Jim, ignorant question - at X=0, isn't the resistive component also the
impedance?
73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at <http://beta.reversebeacon.net>.
For spots, please use your favorite
"retail" DX cluster.
On 3/25/2021 3:08 PM, Jim Brown wrote:
On 3/25/2021 11:39 AM, N4ZR wrote:
The feedpoint choke is wound on a #43 core (I think), which may make
it a bit more credible.
Very wrong core for HF and 6M. #31 is the only good choice.
The measured minimum SWR is 2.2 at 1925 KHz, and resonance (X
crossing zero) is at 1983 KHz. All measurements made at the base of
the antenna
Now here's the part I *really* don't understand - at X=0, the R
measures 119 ohms.
The value at X=0 doesn't make sense to me either. Lower SWR at 1925 does.
I suggest that you do an impedance to display the impedance, not SWR.
If your analyzer can't do it, borrow one that can.
73, Jim K9YC
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband
Reflector
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
|