Radioguy7268

Not without a lot of money on combiners and filtering. It is done in the commercial world but its definitely not cheap. You would be better off adding a second antenna with hardline for the GMRS repeater. 

You set Pin8 to PL/DPL - CSQ detect on the Repeater's RX (receiver) radio.  This is how you make sure that only intended transmissions (from your group's properly programmed mobile/portable units) will be received on your repeater's 467.xxx frequency.  The transmit radio is then being told to key up upon that receive decode action. There is no need for your Transmit radio to detect incoming PL/DPL.  It's function is to transmit - but you should still generate a PL tone or DPL code for the Transmit output.
Some people try to program the receive and transmit radios the same way  - with the idea that they'll be able to swap them around more quickly once the transmit radio burns up. IMHO that's the wrong move. My take would be to program each radio for it's intended use, and set it up properly the first time.  You can always save & store the codeplugs for later use to reprogram or re-purpose a unit via the Clone function.
If you take the time to set things up properly  - AND TURN DOWN THE TRANSMIT POWER - the repeater will live longer, users will be happier, and you will have more time to go about improving the system instead of thrashing around trying to figure out what broke this time.
Repeater-builder.com is an excellent resource for anyone trying to build, setup, or program their own repeater.

You set Pin8 to PL/DPL - CSQ detect on the Repeater's RX (receiver) radio.  This is how you make sure that only intended transmissions (from your group's properly programmed mobile/portable units) will be received on your repeater's 467.xxx frequency.  The transmit radio is then being told to key up upon that receive decode action. There is no need for your Transmit radio to detect incoming PL/DPL.  It's function is to transmit - but you should still generate a PL tone or DPL code for the Transmit output.
Some people try to program the receive and transmit radios the same way  - with the idea that they'll be able to swap them around more quickly once the transmit radio burns up. IMHO that's the wrong move. My take would be to program each radio for it's intended use, and set it up properly the first time.  You can always save & store the codeplugs for later use to reprogram or re-purpose a unit via the Clone function.
If you take the time to set things up properly  - AND TURN DOWN THE TRANSMIT POWER - the repeater will live longer, users will be happier, and you will have more time to go about improving the system instead of thrashing around trying to figure out what broke this time.
Repeater-builder.com is an excellent resource for anyone trying to build, setup, or program their own repeater.

You set Pin8 to PL/DPL - CSQ detect on the Repeater's RX (receiver) radio.  This is how you make sure that only intended transmissions (from your group's properly programmed mobile/portable units) will be received on your repeater's 467.xxx frequency.  The transmit radio is then being told to key up upon that receive decode action. There is no need for your Transmit radio to detect incoming PL/DPL.  It's function is to transmit - but you should still generate a PL tone or DPL code for the Transmit output.
Some people try to program the receive and transmit radios the same way  - with the idea that they'll be able to swap them around more quickly once the transmit radio burns up. IMHO that's the wrong move. My take would be to program each radio for it's intended use, and set it up properly the first time.  You can always save & store the codeplugs for later use to reprogram or re-purpose a unit via the Clone function.
If you take the time to set things up properly  - AND TURN DOWN THE TRANSMIT POWER - the repeater will live longer, users will be happier, and you will have more time to go about improving the system instead of thrashing around trying to figure out what broke this time.
Repeater-builder.com is an excellent resource for anyone trying to build, setup, or program their own repeater.

You set Pin8 to PL/DPL - CSQ detect on the Repeater's RX (receiver) radio.  This is how you make sure that only intended transmissions (from your group's properly programmed mobile/portable units) will be received on your repeater's 467.xxx frequency.  The transmit radio is then being told to key up upon that receive decode action. There is no need for your Transmit radio to detect incoming PL/DPL.  It's function is to transmit - but you should still generate a PL tone or DPL code for the Transmit output.
Some people try to program the receive and transmit radios the same way  - with the idea that they'll be able to swap them around more quickly once the transmit radio burns up. IMHO that's the wrong move. My take would be to program each radio for it's intended use, and set it up properly the first time.  You can always save & store the codeplugs for later use to reprogram or re-purpose a unit via the Clone function.
If you take the time to set things up properly  - AND TURN DOWN THE TRANSMIT POWER - the repeater will live longer, users will be happier, and you will have more time to go about improving the system instead of thrashing around trying to figure out what broke this time.
Repeater-builder.com is an excellent resource for anyone trying to build, setup, or program their own repeater.

They don't have to be Part 95 type-accepted to be legal to use on Part 95 Subpart E freqs. Part 95 allows the use of Part 90 type-accepted radio units on GMRS channels.

I think the Channel 19 was a truckers channel long before 40 channel radios were mainstream. So i dont think being at center of the band was the reason.

Sent from my SM-T350 using Tapatalk

Well,  First you should make sure that is what you want to do. From what you've said, it's possible that you're looking for a multi-tone panel to separate user groups on your repeater by PL tone.
Adding an external tone panel to your repeater is not quite at the level of simple, but it has been done, and there are panels (and cables) designed to work with the Vertex EVX-R70 repeaters (and it's cousin the Motorola XPR8400). There's probably some online instructions out there on Repeater-Builder or similar sites. I'd peg it as a project for intermediate with skills to advanced/experienced.
The inexpensive way for someone with experience would be to buy a good used tone panel (I've seen used Trident Raider panels go for less than $50 with free shipping on eBay) and find some online pinouts for crafting your own cable. You would also need some equipment to set deviation levels and repeat audio, and you would need to reprogram the repeater to function as a base with an external control panel.
Without knowing your skill set, patience, and equipment - it's kind of hard to give a recommendation. Trading out your repeater for another unit that already has a Multi-tone function built in (Kenwood TKR) might be an option.
 

You can certainly use an external controller & set it up like a community repeater with multiple PL or Tone groups.
If that's what you want, there are other Repeater options out there with that feature built in, but a $75 or $100 used external controller will do the job.  I doubt you would want to manually switch tone groups.

There are ways to do channel steering through the rear accessory connector - and programming the GPIO pins, but I don't think I've ever seen anyone doing it on the lower end repeaters.
As you discovered, there is no real reason to do anything more than 1 channel for most of us.
Other than that, it's just legacy from the original mobile radios that are inside the box - and someone decided that advertising a 16 channel repeater was more impressive than just a single channel.

I remember hearing an old timer story about the one time they got fined from the FCC - because they had a Part 22 transmitter that was BELOW the wattage specified on the license. The FCC had warned them, and they didn't take it seriously because... well, nobody ever heard of a fine for being below your allowed power. 
That story came about because we were brainstorming around at a dinner meeting during the early days of narrowbanding and refarming, and some of us saw the same opportunity for more available talkpaths in Part 22 if you did some creative channel splitting and re-use of offset frequencies. The old timer warned us that in Part 22, things didn't need to make sense but you did need to follow the letter of the law. Again, that was 20+ years ago and a different era with the FCC and enforcement actions.

During that FCC Auction 20+ years ago, I attended an FCC Seminar down in DC & got to sit in with a bunch of people talking with FCC staff attorneys regarding the Auction process. One of the things we learned was that the FCC was only allowed to auction spectrum if there was more than one competing application for the allocation.  That was the reason the attorneys always suggested that people checked the "all" button on their application, as they wanted to make sure that every market had a potential competing application. You did not need to bid on all the markets you expressed interest in, but without a competing application, the auction process could not legally proceed.
Not sure if it still works that way, or if the FCC convinced the legislature to amend the auction rules. You would think that the concept should be to put the spectrum to use - rather than to just maximize Federal revenue.
Google 1997 PCS auction defaults if you want to read up on some FCC comedy.

More than 20 years ago, I got involved in an FCC Auction & made an honest effort to get some VHF channels in my economic area. The economic area I was interested in went for over $2.5 million for what amounted to about 8 possible channel pairs.
Part 22 channels from back in the IMTS days were gold. Most of them around my area are being used for linked DMR wide area systems. There's even still some wide area Paging on the old VHF Part 22 channels. Not sure how much availability there would be if the FCC protected incumbent operations.

More than 20 years ago, I got involved in an FCC Auction & made an honest effort to get some VHF channels in my economic area. The economic area I was interested in went for over $2.5 million for what amounted to about 8 possible channel pairs.
Part 22 channels from back in the IMTS days were gold. Most of them around my area are being used for linked DMR wide area systems. There's even still some wide area Paging on the old VHF Part 22 channels. Not sure how much availability there would be if the FCC protected incumbent operations.

Or, spend $800 to $1000 and get a purpose built repeater with a decent receiver front end that won't desense, and cooling fans to boot.
Public Service announcement: your "50 watts" won't perform any better than a properly configured 10 watt repeater when you are talking back in with 5 watt portables. Especially if you're talking through a cheap compact duplexer that's probably rated at 65 or 70 dB isolation (and that's when it's properly tuned).

More than 20 years ago, I got involved in an FCC Auction & made an honest effort to get some VHF channels in my economic area. The economic area I was interested in went for over $2.5 million for what amounted to about 8 possible channel pairs.
Part 22 channels from back in the IMTS days were gold. Most of them around my area are being used for linked DMR wide area systems. There's even still some wide area Paging on the old VHF Part 22 channels. Not sure how much availability there would be if the FCC protected incumbent operations.

QFT!  Talk with a frequency Coordinator, tell them that you want to put up your own Private Carrier system for "Part 90 eligibles" and license your DMR system as FB6 repeaters. Yes, it will cost you more than $35 up front, but now you have the keys to your DMR kingdom, and you can DMR to your heart's content, because every user on your FB6/M06 system now runs under your fancy Private Carrier license. You can (but don't have to) even collect user fees for the use of your system.
 
 

That's more important than you think. Remember one of the functions of a duplexer is to "isolate" the RX and TX sections since they are both using the same antenna. A receiver can only tolerate a small level of signal before the AGC, automatic gain control, in the radio reduces the internal signal level to keep it within the operating range of the electronics. The gain can be reduced to the point were a weak signal is reduced to a level where the FM detector can't work. That's desense in action. As strange as it sounds some repeater owners discovered that REDUCING transmitter power improved the receiver sensitivity!
Why is that? Well consider the duplexer has a FIXED attenuation. Those cheap Chinese duplexers don't have a lot to begin with anyway. So if the transmitter power is increased the signal level feed into the receiver's front end increases too.  As I mentioned if it gets too high then the AGC kicks in big time and your receiver goes deaf. That's why higher power repeaters use duplexers with 100db or more isolation. They have to use it to keep the signal level into the receiver below the point were desense occurs.
Finally if the repeater is installed at a site with a bunch of other high power transmitters, which are in close proximity, all that power is trying to get into your repeater's receiver too. The duplexer has to keep all that crap out as well.

You get what you pay for. Some find out the hard way why something is so cheap.

"Public Service announcement: your "50 watts" won't perform any better than a properly configured 10 watt repeater when you are talking back in with 5 watt portables. Especially if you're talking through a cheap compact duplexer that's probably rated at 65 or 70 dB isolation (and that's when it's properly tuned)."
 
That's like the number 1 thing I try to get people to understand when they get into radio. Power out of the repeater has nothing to do with talk in range (if desense is out of the picture). 

Or, spend $800 to $1000 and get a purpose built repeater with a decent receiver front end that won't desense, and cooling fans to boot.
Public Service announcement: your "50 watts" won't perform any better than a properly configured 10 watt repeater when you are talking back in with 5 watt portables. Especially if you're talking through a cheap compact duplexer that's probably rated at 65 or 70 dB isolation (and that's when it's properly tuned).

Or, spend $800 to $1000 and get a purpose built repeater with a decent receiver front end that won't desense, and cooling fans to boot.
Public Service announcement: your "50 watts" won't perform any better than a properly configured 10 watt repeater when you are talking back in with 5 watt portables. Especially if you're talking through a cheap compact duplexer that's probably rated at 65 or 70 dB isolation (and that's when it's properly tuned).

Or, spend $800 to $1000 and get a purpose built repeater with a decent receiver front end that won't desense, and cooling fans to boot.
Public Service announcement: your "50 watts" won't perform any better than a properly configured 10 watt repeater when you are talking back in with 5 watt portables. Especially if you're talking through a cheap compact duplexer that's probably rated at 65 or 70 dB isolation (and that's when it's properly tuned).

Or, spend $800 to $1000 and get a purpose built repeater with a decent receiver front end that won't desense, and cooling fans to boot.
Public Service announcement: your "50 watts" won't perform any better than a properly configured 10 watt repeater when you are talking back in with 5 watt portables. Especially if you're talking through a cheap compact duplexer that's probably rated at 65 or 70 dB isolation (and that's when it's properly tuned).

I've still got my Navajo codebook from Windtalkers.