Posts by DC7KG

If you need support please use the online forum as I can't reply properly to all the e-mails I receive.

Hello,

ask G4ELI.

Best regards,

Detlev

Dear Jabi,

look at ebay for HP power meter or HP 436, HP 437 or HP 438 and for the power sensors.

Regards,

Detlev

Hello,

There is a variety of affordable power meters from HP that are accurate.

Detlev, DC7KG

Hi,

with a multifeed clamp you can receive, but not transmit.

Best regards,

Detlev

Hi,

look at "Where can I buy a TCXO", I tested the Chinese OCXO

I've used the OSC101 as external clock. It is completely useless. I transmitted on 2.4 GHz with the internal clock (image left) and with the OSC 101 as external clock (image right).

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

The YouTube Videos from PY1SAN are very interesting, they show his oscillator ADF 4351 and the mixer.

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