[OZAPRS] 80m on thursday night

[G T & C A Beagley]

My tones are 2100/2300 on an AEA DSP2232.
According to www.aprs.net, on 10mhz the mark freq is 10.149.2 giving 
dial freq of 10.151.5 LSB.
Things would be much easier of course if the standard APRS frequencies 
were not so darned close to band edges and were clear of interfering 
stuff like Fax.

Graham

ZL1GTB

Hamish Moffatt wrote:
> On Sat, Oct 02, 2004 at 09:17:57PM +1200, G T & C A Beagley wrote:
> 
>>Scott
>>
>>You can actually Tx legally on the higher frequency.
>>Only the dial readout indicates you are out of the novice limits.
>>Because of the transmitted tone pair frequencies and using LSB your 
>>signals will actually be inside the novice band (subtract the two 
>>frequencies from the dial indication and you will see where your TX 
>>tones are located). The dial only indicates the carrier frequency and as

> 
> 
> What tone frequency are you using?
> 
> 
>>vk7hse at southcom.com.au wrote:
>>
>>> Problem being is that I can't TX on the higher frequency (3.626.910
lsb) 
>>>as this puts me out of band! (Novice's cut off at 3.625 MHz) Hmm might 
>>
> 
> Both your tones would have to be well over 1900 Hz. Remember that the
> tones have sidebands due to the frequency shifting of at least the baud
> rate (300 Hz), possibly more. So a 2000 Hz tone requires a band from
> 1850 to 2150 Hz, all of which has to be inside the legal limits.
> 
> Hamish


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