[ARC5] VHF Guard (121.5 MHz), and Other Guard Channels

[Mike Morrow]

Jeep wrote:

> Most of what you all have been saying, I believe is correct.  I'll 
> confirm that the URC-4 and URC-11 both worked on VHF and UHF Guard 
> (Emergency).

The AN/URC-4 is 121.5 or 243.0 MHz, depending on the position of the
                                    band switch on the right side.
                                    The dipole antenna has to be
                                    configured for the band in use
                                    as well.
The AN/URC-11* is 243.0 MHz only.
The AN/URC-14* is 121.5 MHz only.

The RT-159*/URC-4 uses 8 vacuum tubes.
The RT-285/URC-11 and RT-350/URC-14 use 6 vacuum tubes.
The RT-285A/URC-11 and the RT-350A/URC-14 use 5 vacuum tubes and 2 transistors.

Mike / KK5F