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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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13th Apr 2019, 1:17 pm | #1 |
Tetrode
Join Date: Apr 2018
Location: Barcelona, Spain.
Posts: 62
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Hallicrafters Skyfone CA-2 Air radio
I have found this aeronautical transceiver with some missing parts and problems. The radio cord is misplaced, no vibrator, and a connector missing.
I think I will try to build a solid state vibrator. I don't know if this is the type of radio that has the 12V on the ground. By its on/off switch that is what it seems It is the asynchronous type with 6 pins. Also I am having some questions about the power wiring. There are 6 wires coming from this circular waffle... here it is the schematic. I have located pin 2 by its connection to the 75ohm resistor but the rest are difficut to me. http://www.nostalgiaair.org/Resource...=\M0008838.pdf What do you think guys?
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EA3IAV |
13th Apr 2019, 5:42 pm | #2 |
Heptode
Join Date: Jun 2012
Location: Southeast Norfolk, UK.
Posts: 772
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Re: Hallicrafters Skyfone CA-2 Air radio
Hi OM,
I have downloaded the Riders schematic and I think that the +12 goes to the centre pin 6 and the ground to pin 1. Pin 2 is microphone AF, pin 3 is the PTT line, pin 4 external loudspeaker, pin 5 headphone output. Here in the UK the WS-19 group produce a range of different solid-state vibrators, https://www.royalsignals.org.uk/vibs/ If you contact them it would be a good idea to send them a copy of the schematic. They supply kits or ready-built vibrators. 73 Roger/G3VKM |
13th Apr 2019, 6:18 pm | #3 | |
Tetrode
Join Date: Apr 2018
Location: Barcelona, Spain.
Posts: 62
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Re: Hallicrafters Skyfone CA-2 Air radio
Quote:
Thank you for the Solid state advice
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EA3IAV |
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13th Apr 2019, 8:52 pm | #4 |
Heptode
Join Date: Jun 2012
Location: Southeast Norfolk, UK.
Posts: 772
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Re: Hallicrafters Skyfone CA-2 Air radio
Yes, I see the problem. Even if you could find the correct plug and socket you would still need to know the identification of the wires. I think you need a wiring diagram but I guess that is hard to find.
The Riders Notes show the plug as part number 6A282 and the socket as 10A241, these will be Hallicrafters numbers and probably not helpful. Do you have the notes? I have them on PDF and the size is 330kB so easy to send. 73 Roger/G3VKM |