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Tin it first. Problem solved.

It's the streaming degrading the quality, not an issue with P25 or DMR. I've heard a DMR system I use over an internet stream, and it was no where near the quality delivered to my radio. Streamers are mostly using consumer grade scanners and PCs to provide the feed, not necessarily of high...

I use the Arrow and an HT. Always seem to hit it just fine.

Don't expect the above PHL freqs to be used for EWR traffic. The existing N90 freqs will be remoted to PHL.

Talking to the RADAR controllers.

125.025 is one of the East arrival freqs to DFW.

How did DMR side mes up the analog side of your repeaters? All three on the same pole?

Option 3. They abandon it, realizing it's becoming a UHF version of 27mHz and beyond their ability control.

Simultaneous.

It uses both time slots, repeating TS1 on to TS 2 and vis versa.

A good quality 1/4 wave with a thick whip will give you a usaeable match on 70cm ham and GMRS. Comtelco, Laird, Larsen, or other quality commercial grade at 1/4 wave will give you about 100mhz of useable performace. Caveat>> Properly mounted over a flat ground plane.

They are under positive control by the ATC centers. In your case, Seattle and Vancouver. Try 125.1 and 134.95 for Seattle. Vancouver 134.4, 125.95, and maybe a few others here. Vancouver (CZVR) (British Columbia) Scanner Frequencies and Radio Frequency Reference

The 878 also will not need any modification for MARS/CAP. It's my understanding CAP is going P25.

Flight Check. Probably checking a ground navigation system for accuracy. I've been on those to check ILS, TACAN and GCA accuracy.

If you are only going to receive, OK, but, every compromise antenna I've ever come across ended up in the scrap metal bin. Radio isn't a place for form over function.

Space Shuttle count? "700 miles downrange" call and I was hearing them on a handheld.

Laird, Larsen, PCtel, EMwave, Comtelco. Google will bring up multiple vendors.

repeaterbook.com

Bottom dollar mentality. These services should have diverse back up paths.

And GMRS is going the same way.