[aprssig] TWO-WAY trackers!

Brian B. Riley brianbr at mac.com
Tue Sep 25 13:08:36 CDT 2007

Thats easy to say when you live in Europe where a long afternoon's  
drive could easily cover three or four countries  and a bunch of  
digis... but here in the US we have places where an afternoon's drive  
won't even cross one state and digis are sometimes farther apart than  
you countries are wide ... 50 watts then can be highly appropriate.  
You are focusing on the wrong evil, it's not the equipment, it's the  
operator. The TMD7x0 has three power settings (5 , 25, 50)  and they  
are the choice of the operator. Education, not prohibition is the  

cheers ... 73 de brian  riley,  n1bq , underhill center, vermont
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On Sep 22, 2007, at 1:52 PM, Arno Verhoeven (PE1ICQ) wrote:

>> I agree, transmitting without listening isn't good amateur practice.
> Well if we start talking about decency, then I think that we should  
> include output power in the discussion. I personally think that the  
> TM-D700 and TM-D710 have a too big mouth. I believe that 6 to 10W  
> is plenty for a tracker.
> I also believe that in some circumstances it is perfectly OK to use  
> a low power transmit-only tracker. After all, how many collisions  
> do you really avoid with a tracker that listens for channel occupancy?
> Sure, you will hear the digi, and nearby stations, but the digi  
> itself will most likely hear a constant stream of data from lots of  
> (distant) stations that your mobile tracker will not hear. So even  
> you listen if the channel is free, chances are that you packets  
> will still collide.
> But a big mouth TM-D7x0 with 50W will solve that problem... right?

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