Herb,
Thank you for your message and? explanations for use above 300 Mhz.
Most of time, i use the VNA from 1.8 to 146 MHz but sometimes until 440 MHz.
For this reason, i will follow your recommendation and construct a 300 MHz high-pass filter.
Regards,
Rudi
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Le 02.06.2020 ¨¤ 18:38, hwalker a ¨¦crit?:
On Tue, Jun 2, 2020 at 09:06 AM, Rudolf Schaffer wrote:
i thought to use it as a RF generator. I split the output (Mini-Circuits device 2 ways splitter) in 2 outputs;
one is used as the RF signal source (~-3dB loss) and the second output go to a frequency meter, with a G3RUH GPSDO
as reference. As a "CW" command is not available in nanovna-saver, i used the "CW" function, entering directly the
desired frequency "manually" into the nanovna.
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Rudi,
That set up will work O.K. below 300 MHz where only fundamentals are used, but at 300 MHz and above, where harmonics are used, you may need a 300 MHz high pass filter. At 300 MHz the fundamental at 100 MHz is 15 dB higher on my NanoVNA.
- Herb
