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Re: AO-40 Telem. Temps.



Let me show my lack of knowledge.  I know your very busy Peter but I read
88 degrees as the X band transmitter temperature.  Am I reading a direct
temperature or not aware of a conversion table?  Cliff K7RR

On Sun, 10 Dec 2000, Peter Guelzow wrote:

> Hi,
> 
> Temperatures for the X-Band TX are only valid if the X-Band TX is
> powered up, because they are measured by the module electronics
> itself..
> 
> 73s Peter DB2OS
> 
> 
> Norm McMillan wrote:
> > 
> > G'day all,
> > 
> > This frame from this morning Aust EDST shows the X-band exciter and
> > Travelling Wave Tube to be VERY hot. Now, I have a considerable amount of
> > experience with X-band Radar, and I know that the Twit does run hot, But....
> > 
> > Perhaps I'm missing something?
> > 
> > AMSAT day 08379  Time 21:57:22.76 UTC  Orbit No 00050  Phase 118
> > ________________________ Status ________________________________
> > RX: U(-1.7dB) L1(0.6dB)
> > TX: V(0x80W MB)
> > Beacons: GB(PSK;) MB(EB source; V)
> > Ant/Pre-amps: V-Rx=hi V-Tx=om U-Rx=om U-Tx=hi L-om+preamp
> > Experiments: IHU-2 RUDAK Cedex-ctrl Cedex-pwr
> > Main battery on; Charger on; Memory soft error count: 5
> > ________________________ Temperatures [C] _____________________
> >   SolPan1   -2.5  SolPan2   14.0  SolPan3   15.3  SolPan4   14.7
> >   SolPan5   14.7  SolPan6   -1.2
> >   BCR1       8.7  BCR2      14.7  BCR3      12.0
> >   MainBatB2 13.3  MainBatB4 13.3  MainBatB6 -2.5
> >   AuxBatB1   5.4  AuxBatB5   7.4
> >   V-TX      29.8  U-Excit   10.7  U-Amp     11.4  S1-TX     10.7
> >   S2-TX     11.4  X-TX      86.0  X-TX TWT  88.1 ********************<<<?
> >   U&V-RX    14.0  L1-RX     13.3  L2-RX      8.1  S1-HF RX  10.0
> >   S2-C RX    9.4  IHU        3.4  SEU        1.5  EPU       13.3
> >   HP1+X-Y   10.7  HP2+X+Y   14.7  HP2+X-Y   14.7  HP2-X     16.0
> >   HP3+X     11.4  HP3-X     11.4  HP4+X+Y   10.7
> >   NH3 B2     9.4  MMH B3    10.0  N2O4-X-Y  10.0  N2O4+X+Y   8.7
> >   He Tank   10.0
> >   Top       16.6  Bottom     5.4  Back      10.0  Side2Pan  10.7
> >   Side4Pan  11.4  S ant     13.3
> > 
> > PS...
> > 
> > Paul W.    Notice I've cut this one down???  ;-)
> > 
> > Norm. Vk2XCI. Mount Hope, NSW, Australia
> > Voice of The Edge Of The Outback
> > 
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