[hpsdr] No power output for Transverters - now fixed

[K1rqg at aol.com]

Bill
 
These measurements are made with the Penelope v1.1
and PowerSDR (KD5TFD  25Feb2009) revision 2713 (2716?).
Thanks to Bill for looking into the XVTR  issue. 
 
Measurements made prior to rotating T-2 on 
Penelope 180 degrees.  PowerSDR Setup is all PA 
settings are 38.0 db, and tune is always at
100  (w) or % !!! PowerSDR is the reading 
with TX Meter in Fwd Pwr, and Power  Meter readings
are made with an HP-432A power meter with HP-478a 
head  through a Narda 20 db DC-18 ghz attenuator. 
The Thermistor Mount is a Model  478A which only goes 
down to 10 Mhz. So the power meter measurements at  40
meters and below are suspect.
 
Where you see 70cm, 23cm & 13 cm, this is setup in the
XVTR table  with LO's of 404 mhz, 1268 mhz & 2276 mhz to
yield an "IF" of 28 mhz.  Power in the XVTR setup is
always set to 100. I do see a difference from full  output
with 10 meters selected vs full output with the 28 mhz 
"IF" as  selected in the XVTR setup for the three UHF bands.
 
I still see a problem with XVTR Setup pertaining to "RX Gain"
no effect  and Power (wierd effects). I believe these to be
"inherited" from the  original PowerSDR. I had these same
issues with SDR-1000 and PowerSDR 1.10  and later. If you
setup for 3 transverters and enter power numbers like  100,
75, and 50 respectively, then when you select a VHF band and
click  through them, the power setting will randomly change.
 
 
 
Band    PowerSDR    Power Meter
 
160     347mw       135mw  21.3dbm 
80       360mw       251mw 24.0dbm  
60      357mw        288mw 24.6dbm 
40       345mw       302mw 24.8dbm  
30      323mw        302mw 24.8dbm 
20       290mw       282mw 24.5dbm  
17      265mw        263mw 24.2dbm 
15       250mw       251mw 24.0dbm  
12      237mw        245mw 23.9dbm 
10       220mw       230mw 23.6dbm  
6        82mw        100mw 20.0dbm  
70cm    188mw       204mw  23.1dbm (28 mhz IF)
 
The following measurements were made AFTER rotating
T-2 on Penelope 180  degrees per Penelope_Errata.pdf.
 

Band    PowerSDR    Power Meter
 
160     605mw       245mw  23.9dbm
80       623mw       436mw  26.4dbm
60       627mw       501mw  27.0dbm
40       605mw       525mw  27.2dbm
30       570mw       525mw  27.2dbm
20       520mw       490mw  26.9dbm
17       478mw       447mw  26.5dbm
15       452mw       437mw  26.4dbm
12       428mw       407mw  26.1dbm
10       396mw       398mw  26.0dbm
6        147mw       174mw  22.4dbm
70cm    340mw        347mw 25.4dbm (28 mhz IF)
23cm 340mw        347mw 25.4dbm (28 mhz IF)
13cm     340mw       347mw 25.4dbm (28 mhz IF)
 

73 de Joe
K1RQG


In a message dated 2/26/2009 1:08:10 A.M. Eastern Standard Time,  
bill at ewjt.com writes:

*****  High Performance Software Defined Radio Discussion List *****

A while  back a few folks pointed out that there was no power out for 
transverters  when using Penelope.  I believe I've fixed this - try 
SVN 2713 or  greater from  
svn://206.216.146.154/svn/repos_sdr_windows/PowerSDR/branches/kd5tfd/PennyMerg
e/bin/Release  
and let me now.

Cheers,

Bill (kd5tfd)   




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