The best vertical antenna that I have owned was a Comet GP series for 2 Meters, plenty of gain and built to take the weather with the connector 'inside' the support. The length question makes me think a mobile antenna on a 'ground plane' might be better for you, Paul. The owner of Radio City ( Previously known as Satellite City ) once advised me that for the K4000 motorized mount, those dual-band antennas which had matching wavelengths to the recommended ones would require less in terms of a 'metallic ground plane'. The Diamond site would suggest antennas with NMO mounts such as the SG-7500(x). Comet/Maldol/Diamond all seem to make this sort of thing, yet I would avoid the 'foldover' feature for your roof. The motorized mount requires regular tightenting, and antennas with foldover may not be good for your roof. The Larsen brand of mobile antennas seems to be very popular for less maintenance than the ones previously mentioned. I had no experience with dual-band Larsens. I have been a regular contributor to the tech forum on www qrz com on mobile and VHF/UHF. The 'expert' there seems to be K0BG, who hosts his own website regarding mobile installs. Just a few other thoughts: A horizontal yagi in the attic pointed at your favorite repeater might be better if it is over 25 miles away. QST had an article on Rayleigh Fading which explains some of the distance problems, yet there was a small math issue reviewed later- be sure to get the correction if you would provide it to others. I had a good signal with a Cushcraft yagi ( dual-band - approx. 4 elements on each ) in the attic even with snow and rain up North. I recommend a better cable, such as LMR-400 ( if the length exceeds 40 feet ) to avoid approx. 1/3 wasted power at UHF frequencies. There are many 'disguised' antennas which look like plumbing vents and the like. If you are going to penetrate the roof, look at the condition of the roof ( re-shingle soon? ) or consider using a soffit vent. Jon Livingston KB0MNM 73
----- Original Message ----- From: "Paul Noll via BVARC" <[email protected]> To: [email protected] Cc: "Paul Noll" <[email protected]> Sent: Thursday, August 10, 2017 11:53:10 PM Subject: [BVARC] 2 meter base antenna I need suggestions !!! I need a 2 meter home base vertical antenna. Not to long because of the dreaded HOA ! Was looking at the Hustler G6-270? I know it's a dual bander but it is supposed to get 6db gain on both bands, is 5/8 wave and is only 7.5 ft long. A little longer is ok. Would like to keep it a one piece if possible but not a necessity. Please, any suggestions will be considered !! Paul Noll KG5MHD Love your pets, they want and deserve it !!! _______________________________________________ BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Message delivered to [email protected]
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