Batboard

I'm wondering if I'm crazy or not for thinking this, but I was trying to think of a good way that one could link two MSF5000's using tone control.

I'm wondering if I were to set up both stations for tone control, connect both stations to termination kits, and essentially put a small RICK between them that would logic switch the termination panels to send the right voltage levels to each station to indicate rx/tx respectivly.

I would think that this would be possible, but I'm not sure. I don't really want to really do any hardware modifications to the stations as they are now, I want to leave them as is. These both would be operating in a high rf noise environment, and I'm already going to be looking for some can's on the UHF side to help with the UHF's ears. The VHF station (that I might consider getting if this might work) woud simply be a simplex "port" into the UHF repeater.

I'm thinking that using this method might be the best way to have a clean connection between the two, but I don't know how sensitive the termination kits are to outside noise.

What do you guys think? I haven't done a lot with tone remotes. I understand their theories of operation, i'm just not sure if you could use them this way.

-Alex

If the two stations are going to be at the same physical location, the interconnection could be fairly straightforward. Motorola calls that an RA configuration. You wouldn't need to look at tone remote unless the stations are going to be located some distance apart and connected by leased line.

The next issue is the station model. The CXB stations have RA ability built in assuming they are equipped for wireline control [the TTRC card set].

You simply cross connect the 4-wire lines - RX on each station to the TX on the other. Then you cross connect the COR and PTT from each station's accessory connector [along with a common ground]

The rest is done in the RSS - setting the aux output to be COR and the aux input to be LINE PTT.

The CLB stations require more work. Motorola had a special interface board for this purpose. They may still be available but you might not want to spend what they ask!

If one or both of your stations is a CLB, post that and we will look at your options.

The UHF station is a CXB, and if I purchase a VHF one, I would go looking for one in the same.

I'll have to look into it. There might have to be some physical seperation involved due to space, but I'm not sure. It would be within the same building.

-Alex

Within the same building - say up to a few hundred feet - shouldn't be a problem, especially if you have a dedicated cable between locations.

Sometimes in these situations there are existing point to point cables for telephone equipment - what we call house pairs. They work OK but you want to be sure some telephone installer doesn't put 48 V across your 5 volt COR.

In today's world you may be able to use computer pre-wiring. Often buildings are wired from every room back to wiring closets with CAT5 or better. You can then cross-connect two drops at the frame and wind up with a point-to-point path.

If your wiring will be new - a single CAT5 network cable [8 conductor] will meet your needs.

I have/had plans to link two repeaters (VHF and UHF) using additional receivers in each one that RX the other repeater. I need to make sure that the correct receiver has priority in order to prevent loops. I also may need some voice delay boards to prevent clipping because of key-up delays. These repeaters are not located at the same site.

Nand.