[aprssig] HF APRS Transceiver

[Ray Wells]

To be pedantic, CW is a NO tone tx. The tone is generated in thr rx by 
the BFO. Guess the Beat Frequency Oscillator doesn't get much thought 
these days.

Ray vk2tv


Geri.Norris wrote:

> Howdy;
> CW is a continuous wave and for APRS you will need a modulated signal 
> for the packet data (ones and zeroes) to travel on.
> CW is a single tone transmitter instead of several tones (voice 
> modulated) if you want to look at it this way.
> Geri N5RIG
>  
>
> Eric H Christensen wrote:
>
>> I've been trying to find the answer to this question for a few days 
>> but you can't find good electronics answers anymore.  I'm hoping that 
>> there will be someone on here that has more/better electronics 
>> experience than I.
>>
>> MFJ makes a "cheap" CW-only HF transceiver that is for single bands 
>> but does allow a small amount of tuning within that band.  What extra 
>> circuitry is needed to connect something like an OpenTracker+ to this 
>> type of transmitter so it will transmit 300 baud packet?
>>
>> 73,
>> Eric W4OTN
>>
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