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Author Topic: GATES MOD MONITOR  (Read 5231 times)
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flintstone mop
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« on: January 13, 2006, 08:15:59 PM »
Helllllo everyone,
Spring Time is over   Lips sealed

I have a nice Gates Modulation monitor that I cannot figure out the model number. Two nice big meters on the front panel, Carrier level and modulation meter and a control for the level and a switch for looking at pos and neg peaks, complete with flashing light Shocked

On the back looks like a Gates part number. Can someone interpret 994-6659-001?Huh
Thanks

Fred
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Fred KC4MOP
Jim, W5JO
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« Reply #1 on: January 13, 2006, 08:43:14 PM »
If it is about 8 inches tall and sort of a dirty brown color, it may be an AM 80.  Box is about 6 inches deep with a terminal strip and SO 239 on back with a switch.
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flintstone mop
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« Reply #2 on: January 14, 2006, 10:30:08 AM »
I'll take a digital pic and post, it's a pretty nice looking unit. Might from the middle 70's.
It is the color of Gates transmitters from the middle 70's before they turned into Harris.
Thanks
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Fred KC4MOP
flintstone mop
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« Reply #3 on: January 14, 2006, 11:55:38 AM »
This is a picture of the monitor.
Sorry for the crappy colors of the front .

Fred

* GateFron.jpg (13.66 KB, 320x240 - viewed 597 times.)

* GATES.jpg (18.06 KB, 320x240 - viewed 618 times.)
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Fred KC4MOP
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« Reply #4 on: January 14, 2006, 03:48:33 PM »
Don't recognize that one Mop.  It is probably the model before the AM 80.
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VE7 Kilohertz
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« Reply #5 on: January 31, 2006, 11:39:21 AM »
Hi Fred,

I had one of these a few years ago. I can't remember the "sales" model # but the 6659 is the main part of the part number. Are you looking for schematics or manual? I see it looks like it stilll has the original electrolytics, which should be replaced. Change them all as they are probably 30+ years old now.

I think this is a 60's vintage. I will look in my files-pics and try to locate a model # for you.

cheers

Paul
VE7KHz
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flintstone mop
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« Reply #6 on: January 31, 2006, 04:11:01 PM »
Hi Paul
Thanks for your info. I need the manual so I can understand the input circuit better. The carrier pot is fryed.

Fred
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Fred KC4MOP
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