If it has 2 or 3 terminals (#3=gnd.), it is 200 ohms. If it has an original
coax connector it is 50 ohms. See EIA receiver standards for 1958.

--
Crazy George
Remove N O and S P A M imbedded in return address
"Edgar" wrote in message
...
Hello,
I've purchased an 1962 tube HF receiver. Well the problem is I don't know
exact antenna input impendence value of it. I use simple 40m. dipole on a
regular TV cable of 75 ohm. I would like to do some experiments with
random
wire, and 50 Ohm coax or 300 Ohm ladder line for dipole. Is there any
circuit that can help me to mach the impendence?

Thx,
Edgar
73!