Hi,
thanks for the various feedback and multiple audio recordings, especially from Domenico, John and Mike.
Domenico, thanks for pointing out that the experiment you were referring to was the only S1/KU band experiment. Indeed the other recordings from the KU band downlink, which I have provided in the "Sounds from Space" collection, are indeed based on the L-band uplink.
Best regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] Im Auftrag von Matthias Bopp Gesendet: Samstag, 5. Februar 2011 20:12 An: amsat-bb@amsat.org Betreff: [amsat-bb] Re: AO40 contacts
Hi Domenico,
I do not think that this has been the only 24 GHz experiment on AO-40. You can find audio recordings of the 24 GHz signals of DK1KQ and DB6NT on my website www.dd1us.de in the sounds from space collection. I will be happy to add your signals too if you want to provide me a copy of the recording.
Best regards
Matthias DD1US
www.dd1us.de
----- Original Message ----- From: n1jez@burlingtontelecom.net To: "amsat-bb" amsat-bb@amsat.org Sent: Friday, February 04, 2011 1:16 PM Subject: [amsat-bb] Re: AO40 contacts
Those were fun days Clare!
My most challenging contacts were made using K band (24 GHz down). First contact was on 4/20/2002 with Jerry, K5OE.
http://www.burlingtontelecom.net/~n1jez@burlingtontelecom.net/index.html
I think the only mode I never got to try was 2.4 GHz up. I have the transverter sitting here in my shack, but AO-40 went bang before I got to use it. The plan was S/k.
73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"
Hi Mike, N1JEZ
You should remember that you and I and Charles G3WDG we partecipated to the only one test made on 2.4 GHz up and 24 GHz down i.e. mode S1/K on AO40 on day 02/23/2003 and I was received on 24 GHz both by you and by G3WDG.
I still have your CD diskette made by you and sent to me with the record of my 24 GHz signal received by you in Burlington VT
Unfortunately at that time I was not ready to receive on 24 GHz but I was only able to transmit on 2.4 GHz with 10 watt at a 4 feet prime focus dish.
Unfortunately for that experiment scheduled by AMSAT and command station Stacey Mills W4SM only three stations where active i.e G3WDG, N1JEZ and my self ,i8CVS
G3DWG was equipped to transmit on 2.4 GHz and to receive on 24 GHz so that only he was able to get back his own signal from the transponder.
You where only able to receive on 24 GHz but not to transmit on 2.4 GHz so that you where able only to copy G3WDG and i8CVS on 24 GHz
I was able only to transmit on 2.4 GHz but not to receive on 24 GHz so that at the end of the experiment no two way QSO S1/K was possible to made between us but most important the experiment demonstrated that the S1 2.4 GHz receiver on board of AO40 was working and was alive and well !
Those were really fun days Mike !
73" de
i8CVS Domenico
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb