[Has anyone here made a simple repeater out of 2 Motorola GM300 radios?]

Anything you ever wanted to know about the Gm300’s can be found at 

 

https://www.repeater-builder.com/rbtip/

[Kerchunkkkkkkk]

23 hours ago, Sshannon said:

 My repeaters are XPR’s on my commercial pairs and my GMRS repeaters are Tait TB8100’s.  
I also have kenwood TKR’s and NXR’s on the stock pile and  the difference is that all the commercial gear call it hang time. 
 

 

[Kerchunkkkkkkk]

Ok, that’s in the subscriber radios , and wouldn’t be on the receive of a repeater, it would be a setting on the transmit. 
 

But even with that set , it only drops the PL or muting the receiver of the subscriber radio, if programmed to CTCSS/DPL  before the carrier drops to eliminate the squelch tail noise. But unless the signal is full quieting, will still exhibit noise.

When a repeater is programmed to not have a hang time, it’s exactly the same on the subscriber radio transmitting like simplex. When you un-key, that’s it, there is no signal coming back immediately  

 

 

 

[Kerchunkkkkkkk]

2 hours ago, marcspaz said:

 

Nope, I'm definitely talking about squelch tail and STE. You are referring to something different. But, what you are referring to could also contribute to a user not hearing the repeater when they release their key.

I'm looking through codeplugs for 4 of my repeaters, and none of them have a setting for " squelch tail"

[Duplexer Tuning]

You can use two repeaters , one duplexer with a combiner, but you have to keep the frequencies close together so everything falls within the pass/reject band of the duplexers. The duplexer tuning will have to be slightly staggered so you take a bit of performance hit, but if you don't have tower space for a dedicated RCV antenna and a rcv multicoupler with a pre-selector,  it could work.

The down side is the cost of a combiner. Even two channel hybrid combiners are salty used.
 

[Kerchunkkkkkkk]

33 minutes ago, gortex2 said:

I have my hang time set to 0 on all my repeaters except 1. The 1 repeater is set for 2 seconds hang time but no PL on the tail. Hopefully this year I can swap that repeater out also so none of them have any hang time. No need for it. In the old days with tubes you wanted the repeater to stay on the air in between transmissions. No need for it any longer. For SAR all my repeaters have 2 second hang time but no PL also. 

 

The only problem with no hang time is the kerchunking morons tend to keep doing it expecting to hear the tail. eventually they give up though.

 

[Kerchunkkkkkkk]

On 2/23/2024 at 7:00 PM, marcspaz said:

the repeater could be programed to not transmit a squelch tail.

Negative, What you are referring to is called the hang time.  That is the amount of time the transmit carrier is present after the station stops receiving an input signal.  This is done to keep the transmitter from constantly keying and un-keying from a loss of marginal received signal

There are options in higher grade repeaters to setup timing for reverse burst, or to stop the PL before the carrier drops to eliminate "squelch tail".

[How to attract more young people into the Amateur Radio Hobby]

"How to attract more young people into the Amateur Radio Hobby"
 

Ill say it, and this goes for many,   Stop being creepy.  

[Repeater requests, but no reply]

On 6/23/2023 at 2:20 PM, OffRoaderX said:

There may be other ways to get the repeater information such as the local ham/GMRS group or by scanning the input frequency with a radio that can scan for the tone, then connecting to the repeater and calling out/asking for permission, or just using it until someone tells you to not use it.

This is poor advice. You don’t jump on someone’s repeater unless you have permission to do so and you certainly don’t just use it until told otherwise. 
 

Some repeaters may still be leftovers from when businesses were licensed on those frequencies, and regardless,  at the end of the day, the repeaters are private property of the owners.  While the airwaves are not, the repeater or this method of using them is, and by using a repeater without permission is basically  unauthorized use of private property.  
 

This is the same as coming across someone’s yard or land, and just using it until you are told otherwise or thrown off.
 

Until you identify who’s repeater it is and make contact with the owner or responsible party, treat it as a closed repeater and stay off it.