Hi,
with a multifeed clamp you can receive, but not transmit.
Best regards,
Detlev
Hi,
with a multifeed clamp you can receive, but not transmit.
Best regards,
Detlev
Hi,
then look at the DC with on oscilloscope when transmitting.
Regards,
Detlev
Hi Mike,
You need a highly stable, low-noise oscillator, i.e. a OCXO
Detlev
Hi Mike,
With a CW-only transmitter you can only save the modulator, the frequency processing is the same for reasons of stability.
73,
Detlev
Hallo Artur,
Interessante Messungen! Danke!
VIele Grüße,
Detlev
Hi,
does the artificial intelligence understand the speech?
Detlev
Write a message when you start. Good luck!
Detlev, DC7KG
I think the cable parameters are very important. I made three measurements with my VNA, only the adaptors, with 10 cm RG 316 an with 30 cm RG 316
Hi Edwin,
I recommend to test the cables with your VNA, through and terminated.
Detlev
Hello Edwin,
I hope your FT-817 is fixed. Check out the upconverter from PY1SAN on Youtube.
Regards,
Detlev
Hi,
here you can see the beam width: https://jcoppens.com/ant/helix/calc.en.php
Yes, that might work! Good luck!
Detlev
Hi,
for transmitting I use a Yaesu FT-818 on 432 MHz, 1.5 W, a dx patrol upconverter Mk. 2 (attention, unwanted sidebands if fully driven) and a 20 W amplifier from PE1CMO. The upconverter is synchronized with a 10 MHz OCXO (Bliley). My antenna is a 60 cm dish with a homemade 6 turns helix and an unmodified LNB. Length of the antenna cable 7 m Hyperflex 13.
For receiving the unmodified LNB is connected to an unmodified Pluto. I use SDR console and synchronize to the middle beacon.
Detlev
Hi,
die Verfügung 33/2007 nennt Richtwerte für die erforderliche Dämpfung unerwünschter Aussendungen
gegenüber der maximalen PEP des Senders, keine Grenzwerte!
Detlev
Es gibt eine neue Beta Version der SDR Console, Ver. 3.3
Detlev
Hi,
the output power of my VNA (SAA-2N) is 0.02 mW. Your amplifier has 13 dB gain, the result is an output power of 0.4 mW. That is not enough.
Best regards,
Detlev
Hallo Uli,
die 20 W Endstufe von PE1CMO braucht 70 ...80mW Eingangsleistung, der CN0417 macht 20 dB Verstärkung, so dass Du am Ausgang des Pluto nur etwa 1 mW benötigst. Ich werde das Spektrum mit Dreitonaussteuerung morgen mal messen.
Bei dem Signal/Rauschabstand des QO100 verschwinden alle Nebenaussendungen im Rauschen.
Gruß Detlev