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Viking II keying question

Crambone

Well-Known Member
Jan 22, 2019
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I posted a vid of the issue it’s easier than explaining




0C176CAE-90E1-4363-902D-0AC7DF68E900.jpeg
DFA4C8AD-3FA3-4D70-A052-139136064DE9.jpeg
DA7DE93C-A67E-4D56-A2AD-06E852ED105A.jpeg
073883F3-1699-44F5-9709-812D41DFB81F.jpeg
 

I'm not familiar with the push-to-talk adapter boards. I do know that the "HV" switch turns on a relay with a 120-Volt AC coil. Your PTT adapter should key that relay if you want to transmit. When we install the receiver relay in a Valiant, that switch is left in the off position. The mike turns on that relay when you key.

Leaves me with only two possible explanations. A failed component on your PTT adapter or an error of some kind in the hookup. I have more experience with the Valiant than I do with this model, but the way they both work for PTT is the same, best I recall.

73
 
I'm not familiar with the push-to-talk adapter boards. I do know that the "HV" switch turns on a relay with a 120-Volt AC coil. Your PTT adapter should key that relay if you want to transmit. When we install the receiver relay in a Valiant, that switch is left in the off position. The mike turns on that relay when you key.

Leaves me with only two possible explanations. A failed component on your PTT adapter or an error of some kind in the hookup. I have more experience with the Valiant than I do with this model, but the way they both work for PTT is the same, best I recall.

73[/QUOTE
Looking back I had to install a new Plate switch I’m wondering if I misfired or installed the wrong switch. Strange that IN Phone and switch OFF it keys with the Mike, I see all currents on the meter but get zero output from the radio? The relay on the K1 keying board clicks and works when Plate switch ON?
 

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