astrotac rx over 5.8 ghz link

[cencom17]

we would like to try linking an astrotac rx to a astrotac comparator over a 5.8 ghz link using nxu2a's with motorola ptp400's with external 28db dish's. has anyone used this configuration and if so are their timing problems.this will be mixed mode.
'

thanks, paul

[George]

Can you detail the equipment a bit better?

The only thing I got was astrotac rx to astrotac comparator and the freq is 5.8 GHz using 28 db antennas...Other than that, what's a nxu2a and what's a ptp400?

Is the microwave full duplex? Or is it like RAD where it's half duplex and they make up for it in speed?

George

[cencom17]

yes the microwave is full duplex and the nxu2a is a ratheon/jps is an a to d and dto a converter to put analog audio to a phone line or a microwave t/r. the ptp400 is motorola's microwave 5.8ghz system.

[George]

You should not have a problem. Your method of interface to the microwave should be with an E&M interface.

Set your levels to some reasonable standard, you can use -16/+7 like the telephone company using standard transmission test sets or use a -10/-10 or -5/-5 or something like that if you want to be different.
Do a bandwidth sweep with your test sets and make sure your circuits are flat. I don't believe you want a slope on this or I don't know if your equipment has a method of setting a slope like with a Tellabs 4001 line amp.

It sounds like you have digital microwave with T1 level interface and channel banks. There is no reason why this should not work for you.

George

[Batwings21]

The nxu-2 is VOIP. There WILL be a delay in the audio, and you would have to have a way to delay the audio on the other rx's.I'm not sure that the astro tac compariitor can do this, I know th eJPS one can. We use some for a couple bases, but not in any tac systems yet.

[chpalmer]

Most dont like to talk about voip on an analog voting system... I cant imagine the trouble you could get into with an Astrotac system.

Some ptp's are available in a t-1 format I believe.