How To Make A Rf Choke

W5LZ

Crotchety Old Bounder

• #4

Two possibilities there. Aye, over driving the amplifier will crusade distortion and some unwanted RF. The other possibility is that your truck is just getting also much RF into it. That doesn't hateful it's 'bad' RF, just more than it tin handle. You could go to a LOT of trouble shielding the dash etc, or just turn the power down.
Are at that place other possible causes of what you are seeing? Sure, only the two above are the well-nigh likely.
- 'Doc

• #6

Thanks to both of you.
Edit: all three of you...

In your opinions, am I correct in final that setting the amp at a lower level than would cause the above problems is safety?

Thanks.

Last edited: Dec 10, 2012

W5LZ

Crotchety Quondam Bastard

• #11

Could it be cheap coax? Sure, but it's not very probable. It amounts to 'where' is that objectionable RF coming from. And, there are 2 sides to that, which ways it could be a problem with the device receiving the problem, the radio receiver y'all are hearing your voice over. So how about the 'where' thingy? What'south the strongest source of RF, the antenna. It's supposed to produce RF and so it really isn't the antenna's 'fault', right? How about the feed line? There'south ever some 'leakage', but in most cases it's seldom the source of the problem. Even with really 'leaky' coax the amount of 'leakage' isn't that much, peculiarly when compared with what's coming out of the antenna.
Howz all this going to help y'all 'cure' the problem? By making you consider that the about likely source for the problem isn't always what yous think it may be.
- 'Dr.

(OR! Park the matter in my driveway for a week and I'll fix it. You might wanna exit your debit card and pin number also. And if y'all're dumb enough to accept me upwards on that information technology'll surprise the poo-poo out of me.)

• #12

the cheap coax may/maynot cause your problem. but for a brusque slice id definately
get a good piece. id get LMR-195UF OR LMR240UF. the uf stands for ultra flex u will
want this a a mobile install.remember your antenna and coax are your most important
matter in a setup.which leads to nother question what kinda antenna?next is what
type of radio and microphone? make sure your radio has the audio limiter IN PLACE
if its non this allows the radio to over modulate and cause the amp to take all kinda
harmonics and splatter. this could be your problem. another is too much sound from
a power mic only in a big rig this is a no no.then i will assume yous use either a stock mic
or noise cancelling mic from here. back ii the radio i have same amp i use just a 1-two
watt dead key [carrier] y'all will need a ability meter for this, if your radio has a
variable id check this if not take information technology to your store and tell them what ya want. last
is too much mic proceeds now bold your only using a stock mic or racket cancelling mic
try turning your mic gain down a little betwixt i oclock and iii oclock. while all this will
not promise to solve your bug its definately were id start and make certain your not
overdriving your amp ,and go on your signal clean

• #15

For those that want to know:

Side mic 148gtl , Not clipped
636 mic with 5 pin plug, no adapter
The radio is tuned but clean.

I had some small progress today. I had a gamble to stop by Bob's CB in PA and they wanted to sell me new power cables, antenna mount, stud, and on.... Double shielded coax seemed the logical and easiest identify to start. so thats what I did and am now able to run the amp without affecting the dash, but non at 100w.
For reference, xi O'clock on the knob is about 100w and very clear. I'm able to run information technology at nine.5-10. The knob starts at virtually seven O'clock.

But this was with the cable passed through the vent window. I'chiliad sure everything could change once again once I feed it through the mirror and door.

yes the double shielded coax was the mode to get.bobs cb is a good identify ive bought alot
of stuff there.did ya put a rf choke on the NEW coax? also adjacent time ya there come across if
he has any ferrite chokes they go on your ability cords that might assistance

Source: https://www.worldwidedx.com/threads/creating-a-rf-choke-on-purpose.148058/

Posted by: connorsuman1999.blogspot.com

Share this post