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Re:NICOM STL PROBLEMS

Posted: Sat Sep 17, 2016 9:37 am
by RGORJANCE
I would be interested in hearing what you found in those Nicom units. I currently service two stations with those in use. Please tell us what you have seen fail. Ours are about 1.5 years old.

I believe there are several others in use in the group as well.

Fossil

Re: Good ole analog

Posted: Wed Sep 21, 2016 7:23 am
by level42
Pretty much three consistent failures on the Nicoms:

1. Power supplies. Usually either a cap or a voltage regulator.

2. Output device in power amp. They have used a few different ones over the years. Not much protection from VSWR or lightning. Either will cook em.

3. Bad solder joints. Some of these boards must have been soldered by first time students at a local tech school. No quality control.

Re: Good ole analog

Posted: Wed Sep 21, 2016 8:25 am
by RGORJANCE
Thanks for the detail. I kinda was thinking it would be caps in the p/s. Appreciate the tips.

Fossil

Re: Good ole analog

Posted: Sat Sep 24, 2016 6:33 am
by kkiddkkidd
level42 wrote: The Armstrong X-Link are my favorite of the current analog products.
Is it the X-Link that has a 2 and 4 channel discrete STL on a single STL freq?

Re: Good ole analog

Posted: Sat Sep 24, 2016 1:21 pm
by TPT
Not that I know of. My units consist of a simple analog TX/RCV pair I feed with a composite audio signal.

Re: Good ole analog

Posted: Sat Sep 24, 2016 7:55 pm
by Shane
Sounds like one of the late 90's Moseley products.

Re: Good ole analog

Posted: Sun Sep 25, 2016 5:15 am
by kkiddkkidd
level42 wrote:Pretty much three consistent failures on the Nicoms:

1. Power supplies. Usually either a cap or a voltage regulator.
2. Output device in power amp. They have used a few different ones over the years. Not much protection from VSWR or lightning. Either will cook em.
3. Bad solder joints. Some of these boards must have been soldered by first time students at a local tech school. No quality control.
I have one of the old 2ru tx's that has had the output device replaced a couple times and they now tell me that it is unobtainium. The last time I had it repaired, I seem to recal that they had to use a similar but not exact device and it would only make about 7 or 8 watts. That worked for a while but it will now only make about 2w. I have been using it as is for a loaner and it seems to be stable at that.

I also have a 2ru RX that won't lock on certain freqs. Anything that can be done for that?

Later,

Re: Good ole analog

Posted: Sun Sep 25, 2016 5:26 am
by kkiddkkidd
Shane wrote:Sounds like one of the late 90's Moseley products.
Very similar.

I just found what I was thinking of in Armstrong's online literature. It is the Armstrong DX series of 2 or 4ch encoder/decoders but I don't find a single reference to that model at any of the on-line dealers. Was it vaporware?