Oliver,
please tell me more about the Patch Antenna ....
br 73
OE3CBS
SG-Labs 20 W PA V.3
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G8AWB hallo, if you are still interested in my SG-Lab PA V2 contact me on my Callsign @DARC.
oe3cbs hallo, it is a commercial WIFI Antenna from WIMO with integrated multiple patched (guess 2 double-fields) model PA-13R-20.
It have 20dBi and is 33x33x9cm. For me it is ideal as it is very small and easy to handle. No problem to reach the satellite
. Advantage, no adjustment needed/possible and disadvantage, just a transmit antenna. So I work via WebSDR and this solution.vy 73, Oliver
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@Oliver: Thank you
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Hi
Do I have to ground the PTT, or can I just use the VOX? Thanks!
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The VOX is always active. As long as you just use SSB, it's not necessary to do anything with the PTT.
However, at CW speeds higher than 15 WPM or so, my setup tends to "eat" the first dot (no dashes), i.e. either the PA's or the transverter's VOX doesn't react fast enough. If you plan to use CW more than occasionally, I'd recommend to wire the PTT.
73 Jens
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Thanks Jens !
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If I want to bring the forward and reflected voltage signals out of the case of my on order AMP2400v3 do I need to use feed through capacitors, and if so, what value might anyone suggest please? For cooling would a big computer CPU cooler with a small 12V fan be up to the job? The cooler heatsink's footprint is similar to that of the amp's case. Thanks.
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Hallo,
is there any information about the first MMIC in the SG-Lab-PA V3? An om in the neighbourhood has some trouble and I'll try to help.
A type or a link to a datasheet is appreciated.
Thanks
73
Andreas -
It is fixed, the chip is from NXP, type MMG30271BT1.
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Thanks for sharing the chip type, that's useful info.
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If I want to bring the forward and reflected voltage signals out of the case of my on order AMP2400v3 do I need to use feed through capacitors, and if so, what value might anyone suggest please? For cooling would a big computer CPU cooler with a small 12V fan be up to the job? The cooler heatsink's footprint is similar to that of the amp's case. Thanks.
look for more info in this thread:
https://forum.amsat-dl.org/index.php?thread/91-sg-laboratory-
It works fine for me. and use the values for a simple SWR meter in the case where the transverter is built in..
