gortex2

Depends on what your looking for. I run the Larsen all band on all 4 of my 8500's. They sweep better on 800 than the MSI all band.  Most of the commercial antenna manufacturers make good antenna's. Larsen, Laird, PCTel all are decent.

This is why it is recommended "drilling the hole" 
G.

Depends on what your looking for. I run the Larsen all band on all 4 of my 8500's. They sweep better on 800 than the MSI all band.  Most of the commercial antenna manufacturers make good antenna's. Larsen, Laird, PCTel all are decent.

Depends on what your looking for. I run the Larsen all band on all 4 of my 8500's. They sweep better on 800 than the MSI all band.  Most of the commercial antenna manufacturers make good antenna's. Larsen, Laird, PCTel all are decent.

These are the ones I use. 
Pipe-Pipe Clamp
If you have a mobile not sure why you would want the repeater also. 

I'm sorry, but anyone who couldn't pick out the proper programming for a repeater (high/low vs. low/high) doesn't appear to be qualified to tune a duplexer.  I'd also be curious how they managed to tune it to the "wrong" frequencies if you just flipped the high & low sides.
 

A normal Motorola dealer isn't going to touch a piece of equipment that's @ 20 years past production & requires DOS programming. Especially if they didn't sell it.
As I recall - the i20 was really made by Instrument Associates (which later sold to Gaitronics?) for Motorola. I think you can access the programming through the GM300 software that you would normally use for programming your GR300 series desktop repeater.
There's probably some info over on Repeater-Builder or Batlabs that might help you.
The i20r was sold as an "on-site repeater controller" that did a limited amount of PL/DPL code sets (8 or 10?) and was able to control a simple GM300 or R1225 repeater. Not sure what repeater you're planning to use it with.
I seem to recall liking the i20r when it first came out, because you didn't have to mess around with programming it via a maze of DTMF codes (like the Zetron controllers).  Was much easier to work with on the bench for initial setup, but a pain if you had to drive out to a site in order to turn a user code on or off. I forget if the i20r allowed just one CWID, or had multiple call signs based on the PL/DPL code in use. Something tells me it was just one CWID.

So one 8 year old article and one 20 year old article....yup...garbage... Again my Opinion. But I guess we aren't allowed to differ than other online. 
There are alot of publications by the ARRL and many other organizations in the radio field. Each has a following and each is what the end user wants to read. If Amateur radio was respected in the areas I live more then it may be different but its a hobby to them. None are involved in county aspects nor have any interest in that. I guess maybe QSL to should just have articles on how to program your Baofeng and HotSpot as that seems to be the fad of the day for many hams. Linking repeaters via internet, hot spots and zello from a cell phone is not what I got into ham radio for. Where is the amateur's microwave guys to help link repeaters and put voters on a system ? Ghosts. Just buy a cheap hotspot and drop it on your fusion or Trbo repeater and walk away. 
 

The XPR7550 was heavily inspired by the Astro radios... that is why I like the XPR7550e so much... I used to like those old Astro radios... 
On a different note... Seems like PAC owns at least one of every Motorola radio model built to date... Is there a Motorola radio model you don't own?
impressive! 
G.

Those System Saber radios were awesome. I still see some in use in some parts of the country, especially California law enforcement. I myself still use a VHF Astro Saber Model 3 for some uses as well. Had to eventually upgrade to a Lithium Ion battery, which makes it slightly shorter now, and required a newer multi-chemistry charger. But still a very capable and useful radio. If mine were in UHF, they would be used for GMRS for sure. I gave two away to amateur radio type friends and now only have two myself. They were removed from a maritime environment, spares for use on motorized barges used to transport oil products along the West coast. The Saber radios do have excellent specifications for the time they were manufactured.

Most likely desence. Just because you hear the tail does not mean the signal is good enough to pass audio. Who tuned the duplexer ? 
 
You need to give us more info on the setup.
Repeater Model
Feedline type
Antenna Type
Antenna Height ? 
 

Most likely desence. Just because you hear the tail does not mean the signal is good enough to pass audio. Who tuned the duplexer ? 
 
You need to give us more info on the setup.
Repeater Model
Feedline type
Antenna Type
Antenna Height ? 
 

It is done in DOS as said if its truly the X9000. It requires a special cable to the RIB. Its been many years since I did one. 
Which head is on it ? Most X9000 came with the W9 Head with a plug from the harness. The plug on the harness should have a Orange and Green Wire along with 2 for speaker. Some were black with a stripe and should have a molex plug on it. 
Alot of good info HERE

That's right up there with people building cross-band repeaters between MURS and FRS. Then use a cheap Baofeng to transmit through it since it is a dual band radio. Likely the cross-band repeater was built using Baofengs with cross over cables, cheap duplexer and dual band antenna too.

The SURECOM needs to be connected to a 50 ohm dummy load to test RF Watt output. 

No pics of my first. It was a 4 channel Uniden crystal radio. 
One of these 2 are my grab and go radios....
 

I did a similar design in NY. All 3 repeaters were the same output, however all three used a different input PL. I called it a poor mans voting system. There are similar systems in public safety. Actually our SAR system started the same. Same TX/RX all over the area with different input PL tones. All TX was the same PL.
 
Really need more info as said. 

No pics of my first. It was a 4 channel Uniden crystal radio. 
One of these 2 are my grab and go radios....
 

My first GMRS radio...

My current GMRS radio... 

G.

You need a watt meter. They are like radios. Cheap China box to a good quality box. I prefer a Bird 43 but not everyone has one. There is a huge page on this HERE
Read the linked post. 

I'm betting if you select another operating mode the radio won't be part 95 compliant, at least till you put it back.

I posted this a few yrs ago.
https://forums.mygmrs.com/topic/252-cable-types-and-losses
 

LDF4-50A is standard 1/2" Hardline
LDF4-50A
AVA-50 is the 7/8" Hardline. Anything over 100' I run that. To be honest all my repeaters have 7/8" and some are only 50' up the tower. 
AVA-50

Antennafarm normally ships pretty quick. Don't think anything I have ordered took longer than a week. 

Your Motorola radio is using "Talkback Scan" 
In programming you define how long it will sit on that channel before it goes back to scan. Public Safety uses Priority Scan. Priority Scan goes to the Selected Channel regardless of the last transmission.