Antenna swr questions

BECAUES ......

They were CHEAP .... unlike a N or TNC or BNC so they were common on HAM radios just after WW2 .....

On 2 meters when I run over 100 watts the PL-259/SO-239 get HOT a N connecter does not ....

 

Maybe that is because the PL-259/SO-239 is only rated to 30 Mhz.


Leon
(kc0iv)

 

It has always puzzled me .....

WHY DO THEY CALL THEM UHF CONNECTORS

 

Cross polarization loss should be ~20 dB not half or 3 dB.

And the pattern, the gain as you look down the antenna (like a gun) is at least -20 dBi compared to ~ 2 dBi for a vertical omni.
-20 + -20 is -40 dB that's very deaf.

The reason I heard for some operators tilting their antennas forward was to counteract the headwind flexing the antenna back and supposedly causing SWR problems by proximity to the stacks.

In WWII uhf was 30 MHz and above

I was just researching PL-259 connectors, I was just considering replacing the SO-239 ?? on the back of my radios with a N female bulkhead mount plugs I have left over from my Wifi project. But I'm not suggesting it for anyone else.

How can you get a good SWR if the plug is 30 ohms instead of 50?

 

Re: The SCR522 The aircraft restoration guys and wikipedia sure think we changed what we classify as UHF. Quote from a WW2 aircraft restoration site "The same frequencies, then called UHF, now are referred to VHF are used by air traffic control and civilian aircraft today." I'm sure google can track the site down.

 

All 3 covered 100-150 mhz At no time was it called UHF ANYONE who did is wrong ....

 

We generally hy-jack every thread here don't we? lol

 

Part of the swr problem is poor connectoes and coax PL-259's are ok at cb but not much higher ....

 

I'll bet you just got up......and I'm just going to bed!! Hope you are doing well...........I'm gone! (I hate those poor connecTOES!) LOL