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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.

First, check the tone squelch settings, and make sure you haven't messed them up in the programming. If you are hearing nothing at all on the weather channels, then it is likely a tone issue. If you still do hear the FM white noise with the squelch control down, then you have an antenna problem, or a bad receiver.

Also check for splitters in the house. Way back when i worked for Spectrum we would get calls with similar complaints. Alot of times we found splitters with 2 cables and 1 or empty ports with no terminations on them. As others said check the COAX. Anything less than RG6 shielded can cause the issue. My motor home would block on on multiple channels when my GMRS repeater (in the MH) would transmit. Found alot of connections (rg58) with crimps looking like they used a pair of pliers. I replaced all cable in the MH with RG6 quadshield and all my issues went away.

If his Fox News is on Cable channel 64, then you can't do anything about it. CATV Hyperband channel 64, no matter whether it's NTSC analog or ATSC QAM Digital, covers a 6MHz wide bandwidth between 462 and 468MHz. If you transmit anywhere in there, (GMRS) it will overload the TV or converter box. Likewise, if you are transmitting in the 70cm ham band, depending on what frequency you are using, you will wipe out Cable channel 59, 60, or 61. the 2-Meter ham band rides on the same band as Cable channel 18, and MURS will wipe out channel 19. NOTE: Cable channels above 14 are NOT the same frequencies as over-the-air TV channels above 14. Also note that with digital TV, the station can display whatever "virtual channel" they want you to see. Perhaps your local CBS affiliate still advertises themselves as "News-4", even though they switched to RF channel 27 over 19 years ago. Cable systems like to call digital channels much higher numbers such as "Hyper-tier 653" because it makes them sound bigger than they actually are - makes you think they have more channels out there that you just don't pay enough to get. Here is a list of actual frequencies vs. channel numbers for Standard, IRC, and HRC type cable systems, along with standard over-the-air broadcast. https://www.jneuhaus.com/fccindex/cablech.html The visual carrier frequency is shown in this chart. TV is transmitted in Vestigial Sideband mode, meaning a full carrier and upper sideband, but the lower sideband is rolled off 1MHz below the carrier. The lower edge of the channel is 1.25 MHz below the visual carrier and the upper edge is 4.75 MHz above the visual carrier.