CB antennas: One or two?
#31
10-22-2006, 08:24 PM
Re: CB antennas: One or two?
Originally Posted by kc0iv
I would suggest you keep using this CB shop. He/she appears to be a rare person -- HONEST.
Using matching antennas with the CORRECT matching coax a dual will give slightly better performance if the antennas are spaced 1/4 wave-lenght apart. Creating ALL the right conditions to properly install dual antennas is NOT a easy task. While some think all it takes just adjusting the SWR and that is all. It really is a lot more than simply adjusting the SWR. Things like having the coax routed correctly and having a good ground are just a few of the many things that should be done to correctly install antennas. My feeling is it is not worth the added expense and work needed to use a duel antenna system. I would mount the antenna on the driver's side and use the closest needed lenght coax to reach from the antenna to the CB. Make sure you have a super ground. Tune it to the Lowest SWR and use it. I would use something in the range of a 4' - base loaded steel whip for an antenna. However Lockheed Martin conducted a test to see how different antenna configurations affected the transmission patterns, and they say that co-phased is the "best for highway". I use a single wilson 2000 w/ 18" shaft on the right side so it transmits strongest across the median. 
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"Do you really wanna read a whole book written by a pothead? 500 pages on why if you put a hat and glasses on a dog it looks like he could drive a truck." "Some people are against drunk driving, and I call those people "the cops." But you know, sometimes, you've just got no choice; those kids gotta get to school. " Dave Attell
#32
10-22-2006, 11:44 PM
Originally Posted by downsouthdriver
I have a CB question and figure I would piggyback on the thread rather than start another one. I hope no one minds. My question is how common is it for a truck to come with a CB? And if it doesn't will it at least have a spot for one and who installs it? Also what does it run for i to be installed?
Thanks. -paul
#33
10-23-2006, 01:59 AM
Originally Posted by nrvsreck
Oh! It's simple! Wow, thanks man! That clears it all up then! :roll:
Sorry! I gotta be smarta** from time to time! Can't resist! But, how exactly is it "simple"? It does have a SWR switch and meter. How on earth do I calibrate it? The manual really doesn't say much. 1. Set channel to center frequency (19). 2. Set foward/reverse switch to foward. 3. Key mike. 4. Adjust SWR Cal. to mark on scale. 5. Release key. 6. Set forward/reverse switch to reverse. 7. Key mike. 8. Read SWR on scale. 9. Unkey mike. To determine bandwidth (A) Set channel to 1. (B) Perform steps 2-9. (C) Set channel to 40. (D) Perform steps 2-9. Hope this helps. kc0iv
#34
10-23-2006, 02:45 AM
Re: CB antennas: One or two?
Originally Posted by Windwalker
With 2 antennas, you can not match the impedance of the coax to the output of the radio. That means "line loss". Why do you suppose so many of those guys have to have their radios PEAKED AND TUNED? They have to overcome the line-loss.
To overcome mis-matched when using twin antennes you use RG-59 coax. Sold as matching matching cable. Example: Firestik - K9A Sold by: http://www.walcottcb.com/coax-cable-...9_143_118.html One warning DON'T try to use standard RG-59 it has a solid center and will break when used for CB use. As far as "PEAKED AND TUNED" for the most part is a waste of money. What I've seem is most don't really make that much difference. Most shops don't have the equipment to properly tune a CB. kc0iv
#35
10-23-2006, 03:30 AM
Originally Posted by Windwalker
Originally Posted by dk132
Gods country :lol: Thats down here in Texas. No ice or snow here.
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"You can all go to Hell. I'm going to Texas." - Davy Crockett
#37
10-23-2006, 04:02 AM
Re: CB antennas: One or two?
Originally Posted by kc0iv
As far as "PEAKED AND TUNED" for the most part is a waste of money. What I've seem is most don't really make that much difference. Most shops don't have the equipment to properly tune a CB.
Most CB shops are modern-day versions of snake oil peddlers. The only 3 I use to peak and tune up my radios are: -Bob's CB Strattanville, PA I-80 exit 70 -Walcott CB Walcott, IA I-80 exit 284 -Clay's CB Gordon, TX I-20 exit 370 I save money by buying radios here on the internet by going to: www.copper.com www.gijoesradioelectronics.com www.premiere-electronics.net Walcott has terrible prices on radios but does a fantastic job of peaking and tuning.
__________________
"Do you really wanna read a whole book written by a pothead? 500 pages on why if you put a hat and glasses on a dog it looks like he could drive a truck." "Some people are against drunk driving, and I call those people "the cops." But you know, sometimes, you've just got no choice; those kids gotta get to school. " Dave Attell
#38
10-23-2006, 07:19 AM
my otr trucks body is shaved of everything it can be including antennas, I use a tiny antenna on the back of the cab and it does its job just fine for a few miles, i`ve got 2 firesticks on my wifes local truck since my bro in law thought they`d look cool and he was my driver :roll: :lol:
#40
10-23-2006, 11:29 AM
It was 50 this mornig when I woke up currently 67
aahhhhhhhhhhh. Feels great Beats the 100+ days we had this summer :twisted:
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"You can all go to Hell. I'm going to Texas." - Davy Crockett |
