| Author |
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chainsaw
| | Posted on Thursday, October 04, 2001 - 3:43 am: | 
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i need some help with my new system as follows galaxy 99, roadking 56 mic,texas star 500,wilson 2000 trucker astron rs70m power supply and new 213 mil spec coax ok here goes i talked to several people in a 50 mile radius all said i was loud and proud putting a 9 on there s meter and talked to a guy in texas on lower channels im in georgia i have a very big rf problem on some channels i can make my own phone ring "cordless" all my tv,s go crazy and I come over my neighbors tv and radio the antenna is very temporary its on a ten foot metal pole "I live on a 60 foot hill" dont have a ground rod and wire hooked up would it help to have one also which brand of low pass filter should i use Ive heard they take away some major power from your system is it true and if I touch my lip to the metal sreen on the mic I get shocked any help would be great thanks guys keep up the forum |
Insider
| | Posted on Thursday, October 04, 2001 - 10:59 pm: |
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Getting shocked on the mic sounds like RF comming back down the feedline. Have you checked the VSWR of your antenna system?
As for the TVI (low pass filter) robbing your system of lots of power, I personally haven't encountered that. At most, I've seen the VSWR of the system with a filter in at 1.4, a loss of less than 4%.
A grounding line from the antenna should be used. In addition, you may consider running grounding lines from your amp and radio to earth.
Please be advised that I am not a tech. |
Insider
| | Posted on Thursday, October 04, 2001 - 11:32 pm: |
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Follow up to my other post.
Okay, you got me. I didn't read things that carefully. If you are using a mobile antenna for a base station, you will need to add ground plane to it--such as radials underneath the vertical element connected to the outer shield of the coax. |
Tech181
| | Posted on Thursday, October 04, 2001 - 11:51 pm: |
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chainsaw,
First of all you need to ground EVERYTHING. That includes the antenna system, and all the gear in your shack. Use a 6 AWG or better wire running from the ground of your antenna to a 8 foot solid copper rod pounded all the way into the ground.
You also need to ground the chassis of all your gear to a seperate ground. You can use sections of coax shield to connect the gear to a ground bar or something similar, and then to ground.
Low pass filters will help on the radio end, and high pass filters will help the television. Phones are a pain in the ass to deal with.
Also, check the SWR of your system like Insider said. You are probably getting zapped by excess RF coming back down the feedline. Grounding should help you.
Steve
Tech181
Tech181@copperelectronics.com |
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