Posts by SP3OSJ
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Hi
Aluminium case PA im Oxid ist ein Isolator!
Sie benötigen Schleifpapier, um das oxidierte Aluminium auf der Oberfläche des gesamten inneren Teils der befestigten Leiterplatte PCB PA von der Verbindung abzuschleifen.73
Artur
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Hi
Thank you for a good review. I bought BLP9G0722-20G in China at $ 9/piece. They will sell me the original transistors:
https://de.aliexpress.com/item/4001241935303.html
I now change the design and put in a new housing like my TRV. Now you can make 12V power supply because there is a step up converter with potentiometer regulating from 12V to 30V.
73
Artur
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Dish size: H110cm D=99cm and F=72cm;
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OK Mike you're right.
Additional photos.
Measured Antennas: POTY has old measurement SWR: 1.35 and new measurement SWR: 1.02! This is not a scam. The old POTY aerial measurements had condensed water vapor (temperature difference) when taking the measurement:
and receiving signal and receiving without signal. (LNB for "POTY": +11dBm, LNB for "Helix": +14dBm) -> including TRV no new TRX calibration "dBm"
the focal position (with photos):
I have an original Rocket lens:
Mike look:
http://mikrofale.iq24.pl/podgl…asp?id_komentarza=3470202
Artur
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RX:
Thank you for reading material.
Ich wünsche dir ein frohes neues Jahr und bleib gesund.
Vy 73
Artur SP3OSJ
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TX (8W):
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TX (5W):
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Mounted on a offset dish (~1m)
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SWR:
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Hi
POTY (PE1CKK) vs Helix 4,5turn (DM4DS)
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Hi
In the magazine: "Swiat Radio" (Radio Word) there is an article about the TRV2 and the Oscar-100.
I wish you Merry Christmas, with joy and happiness for you and your family!
73
Artur
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Hi
VNA V2_2 SAA-2N 4 inch works very well
73
Artur
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Hi
Thanks for your comments.
I used 2.1MHz capacitors (Note transistor PDF).
Then I changed them and swapped 0p5F and 2p2F and forgot to draw it. If you remove the soldermaske capacitors 1p8 and 1p2 from the bottom, these must be selected individually.
I changed the 110R resistor to 75R to get the bias of the transistor 400mA at 28V.
1) My circuit is for PTT on antenna cable 50R + 5V cable (low current efficiency). Picture: 1a.jpg / PA_a.jpg
2) For VOX. I haven't checked this layout but it should be OK. Diode 2x BAT62. Picture: 1b.jpg / PA_b.jpg
3) External PTT + 12V TX. Picture: 1c.jpg / PA_c.jpg73
Artur
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Hi
BOM (pdf) my TRV2
73
Artur
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Hi
A few photographs of TRV2
The VCOCXO generator has its own additional housing
50R (6x300R) 6x2W resistors do not touch the PCB.73
Artur
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Hi
50MHz firmware added for ATtiny13
TRV2_6_10 for out 50.5-51MHz and 29-29.5MHz
For people who have problems with ATtiny programming, I can suggest ATTiy already programmed for this TRV.
73
Artur
