[amsat-bb] GO32 APRS ?

[Henk, PA3GUO]

Grrrr

I seem to fail to understand the APRS mode of GO32:

Kenwood TS2000X
HamRadioDeluxe for auto doppler correction

External TNC (PK96)
hbaud 8600
u aprs via 4xtech

uplink 145.850
in CONV mode: ":AP hello"
... some days ago this worked twice, then nothing got digipeated

uplink 145.930
in CONV mode: ":2 hello"
... never any success

Then: I see JA stations getting stuff like this over it:
JA0CAW]APRS,4XTECH*,qAS,JH4BTI::JA5BLZ :GE ur599 TNXp
whereas I would have expected somethin like "AP JA5BLZ ...."
(AP in front)

This is the only source of documentation I have:
http://web.usna.navy.mil/~bruninga/GO32-ops.html

Which states:

145.85 MHz All APRS messaging (or fixed station non-Mic-E positions). . Only TOCALLs that begin with "APxxxx".
145.93 MHz All APRS Mic-E positions and status(D7, D700 and D710s with comment set to "Committed, Special or PRIORITY"...
The reason for these uplink distinctions is due to GO-32 hardware that will only digipeat a packet on 145.85 that has
a TOCALL beginning with "A". (All APRS fixed station packets and all APRS messages including D7 and D700's) . The
145.93 channel will only accept packets that begin with a digit between 1,2,3,4,5,6,7. . But fortunately the D7 and
D700's do this naturally as long as the position comment is set to "committed, SPecial or PRIORITY"...

Q1: do the TOCALLs need APxxx or Axxx on 850 ? (in CONV mode type :APxxx ?)
Q2: should here ":2xxx" work ?

Thanks !
Henk, PA3GUO

.... so lost :-)