Some great information about coax lengths and swr

[BOOTY MONSTER]

"but when running a 102 behind cab on bed rail and running coax in multiples , swr is way out of spec. "

so your reading probally went up because of reflection from the cab and you were already using coax that was a multiple of a electrical half wavelength ? correct ?



"now i resonated my coax (rg-8x ) vf ".78 to 27.200 giving me a coax length of 28 ft 2.250 in. for a full wave in length netting me a true 1.3;1 swr "

so you changed to another section of coax that was one full electrical wavelength and your reading got better ?
is it possible one of the coax sections has been damaged or that a 259 needs some attention ?


"so in laymens terms yes adjusting length of coax can change the caricaturization of a antenna system in a mobile installation in regards to a 102 whip, "

i'll be sticking with coax length not changing the tuning of a antenna , just what a meter reads .


....

[Mr.5150cbrn]

"but when running a 102 behind cab on bed rail and running coax in multiples , swr is way out of spec. "

so your reading probally went up because of reflection from the cab and you were already using coax that was a multiple of a electrical half wavelength ? correct ?
well its not exactly behind cab . 10 in. to side of cab and 10 in. rearward of cab , bed is a commercial utility bed box
original coax length 18ftwhen ant. was mounted on top of cab



"now i resonated my coax (rg-8x ) vf ".78 to 27.200 giving me a coax length of 28 ft 2.250 in. for a full wave in length netting me a true 1.3;1 swr "

so you changed to another section of coax that was one full electrical wavelength and your reading got better ? actually added section /s to come up with a full wave length as using 3/4 wave length gave undesirable results
is it possible one of the coax sections has been damaged or that a 259 needs some attention ?
no as i thoroughly inspected the coax and pl-259's


"so in laymens terms yes adjusting length of coax can change the caricaturization of a antenna system in a mobile installation in regards to a 102 whip, "

i'll be sticking with coax length not changing the tuning of a antenna , just what a meter reads .
thats your opinion and like wise your entitled to your opinion , but it doesnt change the fact , that it dispels your theories or hypothesis. - using a simple swr bridge in conjunction with a analyzer and a 50 ohm dummy load shows a different side of the story


....

and i did this with my own ability without using another link to disprove another's result!

[BOOTY MONSTER]

18 ft of coax is a physical half wavelength , not a electrical half wavelength .
you had 36 ohms and went to 40 ohms .

you still didn't change any thing at the antenna , changing the length of the coax changed what the meter/259 was seeing to display it's readings .


believe what you want ............

[doughboy]

In the case of the steel whip they are normally about 36 to 40 ohms at resonace but some cheap equipment probably wont play well with that so yes most people adjust their coax to show the equipment the load it wants most radio stations antennas run as low as 28 ohms at resonance so they just run a large matching network they lose some power through the match but the antenna performs much better because is resonant

[Mr.5150cbrn]

18 ft of coax is a physical half wavelength , not a electrical half wavelength .
you had 36 ohms and went to 40 ohms .

you still didn't change any thing at the antenna , changing the length of the coax changed what the meter/259 was seeing to display it's readings .


believe what you want ............

oh its all understood , but booty
# 1. ya dont have to be a dick about it!
#2. go lick your self !

it wasnt about believing anything , i was just stating my findings .
in response of you getting discombobulated on every forum known on the world wide web.

by the way , booty did you tell everyone here , how you cried on the phone to lonewolf - 4 to five times a day
because you tried to TROLL some members and got asshurt from the flames from HELL !

now its time to knock it off!
keep it in the appropiate areas , or keep it to your self