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TN-Tom · 01-07-2010, 01:39 PM

Update - I pulled the antenna down. I checked all the ground wires. I kept the antenna on a short piece of PVC and it still wouldn't tune. The best I could get was 4.2 SWR by manually tuning. I called Yaesu. They said that I should get rid of the PVC - period!!! He (Ron) said to use metal pipe and attach the antenna to the ladder. Then, ground the ladder to the chassis. Ron said that the antenna is looking for a ground PLANE and can't see it because of the PVC. I know that there is a small piece of metal plate that is the backer to the ladder on the roof and behind all the ladder connections. Having an RV and getting this antenna to play is a different bag of worms than a car/van/suv. More as it happens.

01-07-2010, 01:39 PM	#15
TN-Tom Retired/Senior Member Join Date: Jun 2009 Location: Pleasant Hill, TN Posts: 9	ATAS 120 won't tune Update - I pulled the antenna down. I checked all the ground wires. I kept the antenna on a short piece of PVC and it still wouldn't tune. The best I could get was 4.2 SWR by manually tuning. I called Yaesu. They said that I should get rid of the PVC - period!!! He (Ron) said to use metal pipe and attach the antenna to the ladder. Then, ground the ladder to the chassis. Ron said that the antenna is looking for a ground PLANE and can't see it because of the PVC. I know that there is a small piece of metal plate that is the backer to the ladder on the roof and behind all the ladder connections. Having an RV and getting this antenna to play is a different bag of worms than a car/van/suv. More as it happens.