Daisy Chain RT97L

[Shield80]

Has anyone tried to Daisy Chain two RT97L repeaters together as described on the Retevis web site? If so what settings did you use in the software? 

[OffRoaderX]

1 minute ago, Shield80 said:

as described on the Retevis web site?

Can you provide a link to this description?

[LeoG]

https://www.retevis.com/products/25w-portable-rt97l-dual-daisy-chaining-repeater?srsltid=AfmBOoqaP81EZD5UCS-Aq0JdALo4gAj3TX5dGPSacv3UlR2TZa6hv5SA

[tweiss3]

Interesting concept. Not exactly sure how it's accomplished with a single duplexer though, unless both sides (462&467) are full RXTX units. Either way, talk about long squelch tails and lag.

[LeoG]

467t/462r > 467r/462t > 462r/467t > 467r/462t

So one radio needs to be in talk around mode.  You would need a 3rd repeater to make it normal.

[SteveShannon]

Just now, LeoG said:

467t/462r > 467r/462t > 462r/467t > 467r/462t

So one radio needs to be in talk around mode.  You would need a 3rd repeater to make it normal.

The problem is that it results in an infinite loop, going right back to the first repeater. 

[OffRoaderX]

35 minutes ago, LeoG said:

https://www.retevis.com/products/25w-portable-rt97l-dual-daisy-chaining-repeater?srsltid=AfmBOoqaP81EZD5UCS-Aq0JdALo4gAj3TX5dGPSacv3UlR2TZa6hv5SA

That page does not come up for me..

But lets also take a moment to remember that Retevis also posted on their website and on Youtube, a video showing/proving that you can add their 25W external linear amplifier to the original RT97 and it will then output 25 watts.. They even showed a power-test on the video to prove it..
..... Until a big GMRS youtuber came along and called them out by pointing out that it would output more power but it will not be able to RECEIVE anything because the amp is placed after the duplexer....and if you placed the amp before the internal duplexer that was rated for 5W, it would destroy it...  Then they deleted everything....

[LeoG]

Maybe one of these might get through your browser protection.

 

https://www.google.com/search?client=firefox-b-1-e&q=retevis+daisy+chain+rt97l

[LeoG]

7 minutes ago, SteveShannon said:

The problem is that it results in an infinite loop, going right back to the first repeater. 

They are probably using more than one channel.  Jump one on 600 jump 2 on 625 and no loop.

They state you name your frequency and they program it.  You don't have the option to change it.

[mb523]

Here is the image they provide on the product page showing the channel pairs used. They basically suggest using both the 600 and 725 repeater pairs as a means of setting this up, repeating to and from 600 and 725. 

 

 

[SteveShannon]

45 minutes ago, mb523 said:

Here is the image they provide on the product page showing the channel pairs used. They basically suggest using both the 600 and 725 repeater pairs as a means of setting this up, repeating to and from 600 and 725. 

 

 

Thanks, that’s very helpful. So each repeater is capable of receiving on two different frequencies and repeating on one. Interesting. I learned something new today. I’d like to hear from someone who actually has tried it. 

[OffRoaderX]

32 minutes ago, SteveShannon said:

I learned something new today. I’d like to hear from someone who actually has tried it. 

Me too... I HAD two brand new RT97L's that I could have used to test this.. but I gave them both away.. Now i'm kicking myself and I wish I was not so kind, unselfish and loving toward my fellow-man... 
Never again!

[WSGL775]

49 minutes ago, OffRoaderX said:

Me too... I HAD two brand new RT97L's that I could have used to test this.. but I gave them both away.. Now i'm kicking myself and I wish I was not so kind, unselfish and loving toward my fellow-man... 
Never again!

I don't believe it!

[WRTC928]

3 hours ago, OffRoaderX said:

Me too... I HAD two brand new RT97L's that I could have used to test this.. but I gave them both away.. Now i'm kicking myself and I wish I was not so kind, unselfish and loving toward my fellow-man... 
Never again!

I doubt you could do it with two off-the-shelf RT97Ls since they can only listen on one frequency at a time. If I understand the setup, each one has to monitor two frequencies simultaneously. It's a pretty cool setup, though.

[WRUU653]

3 hours ago, OffRoaderX said:

Me too... I HAD two brand new RT97L's that I could have used to test this.. but I gave them both away.. Now i'm kicking myself and I wish I was not so kind, unselfish and loving toward my fellow-man... 
Never again!

Since it looks like Retevis has to set this up before shipping and is irreversible I bet a major YouTube guy like yourself could get them to send you a pair. 

[WRUU653]

… and yeah, this is a new idea to me at least. Very interesting.  

[WRTC928]

So, here's a silly question, just because this got me thinking...

It's technically possible to transmit on one "primary" frequency and receive on another. For example, you transmit on 462.55000 and receive on 462.57500 while your friend's radio is setup the "reverse" way. Is there anything in the rules which prohibits it? If there is, I didn't see it. TBH, I can't think of a reason why I'd want to; it's just a thought exercise.

[SteveShannon]

6 minutes ago, WRTC928 said:

So, here's a silly question, just because this got me thinking...

It's technically possible to transmit on one "primary" frequency and receive on another. For example, you transmit on 462.55000 and receive on 462.57500 while your friend's radio is setup the "reverse" way. Is there anything in the rules which prohibits it? If there is, I didn't see it. TBH, I can't think of a reason why I'd want to; it's just a thought exercise.

Not at all. In amateur radio it’s not terribly unusual to work split like that. 

[WRTC928]

1 minute ago, SteveShannon said:

Not at all. In amateur radio it’s not terribly unusual to work split like that. 

Yes, I know, but GMRS operates by somewhat different rules and serves a different purpose. I didn't see it mentioned anywhere, but I could have missed it. I'd be surprised if GMRS radios would even let you program it in, although ham radios on GMRS channels could probably do it.

[WRUU653]

2 minutes ago, WRTC928 said:

So, here's a silly question, just because this got me thinking...

It's technically possible to transmit on one "primary" frequency and receive on another. For example, you transmit on 462.55000 and receive on 462.57500 while your friend's radio is setup the "reverse" way. Is there anything in the rules which prohibits it? If there is, I didn't see it. TBH, I can't think of a reason why I'd want to; it's just a thought exercise.

I was asking myself the same question and have been reading the rules and so far I don’t see a problem. It’s not simplex, it’s through repeaters. I could see a situation where HT One is hearing both from HT Two through both repeaters and from say a third HT only going through the first repeater. I don’t think I’d want to do this but I’m with you on the thought exercise.

Mc Escher drawing only with radios?

[LeoG]

I have the RT97S and it's easy enough to program them to receive and transmit on different frequencies.

But the reverse setup of receiving on low and transmitting on high would need a differently tuned duplexer.  I guess you could just reverse the cables on the low and high sides on one of the repeaters.