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As I go deeper into jnos operation, I am now beginning to look in detail at signals on vhf radio.<BR>
Not by any means the best, but I find "Baudline" fairly useful for that purpose.<BR>
<BR>
What I see makes me the "bad guy" of the neighborhood.<BR>
I believe I see my station colliding with on-going traffic in situations that "should be" avoidable.<BR>
I hope this group can shed some light on remedial action I can take.<BR>
<BR>
As an example tonight:<BR>
MKG and GKF, GKF-15 and MSE-7, are two links engaged in exchanging AX.25 packets (no IP encap).<BR>
The frames are long, packing up to 4 (maybe more) packets, one frame measures longer than 13 seconds at 1200B.<BR>
The excanges are going on for over a minute with 1 second dead air times (maybe 250ms minimum) <BR>
then my station "chimes in"...<BR>
I see my station both broadcast and NET/ROM node share on top of a GKF-15 _> MSE-7 frame after two packets but clobbering the tail-end of the frame with two one-second frames. I do not know when jnos dispatched the packets/frame, I do see the audio sent to the Kantronics 9612 TNC and the jnos trace received by jnos. Because of the tight match of audio to trace I suspect there is no delay after dispatch before transmit.<BR>
<BR>
One potential flaw in my analysis comes from recording at my own transciever - I'd be 100% certain at a remote location hearing all 5 sta.<BR>
However I'm pretty certain my view is accurate even with the limitation.<BR>
<BR>
So - in seeing the above, I'm pretty certain my TNC is failing to detect "channel not busy" prior to activating the T/R switch.<BR>
<BR>
My questions to this group becomes: <BR>
Is it TNC (in KISS mode) responsibility to avoid transmitting over on-going traffic? <BR>
It certainly can not be jnos without "carrier detect" signal on RS-232.<BR>
I hope it is tuneable and I have made a configuration mistake - or must I toss out and replace the TNC?<BR>
<BR>
I want to treat the RF space fairly - I suspect I'm not doing a good job of it.<BR>
Right?<BR>
<BR>
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73<BR>
de Skip k8rra k<BR>
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