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racecargo

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  1. Just a follow-up for anyone searching forums with a similar issue........ After verifying my meter capability, and a lengthy discussion with Midland's product engineer, we decided to move the antenna around and test multiple locations with just a c-clamp & magnet. Similar crappy readings almost anywhere on the headache rack or near the back glass, with slight improvements with elevation, but still not acceptable (still >3:1 swr, but down from 6:1). Moving rearward, to the toolbox showed huge improvements and eventually got everything <1.4:1. (still no idea why 462 & 467 would read so extremely different; I'd think they should have both been right or somewhat equally off) So not discounting marcspaz's comments, as I still don't know how long the antenna will work; but for now "location, location" seems to be the key with the MXTA26. -I'll try to edit this if/when marcspaz's prediction comes to fruition & it dies on me...and fyi: I already have a Tram on order.
  2. Thanks for the reply. I assumed going from 462 MHz to 467 MHz shouldn't have a large affect to SWR, so this let's me know something is actually wrong. I plan to take it by a shop this week (if they're open), to compare readings against a "better' meter; but sounds like I should research some antennas also. I'm not looking to put a 62" antenna on this vehicle; are your good Tram/Brownings in the 3ft range? Thanks again.
  3. Guys, I'm wondering if anyone knows if the SWR range readings should change when switching from simplex to repeater channels. I have a new install of a Midland MXT275 coupled to their MXTA26 (6dB whip antenna). These are supposedly "factory tuned", but since I was uncertain about the grounding of my truck's headache rack (where I attached the antenna), or the vertical install that close to the cab, I thought I'd throw an SWR Meter on it. Channel 1 & 22 initially showing roughly 2:1. Added a 10ga ground wire from the antenna bracket to the truck frame; now getting roughly 1.4:1 on both ends. (analog gauge with poorly incremented dial is why I'm saying roughly) For grins, I went up the the rP channels, recalibrated, & tried 19rp....meter jumped "into the red" at about 6:1. Question is.... Should I be seeing similar SWR on the 467MHz as the 462HMz frequencies? ...or is something terribly wrong with my set-up? FYI....I using a "cheap" Workman 104 meter, supposedly rated for 120 - 505 Mhz.
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