More power Egon!!!

HO-68 v AO-51 ??.

From: John Hackett wrote at EU-AMSAT mail list
To: eu-amsat@yahoogroups.com
Sent: Sun, Apr 25, 2010 3:50 pm
Subject: [eu-amsat] HO-68 versus AO-51
HO-68 v AO-51 ??.
HO-68 versus AO-51 - and the university downlink only satellites - (aka the FM
menagerie).In my honest opinion it's a 'no contest' scenario - with HO-68 winning hands down.
The two main reasons for me making this claim are ...
1) HO-68's superior orbit.
2) It's multi-mode transponders.
On a typical European pass an HO-68 orbit has a footprint the covers from Spain
in the west to India in the east, Norway in the north to Sudan in the south ...
and all points in between.
Whereas AO-51 is FM only ... HO-68 has transponders for CW, SSB as well as FM.
HO-68 is (IMHO) easier to operate due to it needing less power to get into the
transponders, albeit, to really take advantage of that, a knowledge of CW is
required, which *STILL* shows it's great advantage as weak signal mode.
When all else fails ... switch to CW.
Igor, RW3XL has been operating cross-satellite with HO-68 to VO-52 and HO-68 to
AO-7 ... keying the up down buttons for CW since his keyer is on the blink.
For those wanting to learn, the 200mW beacon sends *SLOW* morse and it's
copyable on a piece of wet string wrapped round a rusty six inch nail.
I've proved this over and over on HO-68 at the beginning of passes when the
elevation is under 20 degrees and a SSB just can't make it - switch to CW - Q5
copy - (Domenico, I8CVS will endorse that).
I believe that HO-68 is becoming the experienced 'operator's' satellite while
AO-51 will remain the platform for the potential newcomer ... where they can
QRM eachother to their heart's content ... more power Egon ... MORE POWER !!!
... (with due apologies to the Hollywood film 'Frankenstein').
For me at least, HO-68 has brought the fun back into amateur satellite
operating, particularly on CW ... akin to RS-10, the most popular satellite
ever - (judged by the amount of users) - after the veritable old AO-7.
While everyone is entitled to his or her opinion, operating FM on a satellite
is about as much fun for me as watching paint dry and is, in my opinion, the
worst possible way to introduce a potential newcomer to amateur satellites. My
EU-Amsat co-founder, SV1BSX
(SK) first used the word 'zoo' to describe the AO-51 standard of operating.
There ought to be a sign on the microphone ... PLEASE DON'T FEED THE ANIMALS.

73 John.

Received Arecibo on 432 MHz, Earth-Moon-Earth

I succeded to copy Arecibo EME transmmition using my satellite antenna
It was very strong and clear in CW ,and with nosie level in USB mode.



Earth-Moon-Earth transmissions from the Arecibo Observatory ,The world largest radio telescope By KP4AO

SSTV via HO-68

In the next HO-68 schedule 11-18 April 3 passes preserve for SSTV mode on FM transponder!
This is a good chance to encouraging swl and scanner fans to receive some sstv pictures.
may this recruit more young people to satellite.

I’ve tested my setup on SO-50 21:10 UTC with a fair result , but not like HO-68

I8CVS Antennas

Thanks OM Domenico .

XW-1 Mode rest time!

It’s was clear from several observations the Mode rest point fall anywhere in the last beacon loop!
(No -WAIT- order dominated over -DO- order ).

BJ1SA XW XW AAA TTT AAN TBE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN TBE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN ATT ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN A4T ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN TNE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN T6T ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN T6T ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN A4T ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AAN TBT ETT TTT TTT TTT * (here was the mode change point)
BJ1SA XW XW TTT TTA AUT TTT ETT UET AN6 VU6 E4T UVD ETT TTT TTT XW XW
BJ1SA XW XW TTT TTA AUT TTT ETT U4D AN6 EDT EET U4T ETT TTT TTT XW XW
BJ1SA XW XW TTT TTA AUT TTT ETT U46 UND 6E6 EET U4T ETT TTT TTT XW XW
BJ1SA XW XW TTT TTA AUT TTT ETT U4D VT4 6DT E6T U4T ETT TTT TTT XW XW
BJ1SA XW XW TTT TTA AUT TTT ETT U4D VAT 6UT EET U4T ETT TTT TTT XW XW
BJ1SA XW XW TTT TTA AUT TTT ETT U4D VAU BET E6T V4U ETT TTT TTT XW XW

Warm feeling of friendship via Satellite

Every time I had a rag chewing QSO with Mr.Dome I8CVS on satellite I feel the great meaning of radio friendship . For sure many of us use the stamp style QSO 59/Grid/73 on FM sat .On liner transponder we have more space and time.Thanks OM Dominico for the nice lovely QSOs.

Image by PRISM satellite

Intelligent Space Systems Laboratory University OF Tokyo
Tnx DK3WN ,JE9PEL 4 Info and Photo.

WiSP Upload Logging to HO-68(XW-1/Hope-1) Satellite

WiSP upload logging



WiSP is a multi program package used to access the Pacsat
Satellites. There are Seven programs in the package that
work together to perform a complete groundstation function.

Count number of HO-68 TLM frames/Pass

Hope-1 (HO-68) sends CW TLM every 10 seconds
the sequence takes 40 seconds
Number of TLM Frames per pass = Total Pass time (AOS to LOS) in seconds/50

HO-68 OFF/ON TLM

4 Messages Uploaded to HO-68 BBS

18:45 UTC.
Orbit #1,429.
4 Messages Uploaded to HO-68 BBS.
Very quite pass , No QRM.

HO-68 BBS Packet time interval

HO-68 sends the OPEN BBS packet announcement frame
on a regular and constant time interval every 12 seconds .