LOVELY!!! To hear ths morning the good old sound of AO-10/13/40 PSK telemetry.
Unfortunately i donated my PSK equipment some years ago to a friend...
Also the CW beacon on 489.550 is nice to hear.
THANKS TO THE TEAM DOWN THERE IN DOHA
DK2ZF (qrv since AO-6 in 1972)
activity 13.Feb. 16:00 UTC 1.40m dish LNB Kuhne SDR
Also kaufe ich mir eine große Schüssel. Kommt günstiger als große PA
Ja, genau so macht man es - preiswerter
DK2ZF
Hi grandfather Zlatko from grandfather Rolf, yes it was a pleasure to work you from your balcony yesterday at 17:04 UTC. Here a better operating posn. INSIDE and ant outside... Your signal fine so nothing to complain. We will have a lot of fun with the new bird, No. 100 73 Rolf
Display MoreHello all,I am very happy...it works!!!!!
Here all is ANALOG made from spare parts from junkboxes ....hi
My self made setup:
RX :
-SSB el. XRM-1 converter (neosid 5061 bypassed)-converter 265MHz to 431MHz (osc. is TTL brick 41.5Mhz x 4=166MHz)......HM preamp.made from one sat.LNB+1m dish
TX:
-DD9DU HM transverter+144 to 224MHz simple TX converter +PA abt 20W in 43el.DC3XY yagi hor....and about 10m Aircom+ cable.Some first QSOs I made with yagi in left hand on balcony,temp -3deg!
Signals was very strong,some overdrived,but nobody is ideal (me to....hi)!
Thanks very much and see you soon
old grandfather Zlatko-JN95GM
Feb.12th between 15:32 and 19:51 some 20 qsos, 3 in CW. Lowest pwr DL4SAC with 200mW to a 40 turn helix.
There was at 17:56 F5JWF with excessive pwr, blocking and desensing the whole transponder passband. After friendly requests to him to reduce pwr by 20 dB he decides : i go QRT now
All other stns excellent, OE4WOG had problems with the downlink.
Here FT-847 fully DUPLEX with 145 to 2400 and RX Kuhne LNB to 1123 MHz divider port 1 to SDR port 2 to a converter for 430 MHz. Operating full duplex and in parallel watching my SDR.
TX dish 60cm G3RUH patchfeed, RX 1.40m dish.
Suppose that 10W at dish is quite sufficient-
for Ascension 80cm should be ok.
DK2ZF Feb. 13th 09:47
Wednesday, 02:55 UTC
passband is empty... so time for an overall view from DK2ZF.
Here operation started at 15:32 hrd and wrkd: M0EYT, PA3FYM, PE1ITR, DK2DB, DC1NN, IK8XLD, IW1DTU, OE4WOG (downlink problems missed abt 30dB in downlink... , SP9VFD, DB6NT, F5BUU, F6BVA, G3WDG, GI7UGV, OZ1CTZ (first stn wkd in CW), DL4SCA in CW he runs 200mW!!! only into 40 turns helix, 9A2SB, DL5RDI, F5JWF was overloading and blocking the transponder, kindly requested to reduce by 20dB, F5BUU, DJ4ZC (!!), G4BAO, DF1OI, DC3ZB.
Not too bad for the beginning! About three stations are with poor modulation, all othesr excellent. So would be no longer a topic (quality of service)
IK0EQJ Is that 10 dB/div, so at your RX the tpx noise is around 10 dB stronger than 'normal' noise ?
Tuesday, Fe. 12th 15:22
during the last days xponder noise level is 10dB without any fading, VERTICAL, here in JO43VH 1,40m offset, KUHNE LNB Sounds promising
Transponder-TX is ON,
same level as in DEC 2018. TX is a beacon with a good idenfification, at the end at 11:04 just hallo hallo on sideband and then beacon disappeared.
Callsign and Locator WILL NOT BE PUBLISHED... lessons learned, but a audio sequence is on my smartphone+
Ah yes I remember the days when Leonid UA3CR first visited the AMSAT-UK colloquium and there was a lot more contact between Russian and western amateur satellite groups!
And he also was a very nice guy...
Yes I do remember quite well too. A man von PA0 made the translation (Chris van Berg?) and the teacher from Kettering, a lot of british humor. Still have the photos!!!
not too much words - just a photo. With this, I was quite succesfully during L/S-mode on AO-40- made a lot of tests with DJ1KM. In perigee we wkd sometimes with just 400mW out. Adjusted by the attentuator on 144 MHz, checked with EME powermeter - see below
In JO43VH seit einer Umstellung vor knapp 10 Tagen NIX, absolut NIX. Auch Kuhne LNB. 73 Rolf +
SV8QG, please tell the community about your experiences via AO-40 - best woukd be about the L/S users on AO-40 especially the so called alligators.+
CONGRATS to the constructors and the guys involved with this unique project
The usual "beacon" on 10.706 still in the noise.
But es2hail-beacon is peaking 30 dB SNR - no fading...
see foto below
73 DK2ZF
Jan 15th 06:50 UTC
10.706 beacon still in the noise... nothing at all
Tnx to all, confirming my obs this morning. Means
DK2ZF has one re-construction site less...
10.706 GHz beacon OFF this morning?
Checked with two different SDR-sticks. Same results.
Unfortunately do not have a second LNB to re-check.
Normally its 26 dB SNR
73 DK2ZF JO43VH
Moin Juergen,
that means for travelling inside the footprint 60 or 70cm will be sufficient. Unfortunately at prenst have not such a tiny one in my store...
73 Rolf +
for "weak stations" when the "alligators" are cranking up the AGC,
Honestly, did you ever hear so called alligators on L/S mode AO-40? at least DK2ZF never. 1269 MHz was hard to reach for most of the people in 2002
Hi Charlie - and Petra
made a lot of tests during the last days. My first setup for fixed operation (portable/travel setup under construction) I am lucky enough for a spacious housewall.. 1.4m dish vor RX and Kuhne LNB 1139 MHz IF RTLSDR. 0,60m dish with the famous G3RUH patchfeed 2m separated horizontally from RX-dish. With 20W RF absolutely no desensing - barely nothing.
Yes I remember the first attempts in L/S-mode on AO-40. YOUR 100dB notchfilter solved the problem.
