Hi Bill,
Yes, "Digital Transponder" means packet function.
Strictly it is not a digital mode transponder on HO-68. It is data store-forward transfer over analog FM RF channel. the link layer protocol based on the AX.25, and applications layer protocol used PACSAT.
73 Alan Kung, BA1DU
----- Original Message ----- From: "Bill Dzurilla" billdz.geo@yahoo.com To: amsat-bb@amsat.org Sent: Saturday, March 13, 2010 3:29 AM Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 5, Issue 117
Alan,
Thank you very much for your great work with HO-68 and for your effort to solve the voice/packet problem.
I do not entirely follow the schedule, however. Does "Digital Transponder" mean packet? Where it says:
14 Mar. 2010, Digital Transponder
16:45...Turn On--Linear Transponder India, Africa, Middle East, Europe,NA 17:30...Turn Off
does that mean digital (packet) or linear (SSB)? Does it mean that the linear transponder will be active on 14 March and 15 March and that the rest of thw week is digital only?
Please clarify if possible.
73, Bill NZ5N
Message: 14 Date: Sat, 13 Mar 2010 00:07:41 +0800 From: "Alan Kung" alankung@public3.bta.net.cn Subject: [amsat-bb] HO-68 Schedule - 14-21 Mar 2010 To: amsat-bb@amsat.org Message-ID: 009201cac1fe$35fc6db0$6c01a8c0@ba1duoffice Content-Type: text/plain; charset="gb2312"
Hello all,
I got a lot of responses about problem of digital mode through HO-68. The main problem is that Packet communication is often interrupted by voice. We are trying a new schedule
in this week, voice and packet operations will be separated
by the schedule, of course, this just depends on the hams'own discipline. If you have any comment and suggestion, please
let me know.
14 Mar. 2010, Digital Transponder