[ARC5] BC-230 first run
WA5CAB at cs.com
WA5CAB at cs.com
Sun Mar 27 13:11:37 EDT 2016
Glen,
These sets, like the WW-II vehicular sets, are designed to work into a
short (< <1/4 wavelength) wire or whip antenna. The radiation resistance is
low, nowhere near 50 ohms. For example, the A-58 Phantom Antenna for SCR-193
(BC-191) contains two 10 ohm resistors with switching to yield 5, 10 or 20
ohms. Not a whole lot of room for antennas on a P-39 or a P-40.
In a message dated 03/27/2016 09:34:03 AM Central Daylight Time,
arc5 at mailman.qth.net writes:
> I am not really familiar with the transmitter. However, is it designed
> to work into a 5-ohm load? That is almost a dead short where r.f. is
> concerned.
>
>
> You indicated a dummy load of 5-each 1-ohm resistors in series. I would
> try 5-each 10-ohm resistors to get the load impedance up to 50-ohms.
>
>
> Glen, K9STH Website: http://k9sth.net
>
>
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