[amsat-bb] Re: PSK on PCSAT2

[G0MRF@xxxxxxx]

Hi all.

An interesting pass of the PCSAT2 this evening.

Heard 3 transmissions at the same time on the 435 FM downlink. - So Bob's
multiuser concept appears to work in practice as well as theory. - Thanks
Bob.

Received signals from

G3PLX ON7EQ and my own signal G0MRF

I received 569 from G3PLX and sent 579.

Peter is obviously using a very good method of doppler tracking. His signal
appears at 1000Hz and stays there for the full pass. He runs full duplex and
listens for replies at 900Hz.

Copy / pasted from the Digipan receive window:

CQ CQ CQ de G3PLX G3PLX G3PLX
qsSN7EQ
CQ G3LXP de ON7E
Q G3LXP de  Oa e tu a aea
Ÿ   wN7EQ
CQ G3LXP de ONw lQ
CEoGILatqò  ON7EQ
CQ G3LXP de ON7EQ
CQ G3LXP de ON7EQ
CQ G3P de ‘
7uQn
CQ  GILXP de ON7EQ
2Q G3L
»elt
FuEoÓma  te
haVa ar ee  i       =e e   eee  * tt d   i     ee  e  u t  c
etl
eeMi  n roene  sA   et tee o x 100Hz down  aEplex KK
CQ CQ CQ de ot3PLX G3PLX G3PLX
qsx 100Cz down duplex KK
CQ CQ  CQ de G3  X G3PLX G3PLX
qsx 100Hz down auoteex KK
CQ
G0MRLde  G3PLX 569
G0MRF de G3PLX 569
G0MRF de G3PLX 569
G0MRF de G3PLX  569
G0MRF de G3PLX 569
G0MRF de G3PLX 569
G0MRF de G3PLX 569

end....

Equipment here:
TX:  IC756 on 29.402 USB with 700Hz PSK.   PWR 75W  to  dipole  Digipan on PC

RX:  IC706 on 435.275  9 Ele beam fixed at 30 deg  elevation. Masthead
ATF54143 pre-amp (design from Journal  July-Aug/2005)
Digipan on laptop

This is not easy....but it can be done.

73

David  G0MRF
----
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