[GreenKeys] Proposed Autostart Net Frequencies

[Gary Chatters]

On Mon, 3 May 2004, Bob Camp wrote:

> Hi
>
> Just to pick nits .....
>
> 10.133000 MHz = the mark frequency
> 10.133000 MHz - 170 Hz = 10.132830 MHz = the space frequency
>
> assuming that's right then:
>
> "center frequency" =  10.132915 MHz for those using marine FSK radios
>
> If I'm running a SSB radio on USB *and* the radio is set up for carrier
> frequency readout you tune to:
>
> 	10.130705 MHz for a 2125 / 2295 TU
>
> 	10.131555 MHz for a 1275 / 1445 TU
>


For the usual amateur practice the tuning would be:

Transmit mark frequency:  10.133000 MHz
Transmit space frequency: 10.133000 MHz - 170 Hz = 10.132830 MHz

TU input audio mark frequency:  2125 Hz
TU input audio space frequency: 2295 Hz

Receiver mode: LSB

Receiver indicated frequency: 10.13300 MHz + 2125 Hz = 10.135125 MHz


Or use the tuning listed in the quoted email and set the normal/reverse
switch to reverse if you prefer.  As long as we keep the transmitted
frequencies right, it doesn't matter if the user prefers the conventional
tones or inverts them.


Gary