Hi Ron,
Just to understand:
You are disconnecting the cable from the back of the radio and connecting
it to the vna? Is that correct? You are not using a different jumper or
removing any of the existing items that are inline when connected to the
radio, correct?
If you are, that might change what you are reading.
Thanks,
Marco
On Fri, Nov 15, 2019, 9:38 PM Ron - An Old Ham in Utah <k7uv@...>
wrote:
I'm using an external full-range tuner with a straight through (direct
without using tuner function) reading to use the cross-needle SWR/PWR
reading, so no, I'm not using the rig meter for SWR measurements. The
frequency for lowest SWR as well as the actual SWR level are off. Comparing
the NANOVNA readings versus the SWR measurement show 1.3:1 on the nano
device and 2.6:1 with the SWR meter when I'm transmitting. Perhaps this
discrepancy is to be expected between devices and exceeds measurable
accuracy? I would think the nano device reading would be more accurate, but
while transmitting, the SWR is high enough to cut back the power level from
that with a lower SWR. Usually, my transmitter self-protects when the SWR
is 2.0:1 or higher. Thanks and 73.
--
Ron, K7UV
