I was reading recently about the status of RS-15 which was declared semi-operational. Nevertheless I thought I would give it a try. I would sporadically hear the beacon and then try to access the transponder and remained persistant in trying for several days, then about 3 days ago I turned on my rig to try and forgot the uplink frequency and wrongly entered 144.958 to 144.998 [rather than the listed uplink of 144.858 to 144.898] and the transponder responded with the downlink still in the listed range of 29.354-29.394. I have continued to be able to get the transponder to respond by useing the "wrong" uplink of 144.958-144.998. I hope others will try the same as I sure would like to make some contacts rather than simply hearing my own signal. Thanks. Gary DeMunbrun [ WA4RKS].
Hello gary- de patrick n2oeq. Please describe your operating conditions. I'll try to listen. 73
On Thu, 21 Sep 2006 Garyatlnt@aol.com wrote:
I was reading recently about the status of RS-15 which was declared semi-operational. Nevertheless I thought I would give it a try. I would sporadically hear the beacon and then try to access the transponder and remained persistant in trying for several days, then about 3 days ago I turned on my rig to try and forgot the uplink frequency and wrongly entered 144.958 to 144.998 [rather than the listed uplink of 144.858 to 144.898] and the transponder responded with the downlink still in the listed range of 29.354-29.394. I have continued to be able to get the transponder to respond by useing the "wrong" uplink of 144.958-144.998. I hope others will try the same as I sure would like to make some contacts rather than simply hearing my own signal. Thanks. Gary DeMunbrun [ WA4RKS]. _______________________________________________ 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
----- Original Message ----- From: Garyatlnt@aol.com To: amsat-bb@amsat.org Cc: Garyatlnt@aol.com Sent: Thursday, September 21, 2006 6:09 PM Subject: [amsat-bb] RS-15 satellite.
I was reading recently about the status of RS-15 which was declared semi-operational. Nevertheless I thought I would give it a try. I would sporadically hear the beacon and then try to access the transponder and remained persistant in trying for several days, then about 3 days ago I turned on my rig to try and forgot the uplink frequency and wrongly entered 144.958 to 144.998 [rather than the listed uplink of 144.858 to 144.898] and the transponder responded with the downlink still in the listed range of 29.354-29.394. I have continued to be able to get the transponder to respond by useing the "wrong" uplink of 144.958-144.998. I hope others will try the same as I sure would like to make some contacts rather than simply hearing my own signal. Thanks. Gary DeMunbrun [ WA4RKS].
Hi Gary, WA4RKS
The listed frequency for the uplink Mode-A of RS-15 is 145.858 to 145.898 MHz and not as you writes 144.858 to 144.898 MHz
Now if you wrongly entered 145.958 to 145.998 MHz (as I believe) and the transponder responded with the downlink still in the listed range 29.354 to 29.394 MHz it is possible that the local oscillator in the down-converter on board of RS-15 changed the nominal frequency increasing it by about 100 KHz because of crystal aging and this is possible.
If instead you really entered 144.958 to 144.998 MHz as you writes for the uplink it is more difficult to accept that the local oscillator on RS-15 down-converter decreases its nominal frequency by 900 KHz
Anyway while listening RS-15 using your claimed anomalous uplink you should verify if you have doppler shift, if you have QSB, if you get the downlink only when RS-15 is in range or if you get your own signal at any time.
In addition you should verify if transmitting in the anomalous uplink from 144.958 to 144.998 MHz you get your own signal from 29.354 to 29.394 MHz because of some unwanted mixing product between your TX/RX
For your information on 3 august 2006 at 13:33 UTC orbit 47788 I have received the 29.353 MHz beacon of RS-15 as a 4.5 sec. intermittent and unmodulated carrier with QSB but uplinking in the official listed frequency range any attemp to get my downlink was unsuccesfull.
73" de
i8CVS Domenico
Hi Domenico, Garry & the Group
today morning RS-15 was on excellent pass (orbit #48359) over my QTH. At 04.47Z it was over Nigeria with 7.5° El when I turned-on my HF. The beacon was audible very clear, 55 on my TS-850 without preamp - FD3 antenna ( 10m Band was very quietly and clear, ideal receiving conditions).
At 04.57 Z it was close to me and I tried a "shoot" on Uplink frequencies between 145.958 - 998 (as Gary suggested ??), by covering continuously the 40 KHz bandwidth again & again (unfortunately I have only 150 Watts EiPR this period).
Absolutely nothing heard it on DownLink (29.354-394).
I changed my frequency with standard Uplink of RS-15 and I tried again between 145.858 - 898. Nothing again.
I returned again onto Beacon frequancy and I surprised because the Beacon now was OFF! (05.00 Z). RS-15 was overhead ( 88°).
Between 05.00 -05.15 Z the pass was in very good range for my antenna (I 'm completely "clear" at this direction) and I tried again several times in both Uplink-zones as abovementioned . Nothing again. Also the Beacon was OFF till LOS.
I don't know if Garry's typeset was correct or not (144 and not 145 MHZ) but I believe like you Domenico, he wrote by wrong typeset 14(4) and not 145 MHZ. Unfortunately the bird did not correspond to me on 145 MHZ Uplink... even if I used the 858-898 or 958-998 Uplink subzone. Too bad !
I'm waiting Garry's reply for clarification about 144 or 145 and I will try again.
Have a nice weekend.
73, Mak SV1BSX
sv1bsx@yahoo.gr http://www.qsl.net/sv1bsx
LAN eMail-Server: This Email has been checked by NAV 2006 Virus Free
----- Original Message ----- From: "i8cvs" domenico.i8cvs@tin.it To: Garyatlnt@aol.com; "AMSAT-BB" amsat-bb@amsat.org Cc: Garyatlnt@aol.com Sent: Friday, September 22, 2006 7:23 PM Subject: [amsat-bb] Re: RS-15 satellite.
----- Original Message ----- From: Garyatlnt@aol.com To: amsat-bb@amsat.org Cc: Garyatlnt@aol.com Sent: Thursday, September 21, 2006 6:09 PM Subject: [amsat-bb] RS-15 satellite.
I was reading recently about the status of RS-15 which was declared semi-operational. Nevertheless I thought I would give it a try. I
would
sporadically hear the beacon and then try to access the transponder and remained persistant in trying for several days, then about 3 days ago I turned on my rig to try and forgot the uplink frequency and wrongly entered 144.958 to 144.998 [rather than the listed uplink of 144.858 to 144.898] and the transponder responded with the downlink still in the listed range of 29.354-29.394. I have continued to be able to get the transponder to respond by useing the "wrong" uplink of 144.958-144.998. I hope others will try the same as I sure would like to make some
contacts
rather than simply hearing my own signal. Thanks. Gary DeMunbrun [ WA4RKS].
Hi Gary, WA4RKS
The listed frequency for the uplink Mode-A of RS-15 is 145.858 to 145.898 MHz and not as you writes 144.858 to 144.898 MHz
Now if you wrongly entered 145.958 to 145.998 MHz (as I believe) and the transponder responded with the downlink still in the listed range 29.354 to 29.394 MHz it is possible that the local oscillator in the down-converter on board of RS-15 changed the nominal frequency increasing it by about 100 KHz because of crystal aging and this is possible.
If instead you really entered 144.958 to 144.998 MHz as you writes for the uplink it is more difficult to accept that the local oscillator on
RS-15
down-converter decreases its nominal frequency by 900 KHz
Anyway while listening RS-15 using your claimed anomalous uplink you should verify if you have doppler shift, if you have QSB, if you get the downlink only when RS-15 is in range or if you get your own signal at any time.
In addition you should verify if transmitting in the anomalous uplink from 144.958 to 144.998 MHz you get your own signal from 29.354 to 29.394 MHz because of some unwanted mixing product between your TX/RX
For your information on 3 august 2006 at 13:33 UTC orbit 47788 I have received the 29.353 MHz beacon of RS-15 as a 4.5 sec. intermittent and unmodulated carrier with QSB but uplinking in the official listed
frequency
range any attemp to get my downlink was unsuccesfull.
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
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Hi Mak, SV1BSX
Just for curiosity on your next try uplink please from 144.958 to 144.998 MHz
Who knows ?
73" de
i8CVS Domenico
----- Original Message ----- From: "SV1BSX" sv1bsx@yahoo.gr To: "i8cvs" domenico.i8cvs@tin.it Cc: "Amsat-BULL" amsat-bb@amsat.org; Garyatlnt@aol.com Sent: Saturday, September 23, 2006 9:20 AM Subject: Re: [amsat-bb] Re: RS-15 satellite.
Hi Domenico, Garry & the Group
today morning RS-15 was on excellent pass (orbit #48359) over my QTH. At 04.47Z it was over Nigeria with 7.5° El when I turned-on my HF. The beacon was audible very clear, 55 on my TS-850 without preamp - FD3 antenna ( 10m Band was very quietly and clear, ideal
receiving
conditions).
At 04.57 Z it was close to me and I tried a "shoot" on Uplink frequencies between 145.958 - 998 (as Gary suggested ??), by covering continuously the 40 KHz bandwidth again & again (unfortunately I have only 150 Watts EiPR this period).
Absolutely nothing heard it on DownLink (29.354-394).
I changed my frequency with standard Uplink of RS-15 and I tried again between 145.858 - 898. Nothing again.
I returned again onto Beacon frequancy and I surprised because the Beacon now was OFF! (05.00 Z). RS-15 was overhead ( 88°).
Between 05.00 -05.15 Z the pass was in very good range for my antenna (I
'm
completely "clear" at this direction) and I tried again several times in both Uplink-zones as abovementioned . Nothing again. Also the Beacon was OFF till LOS.
I don't know if Garry's typeset was correct or not (144 and not 145 MHZ) but I believe like you Domenico, he wrote by wrong typeset 14(4) and not 145 MHZ. Unfortunately the bird did not correspond to me on 145 MHZ Uplink...
even
if I used the 858-898 or 958-998 Uplink subzone. Too bad !
I'm waiting Garry's reply for clarification about 144 or 145 and I will
try
again.
Have a nice weekend.
73, Mak SV1BSX
sv1bsx@yahoo.gr http://www.qsl.net/sv1bsx
LAN eMail-Server: This Email has been checked by NAV 2006 Virus Free
----- Original Message ----- From: "i8cvs" domenico.i8cvs@tin.it To: Garyatlnt@aol.com; "AMSAT-BB" amsat-bb@amsat.org Cc: Garyatlnt@aol.com Sent: Friday, September 22, 2006 7:23 PM Subject: [amsat-bb] Re: RS-15 satellite.
----- Original Message ----- From: Garyatlnt@aol.com To: amsat-bb@amsat.org Cc: Garyatlnt@aol.com Sent: Thursday, September 21, 2006 6:09 PM Subject: [amsat-bb] RS-15 satellite.
I was reading recently about the status of RS-15 which was declared semi-operational. Nevertheless I thought I would give it a try. I
would
sporadically hear the beacon and then try to access the transponder
and
remained persistant in trying for several days, then about 3 days ago I turned on my rig to try and forgot the uplink frequency and wrongly entered 144.958 to 144.998 [rather than the listed uplink of 144.858
to
144.898] and the transponder responded with the downlink still in the listed range of 29.354-29.394. I have continued to be able to get the transponder to respond by useing the "wrong" uplink of
144.958-144.998.
I hope others will try the same as I sure would like to make some
contacts
rather than simply hearing my own signal. Thanks. Gary DeMunbrun [ WA4RKS].
Hi Gary, WA4RKS
The listed frequency for the uplink Mode-A of RS-15 is 145.858 to 145.898 MHz and not as you writes 144.858 to 144.898 MHz
Now if you wrongly entered 145.958 to 145.998 MHz (as I believe) and the transponder responded with the downlink still in the listed
range
29.354 to 29.394 MHz it is possible that the local oscillator in the down-converter on board of RS-15 changed the nominal frequency increasing it by about 100 KHz because of crystal aging and this is possible.
If instead you really entered 144.958 to 144.998 MHz as you writes for the uplink it is more difficult to accept that the local oscillator on
RS-15
down-converter decreases its nominal frequency by 900 KHz
Anyway while listening RS-15 using your claimed anomalous uplink you should verify if you have doppler shift, if you have QSB, if you get the downlink only when RS-15 is in range or if you get your own signal at any time.
In addition you should verify if transmitting in the anomalous uplink
from
144.958 to 144.998 MHz you get your own signal from 29.354 to 29.394 MHz because of some unwanted mixing product between your TX/RX
For your information on 3 august 2006 at 13:33 UTC orbit 47788 I have received the 29.353 MHz beacon of RS-15 as a 4.5 sec. intermittent and unmodulated carrier with QSB but uplinking in the official listed
frequency
range any attemp to get my downlink was unsuccesfull.
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
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participants (4)
-
Garyatlnt＠aol.com -
i8cvs -
McGrane -
SV1BSX