| Author |
Message |
    
Keithinatlanta
Advanced Member
Username: Keithinatlanta
Post Number: 507
Registered: 3-2003
| | Posted on Friday, March 11, 2005 - 5:32 pm: | 
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I put a new radio in an older International Cab Over, (remember those?). anyway, as it turns out, the mirror mounts are aluminum, not metal. How do I get around this. do I ground the antenna mount to the chassis of the truck? If so, where, and with what? The antenna is a Wilson Silver Load 4" with the tunable tip at the top. Thank you in advance. |
Vtwinn
Junior Member
Username: Vtwinn
Post Number: 32
Registered: 8-2004
| | Posted on Friday, March 11, 2005 - 6:41 pm: |
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On a new style mack ch model I had to run a ground wire from the mount to the frame, I just used small clips around the rain lip and ran the wire across the top of the door and down the back of the cab and grounded it to a bolt that wasnt painted on the frame. the newer Ch MACKS have aluminum mirror arms aswell |
Tech808
Moderator
Username: Tech808
Post Number: 5189
Registered: 8-2002
| | Posted on Friday, March 11, 2005 - 6:46 pm: |
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Keith,
YES, you run a ground wire from the mirror mount direct to the frame to ground it.
I also suggest you go Direct to the batteries for your power to the radio or radio & amp.
Hope this helps,
Lon
Tech808
CEF808
N9OSN |
Karatebutcher
Senior Member
Username: Karatebutcher
Post Number: 1906
Registered: 7-2002
| | Posted on Friday, March 11, 2005 - 7:17 pm: |
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Sorry Keith Im am not that smart kb |
Mech
Member
Username: Mech
Post Number: 57
Registered: 4-2003
| | Posted on Friday, March 11, 2005 - 8:16 pm: |
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Keith is this a 9700 or 9800 Cab Over? If so send me a Pm and I can help. |
Tech237
Moderator
Username: Tech237
Post Number: 140
Registered: 4-2004
| | Posted on Saturday, March 12, 2005 - 10:31 am: |
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I'd run a ground wire from the mirror mounts too. Funny though I always thought that aluminium was a metal... |
Larryb
New member
Username: Larryb
Post Number: 4
Registered: 2-2004
| | Posted on Saturday, March 12, 2005 - 12:13 pm: |
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Aluminum is metal and a conductor.As long as there are no plastic washers at the pivot points of the mirror you should not have any ground problems with that truck.The newer trucks that use fiberglass doors do have a lot of ground problems. |
Keithinatlanta
Advanced Member
Username: Keithinatlanta
Post Number: 512
Registered: 3-2003
| | Posted on Saturday, March 19, 2005 - 5:05 pm: |
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Well guys, guess what! I changed the coax out and wala: it worked. Had to move tip up 1/8" and swr's are practically nil on channel 20, with 1.2 to 1 on channel 40 and 1.5 to 1 on channel 1.
I just had a feeling the new coax was not right, so got another piece of new coax, and now the truck driver is a happy camper!! Thanks for all the advice.
Keith in Atlanta
CEF 150 |
Keithinatlanta
Advanced Member
Username: Keithinatlanta
Post Number: 513
Registered: 3-2003
| | Posted on Saturday, March 19, 2005 - 5:07 pm: |
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Lon, yall might make something out of me yet!
You Reckon? KB, you used to live here, so don't say nothing about you reckon! Ya here? Ha!
I bet KB doesn't even read this area. Maybe somebody should tip him off.
Keith |
