Hello, I have searched the archives for this, but I do not see an answer. My Question: What is the reason that I show *very weird* SWR curves at VHF/UHF when feeding through UHF bulkhead connectors t
My feelings are that the "Not Exactly 9913" is your problem. See if you can get some LMR-400 and sub for it. Joe W4AAB -- Original Message -- From: <k8bb@comcast.net> To: <vhfcontesting@contesting.co
Don There are all kinds of "bulkhead" UHF connectors. I've used the Short variety (83-1F) made by Amphenol with good results up to 2M but I've heard nothing but horror stories about the longer variet
UHF connectors are not 50 ohms. In cases where the length is small in terms of wavelengths the error is not significant. Hence a single connector won't matter, but the long bulkhead is too long. The
I have even seen SWR changes and velocity factor changes at HF with non-Amphenol short barrel connectors, PL259's, T-connectors, and push-on PL259 connectors. I've made a lot of coax stubs for HF con
Well, here is the conclusion: The bulkhead connector(s) I am using are causing the SWR problems at VHF and UHF. While visiting his QTH this past weekend, Tim Duffy, K3LR, was kind enough to check an
Verrry intresting! Tnx fer de feed back. Glad you were able to find the problem. 73, Bill, WF4R _______________________________________________ VHFcontesting mailing list VHFcontesting@contesting.com
Any speculation on the cause of the SWR problems? Could the metal used be a problem? E.g. stainless steel is used in many antennas (and touted for it's strength), but it's a horrible conductor and is
I am certain that if you measure the outside diameter of the rod, the inside diameter of the body and calculate the impedance of the resulting transmission line it WILL NOT be 50 ohms. UHF (misnomer)
the swr problem is due the fact that these connectors are not made to be 50 ohms at vhf frequency's.. I would think that the center tube is too big of a diameter.. but i don't know much about these t