Predator 10k  | | 
12-01-2007, 03:36 PM
| | Member | | Join Date: Feb 2007 Location: Massachusetts
Posts: 50
| | Predator 10k Hello all you wonderful guru's of the CB world
i just got my 10k yesterday and it has a 17'' shaft i got it mounted at the top of my back rack on my pickup (can post pics if you want) im having problems matching it out the best i got was a 1.5 across all 40 it was with a different stinger that i didnt care about cause i cut a damn foot and a half out of it but than i went to cut more and now the match is way above 3, so my question to you is should I ground out my back rack from the antenna bracket??? Or should I move the whole antenna dow the rack seeing as how it has a 17'' shaft and just keep the coil above my roof or would the shaft be too close to the rack??? | 
12-01-2007, 09:18 PM
|  | Senior Member | | Join Date: Apr 2005
Posts: 3,417
| | ok , I see you have a 10K with problems on your end , Go to the 10K section and read some threads or put your own question in there , you can even write the guy at 10K , he is very helpful. Sometimes taking the time to read up , you can find answers to your questions , but hey ! I totally understand , we usually want are stuff to work yesterday. :P Good luck to you | 
12-01-2007, 11:34 PM
|  | Senior Member | | Join Date: Dec 2006 Location: RICHMOND VIRGINIA USA
Posts: 1,612
| | im no guru....im just a parrot... ^5 SK 
a 27 or 22 inch shaft is usually recomended for mounting the 10k behind the cab of a pickup to keep the bottom of the coil above the roof of the cab . is the bottom of your coil above the roof of the cab ? you had a 1.5 on all channels and kept cutting suggest you simply cut too much off . did you cut it more than 1 inch at a time ? they're is a few inches of play in the seating of the stinger to pull it back out some if it is a lil too short and then secureing it with the set screw . 1.5 swr is acceptable if your not running a amp .
if your coil is above the roof get a new stinger and be a lil more careful when cutting/tuning it . wilsons will fit it and theyre available at any cb store .
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12-02-2007, 08:04 AM
| | Supporting Member | | Join Date: Apr 2005 Location: Oklahoma
Posts: 3,075
| | To go one step further, there's nothing wrong with an SWR of 1.5:1, there's no practical difference between that and a 1:1. You'll never see a 1:1 on anything except by blind luck, then it'll change the first time a leaf wiggles.
Sounds like you sort of 'pushed' your luck a little too far when cutting that stinger. Lots more common than people would have you think. 
- 'Doc | 
12-02-2007, 06:54 PM
| | Member | | Join Date: May 2005 Location: Smithfield,RI
Posts: 56
| | 1.5 is a great match.I never get better than that with a mobile.You can spend alot time chasing down the perfect match and it will not make a difference. | 
12-02-2007, 10:10 PM
| | Senior Member | | Join Date: Feb 2007 Location: 187 out of Wisconsin
Posts: 793
| | Quote: |
Originally Posted by W5LZ To go one step further, there's nothing wrong with an SWR of 1.5:1, there's no practical difference between that and a 1:1. You'll never see a 1:1 on anything except by blind luck, then it'll change the first time a leaf wiggles.
Sounds like you sort of 'pushed' your luck a little too far when cutting that stinger. Lots more common than people would have you think. 
- 'Doc | just to comment IN SMALL STEPS there is a difference in 1.5 or 1.1
just to clear that up IN SMALL STEPS 95% is a difference from 100%..:P
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12-03-2007, 07:49 AM
| | Supporting Member | | Join Date: Apr 2005 Location: Oklahoma
Posts: 3,075
| | Assuming a 5% increase in efficiency;
At 5 watts that would mean .25 watt.
At 10 watts it would mean .5 watt.
At 100 watts it would mean 5 watts.
At 1000 watts it would mean 50 watts.
Hmm... So from 4.75 to 5 watts, or 9.5 to 10 watts, or 95 to 100 watts, or 950 to 1000 watts. I couldn't hear a difference, much less see a difference in meter readings at that kind'a 'gain'. Sort of doubt if anyone else could either. So why worry about it? A 100% efficiency is a great idea! It's also not ever going to be something obtainable. Sort of like those gas millage figures you see on new car stickers. Certainly possible under very strict and controlled conditions, but not in ordinary, everyday circumstances with 'normal' people driving. You know?
- 'Doc | 
12-03-2007, 08:13 PM
| | Member | | Join Date: Feb 2007 Location: Massachusetts
Posts: 50
| | thanks for the reply's guys
im gonna use the whip from my wilson 5k and cut that till i get it right that just cut the 10k stinger | 
12-12-2007, 08:05 PM
|  | Senior Member | | Join Date: Apr 2005 Location: Dallas,TX
Posts: 252
| | Just wondering...You said you had a swr of 1.5...Is that on channel 1 and 40? And what are you using for a swr meter?
The 17" shaft single coil 10K should tune lower than 1.5, as long as the antenna is "above" the roof line. (whole antenna, not just the coil) | 
12-15-2007, 05:56 AM
| | Member | | Join Date: Feb 2007 Location: Massachusetts
Posts: 50
| | Ya the 1.5 was 1-40
Im using a cheap @$$ ratshack meter thats old (lol) |  | | | Thread Tools | | | | Display Modes | Linear Mode |
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