I would have to agree with John. Also if the antenna has a set screw on the top part then maybe it could be shortened or lengthen. But first check the analysier. There have been a few of them that I have used and needed a different connector to measure different bands.
On Mon, May 27, 2024, 7:23 PM John Denison via BVARC <bvarc@bvarc.org> wrote: > Terry are you using the CAA-500 Comet analyzer? If so, then are you using > the N connector to test 70cm? The manual states that the UHF (SO-239) > connector is for everything 300MHz and below, and the N connector is for > 300 to 500 MHz. As it is, its like there is no antenna connected to the N > connector and thus your SWR is at infinity. > > 73 > John Denison > KD5YOU > > On 5/27/2024 6:33 PM, terry leatherland via BVARC wrote: > > I'm sure someone knows about Mobile antennas. Our friends at River Oaks > Car Stereo for sure. Anthony? > Here is my dilemma , or something I am doing wrong. > > I bought this antenna to mount on my new truck. I have a brand new Comet > analyzer. The antenna is hood lip mounted with a comet Hood mount. > When I analyze the raw antenna thru its one piece of coax, it is perfect > 1.5 or less on 2Meters @ 50ohms. > But when I dial up to 440 Mhz, the swr and Ohms is off the chart. > My radio is my old reliable Kenwood TMV71 of which I have 3 identical. > > Shouldn't I be able to just change the band knob to 430 and it read good > SWR? Do I have to find the resonant point of the upper band and start > trimming the top length down to 440 good swr? > I'm perplexed or doing something dumb. > > Terry > > [image: Inline image] > > > Terry Leatherland, K5PGF > 281-455-8090 > Sugar Land, Tx > > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing > listBVARC@bvarc.orghttp://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/ > > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/ >
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