[GreenKeys] Sat AM RATT fun

[John Vendely]

Looks like a typo in your original message.  The MARK frequency should 
be 7088.575 kHz.  7088.525, as shown below, will give you 900 Hz shift, 
with the center frequency offset 50 Hz low.

Your best bet for receiving would be with the receiver in "CW" mode, 
tuned to 7089 kHz, with IF BW of 1 kHz and BFO offset 2 kHz below the IF 
center freq, fast AGC.  You could, of course, set up the receiver the 
same as the transmitter--in USB mode with virtual carrier of 7087 
kHz--but this is not optimal.  The 3 kHz IF BW is too wide and makes you 
vulnerable to adjacent channel interference (of which there's plenty) 
which will "capture" your AGC and disrupt copy...

73,

John K9WT

On 2/12/2024 5:25 PM, Harold Hallikainen via GreenKeys wrote:
> I'm typically not up that early on Saturday, but I'll leave the system on
> autostart overnight and see if I see anything.
>
> My notes say:
> For 850 Hz shift, there is the Military Net on 7089 kHz center frequency,
> mark low. So 7088.525 mark, 7089.425 space. That’s 7087 USB with
> 2000+/-425 tone as per military standard. 0900 EST on Saturdays.
>
> Is that right?
>
> Thanks!
>
> Harold
> https://w6iwi.org
>
> On Sun, February 11, 2024 8:34 am, W2HX wrote:
>> Who will accept the challenge and come join us Saturday mornings?
>> https://www.youtube.com/watch?v=xtfPWj3qbRw
>> Thanks to K3TZJ for the Teletype lesson.
>>
>> 73 Eugene W2HX
>> My Youtube Channel: https://www.youtube.com/@w2hx/videos
>>
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>