How To: Use crossband repeat legally on your base station

It is necessary because if Moleculo TX's his call on 2m, his call is then TX on his base at 440.

The problem is that if I am listening to his comms, I cannot tell who is the control op of the repeater.

I may hear both parties plus the repeater and there is no way I could tell who is the control op of the repeater until Moldy's call comes out over 440 on his repeater;

otherwise, it is just an unidentified repeater...

C2 said:

It is necessary because if Moleculo TX's his call on 2m, his call is then TX on his base at 440.

Click to expand...

Oh ya, good idea. That would do it.

C2 said:

The problem is that if I am listening to his comms, I cannot tell who is the control op of the repeater.

I may hear both parties plus the repeater and there is no way I could tell who is the control op of the repeater until Moldy's call comes out over 440 on his repeater;

otherwise, it is just an unidentified repeater...

Click to expand...

Right. I see your concern.

As "Moldy" puts it though, no one but he and his select followers would even know that it is a reapeater. If all things are functioning correctly, no one would ever be able to tell unless they were tuned into all 3 frequencies. Then they might be able to piece together what was going on, but I think the only conclusion would be is, "Hey, this guy is clever".

Playing the "rules are sufficiently worded" for interpretation card and continue operations sounds like a safe bet. If there is an "auto-id" feature on the repeater station, no harm in using it right?

Mole gets clever points for figuring a way around the id for the 440.00 repeater (or being ballsy enough to just say it like it is). If you are confident that setup is working right and the repeater is not causing some unidentifiable interference, the ID from the HT on 440.00 sounds good.

I would take the easy way out though. Leave the repeater on low power for the 440 side and ID like C2 says on the 2m side. Then you don't need to have the second antenna or duplexer.

Huh. Pretty interesting stuff. I had no idea how or what this cross-band repeater business was until reading here. Turns out it is something I can definitely use.

I honestly mean no offence to Moleculo ("Moldy"); so perhaps I took my liberties too loosly?

Anyway...

I still feel the context of the thread places its content into question.

We have only TWO frequencies. One on 2m and one on 70cm. Anyone within range of the 70cm repeater or HT will likely be able to hear both parties on both 2m and 70cm simplex. It would be impossible to tell who is the control op of the repeater, unless specifically identified by some other means.

Think about it. At that point, it is an unidentified repeater. I remember that my HT, from indoors, was received 5/9 from over 2 miles away when set to 1/2 watt. (and if Mole is that close to his repeater, he could also just set his HT to 2m receive and run the 70cm repeater output into an isolated load)

I'm not saying Mole is not clever; he sure is a nice, straight forward and trustworthy fellow, but I believe, aside from some ambiguity in the rules, he is not technically legal.

To have a cross-band repeater (XBR) ID properly, it must transmit its ID out of both bands that it's transmitting on. A person simply saying his ID on his HT, transmitted to the XBR, which then the XBR transmits, does not satisfy the requirement.

Kenwood TMV-71a does ID every 10 mins alternating on the 2m and 440 side. Simple solution.

Put 1000' above the road and be good to go. That's what my friend did in W Tx on I10.. covers 60 miles one way and 90 the other (road tested)

Remote on/off with DTMF.