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Re: Copying AO-40, but not sure why
Hi Bill,
I think you are seeing exactly what one might expect with your
setup/downconverters:
2401.390 ---> 145.390 ---> 28.390
What 2.4GHz frequency were you targeting?
73,
Mark N8MH
At 12:26 PM 4/20/2001 -0400, you wrote:
>Here's the setup: Drake 2880 with crystal mod 8.8125,
>removed the two IF coils and that's all.
>
>Output the Drake into a Hamtronics CA145-28 converter.
>
>Output the Hamtronics converter into my ICOM 756 PRO.
>Listened for signal at 27.0318 Mhz...never heard a thing.
>
>Decided to tune around the 28 Mhz band to see if I could hear
>anything...Viola!! at 28. 39905 I hear this buzzing sound.
>Put my Radio Shack wireless headset on and went outside
>where I had the Bob Meyers Bar-b-cue grill leaning against
>a chair and pointing to where I thought AO-40 was. I picked
>it up and moved it around and the signal went up and down
>and was strongest where AO-40 should be. Was this AO-40
>are some RADAR signal somewhere?
>
>Back into the house I brought up WECPSK version 1.1a.
>Double Viola!!! The program began to copy...I've added
>a bit of what I got below...I still have to go through and see
>if I have any valid CRC blocks, but at this stage, I'm amazed
>at what I got with my kludged setup.
>
>Big question is, why am I received the signals at 28.38723?
>This was the final frequency I was receiving on before LOS.
>
>The Hamtronics CA145-28 was peaked around 145 MHz, and
>while I was receiving AO-40 I peaked the RF and multiplier
>coils for maximum signal strength, around S-9 on the 756
>PRO...the spectrum scope sure helps in finding a signal.
>
>I would appreciate any comments on why I'm receiving at
>around 28.380-28.399MHz.
>
>tnx, de Bill, N4DH
>
>----------------------------------------------------------------------------------------------------------------------------------
>Here is a bit of what I copied.
>
>NOT REGISTRED WPSKDEC 1.1d - AMSAT-FRANCE
>
>## AO-40 IHU-1 Telemetry Display - OE1KIB, OE1VKW, F1HDD, XTOPHE ##
>A HI, THIS IS AMSAT OSCAR-40 2001-04-20 15:20:04 #00DD
>+----------------------------------.--------------.------------+
>| All beacons will be OFF from MA = 3 to MA = 80 |
>+--------------------------------------------------------------+
>________________________ Orbit data ____________________________
>AMSAT day 08510 Time 15:20:04.36 UTC Orbit No 00216 Phase 245
>________________________ Status ________________________________
>RX: U(-2.2dB) L1(0.6dB)
>TX: S2(0x6bW MB)
>Beacons: GB(PSK;) MB(EB source; S2/Ku)
>Ant/Pre-amps: V-Rx=hi V-Tx=om U-Rx=hi U-Tx=om L-hi+preamp
>Experiments: IHU-2
>Main battery on; Memory soft error count: 3
>________________________ Temperatures [°C] _____________________
> SolPan1 -22.3 SolPan2 -17.6 SolPan3 -17.6 SolPan4 -18.3
> SolPan5 -17.6 SolPan6 -20.9
> BCR1 8.7 BCR2 17.3 BCR3 14.7
> MainBatB2 35.1 MainBatB4 97.7 MainBatB6-22.3
> AuxBatB1 39.0 AuxBatB5 19.9
> V-TX 16.6 U-Excit 13.3 U-Amp 20.6 S1-TX 10.0
> S2-TX 13.3 X-TX 86.5 X-TX TWT 88.5
> U&V-RX 6.7 L1-RX 8.7 L2-RX 14.0 S1-HF RX 14.0
> S2-C RX 14.7 IHU 4.1 SEU 2.8 EPU 18.6
> HP1+X-Y 20.6 HP2+X+Y 17.9 HP2+X-Y 17.9 HP2-X 97.7
> HP3+X 12.7 HP3-X 13.3 HP4+X+Y 9.4
> NH3 B2 37.1 MMH B3 16.0 N2O4-X-Y 97.7 N2O4+X+Y 14.7
> He Tank 97.7
> Top 97.7 Bottom 97.7 Back 97.7 Side2Pan -0.5
> Side4Pan -2.5 S ant 1.5
>________________________ Voltages [V] __________________________
> Main-Bat 27.9 Aux-Bat 24.4
> BCR1-In 19.8 BCR2-In 23.3 BCR3-In 23.2
> 28V Bus 27.6 10V-C1BCR2 10.5 10V-C2BCR3 10.6
>________________________ Currents [mA] _________________________
> SP1-BCR1 16427 SP4-BCR2 16427 SP2-BCR3 16427
> SP6-BCR1 16427 SP5-BCR2 16427 SP3-BCR3 16427
> 10V-C1BCR2 2025 10V-C2BCR3 2038 28V-SSEU 0x9b
> 28V-Bat 1014 28VU1EPU -1 28VU2Bus 2807
> 28VU3-S 558 28V-BCR 3443
> 28VS-PA/M 4601 10VS-PA/M 0xa5 X-Helix 3 K-Tx 0x8c
>________________________ Sun/Earth Sensors _____________________
>Sensor mode: spin
> SS1 PLL: locked SS2 count: 242 SpinRate[rpm] 0.9
> SS Z-25 -4° SS Y-25 -4° SS Up-X 0° SS Up-Y 0°
> SS Z-45 -6° SS Y-45 -6° SS Dwn-X 85° SS Dwn-Y 58°
>###### AO-40 IHU-1 Telemetry Display --- End of A/E Block ######
>
> CRC NOT VALID 2d6 instead 18c5
> NOT REGISTRED WPSKDEC 1.1d - AMSAT-FRANCE
>
>M QST de AO-40 2001 Apr 15. Best estimate of attitude Alat=14;Alon as
>per table. Your telemetry, good or"... .E@..pi.tÉ. DÊxÐe@ .an...aj.x oÊ
>.pÆ v.b.e.B..tH @P.Ê... "b.."@.o.@ti.p JÏu".a.À. ..x.m.HtÙ ...e. b|.
>Fehd ...@.b.tt.lg...M.Df.j.Æ...p.$N.rÈ biJ@A.eÐ p TeF B`.n@¼ T.¼@A.f.
>.@.fp@.l.. ø Rö.....h. .Åp Blfd 4Q0 @122 ¼ .1U @Q15@| 210 @1.8 | R19 101
>| 222 94 | 225 . R1a 240 . 214 112 | .17 R05 | 220 @98@ p R20 Aa
>|@4RV@ 84 412 1Q7 L R1. 1Q0@¼@4Q8 @R`5 p@RT1 :. | .24 89 | .27 @8R@
> CRC NOT VALID e5f8 instead 9a2b
>
>----
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Mark L. Hammond [N8MH]
----
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