alternative, automotive convoluted split loom from the auto parts may be pressed into service as well. It looks a bit modern but works well.
  Please, resist soldering to the plug pins. If you canot locate a 15 pin Jones socket let me mnow, I may have one.

  You can usually find lacing material as well as the Jones plugs on eBay.
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W1JHJ
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« Reply #5 on: April 03, 2011, 02:27:58 PM »

Thanks, Gary. 
I have a friend looking in his junk box for the Jones socket and he was going to look at flea today too. 
I found that the transmitter and receiver both have some issues that need to be addressed before I put any power to them.  So I'm not in a rush.  If I get stuck, I'll let you know.
Thanks again.
Jon
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kg8lb
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« Reply #6 on: April 03, 2011, 08:03:23 PM »

The contacts on the XTAL/VFO switch (inside the can) are prime suspects when grid drive is absent. The driver XFMR often goes open, killing the audio and giving rise to excessive modulator current . The bandswitch contacts are another "point" of attention. All that said they are actually pretty reliable old boxes.

  8 conductor, old buzzard, cloth type cable here:
http://www.radiodaze.com/wire-multiconductor.htm
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