Mark,
Any transmission line will have an impedance transformation unless it is
terminated in its characteristic impedance.
The other factor may be that you have some common mode current on the
coax shield - that can skew SWR readings.
73,
Don W3FPR
On 9/2/2014 8:06 PM, [email protected] wrote:
Good Evening,
This is Mark Griffin, KB3Z and I have some questions regarding the SWR readings
I get at my tower versus what I get on my K3. I will give the SWR readings that
I got at my tower for a 40 meter rotatable dipole at 55 feet.
Tower:
7000 2.2
7025 1.8
7050 1.5
7075 1.3
7100 1.0
7125 1.1
7150 1.3
7175 1.6
7200 2.0
7225 2.2
K3 Readings:
7000 3.5
7025 3.2
7050 2.9
7075 2.6
7100 2.4
7125 2.3
7150 2.4
7175 2.5
7200 2.6
7225 2.9
What would cause such a big difference. The cable run from my antenna switch on
the tower to my K3 is only an additional 75 feet. I am using RG-213 cable. Is
there anyway that I can test the SWR reading that my K3 is giving me?
Mark Griffin, KB3Z
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
