willgrah
Member
Hey all, a quick question. I have a Tram 1170 5/8 over 1/2 collinear mag mount on my car now. Not a bad antenna except that it sways in the breeze a little too much for me. I would like to just take the 5/8 whip portion and put it in the loaded base eliminating the 1/2 wave whip and coil. I don't see a problem doing that (correct me if I am wrong) I just need to know where to measure from for the proper length of the 5/8 whip.
BTW this is used on GMRS, 465 mhz is what I use for my calculations. Thanks. Bill
Just to clarify, I know what the proper whip length is supposed to be for a 5/8 at that freq, I just don't know if I need to include the base in the mix of just cut the whip and go. The rod is 15" now but seems too long based on the lengths advertised by other manufacturers for a 5/8" base loaded whip. SWR's are 1.25:1.
BTW this is used on GMRS, 465 mhz is what I use for my calculations. Thanks. Bill
Just to clarify, I know what the proper whip length is supposed to be for a 5/8 at that freq, I just don't know if I need to include the base in the mix of just cut the whip and go. The rod is 15" now but seems too long based on the lengths advertised by other manufacturers for a 5/8" base loaded whip. SWR's are 1.25:1.
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