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Re: Harris Gates 2, 2500 watt, one bad output module
To: Pubtech <pubtech@lists.pubtech.org>, CRTech <crtech@crtech.org>
Subject: Re: Harris Gates 2, 2500 watt, one bad output module
From: RADIO DOCTOR <lylehenry@fastmail.fm>
Date: Wed, 26 Jul 2017 22:13:30 -0700 (Pacific Daylight Time)
Cc: tech@michaelpatton.com
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References: <alpine.WNT.2.10.1707261617380.4232@Lyle-Dell-D630> <e068415c-877a-f68f-e26e-d7a396d6e1c1@michaelpatton.com> <CAGgA4+dnvy-_ntsqMQsXdfvzeDhy3Pz-D2jYXoOf0Or_fkCpeA@mail.gmail.com>
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I just got a photo of the name plate:

Model:  GATES TWO    12/16/99
Part number: 994-9203-002
Serial number:  MP01663000001
Frequency:  590 KHZ
Power Out: 2.75 / 0.2 KW 220 VAC 1 Phase 60 HZ

On Wed, 26 Jul 2017, Allen Fowler wrote:


Looking at the subject line of Lyle's post I think that station has one of
the Harris Gates 2.5 AM transmitters with the same PA boards as the earlier
SX series. Not one of the newer DAX transmitters.
 Did I miss something?


On Wed, Jul 26, 2017 at 7:14 PM, Michael Patton <tech@michaelpatton.com>

We aren't really setup to work on the DAX PA modules; so far we have not
seen the demand for repair that would justify the extensive test jig
required, and keeping a DAX-1 around as a test bed isn't economically
feasible, either.  Those modules talk to the controller serially, so it's
not just a matter of feeding them PDM and RF drive and the PS voltages,
like it is with almost all other PA modules.

If we start seeing more call for DAX PA repair, that may change.  If
someone has a DAX-1 that they want to sell for cheap - even one that's
badly damaged - I'd be very interested.  Until then, I must reluctantly
pass this off to GatesAir.

FYI, to get the TX to run w/o a PA module, you must put in its place a
shorting module, which GatesAir has and many stations keep on hand.

Mike Patton, Michael Patton & Associates, licensed Telecommunications
Equipment repair in-house, AM/FM transmitter retuning/rebuilding
in-house/on-site, AM DA design/build/install/proof work, other field work
225-752-4189 ofc     225-266-9745 cell     www.michaelpatton.com

On 7/26/2017 6:38 PM, RADIO DOCTOR wrote:

KTHO 590 near Reno, NV says they're at half power.  There are two power
modules that feed a combiner to make the 2500 watts.  One of the modules is
bad.  Gates Air asks big bucks for a new module, so he wants to get it
repaired.  But if he takes either module out, it won't come on the air at

Mike Patton, I suppose you can fix this if someone can explain how to
keep it on the air?

...Lyle, the FMeXtra guy

FMeXtra digital SCA systems - encoders and receivers
SCA/FM/FMeXtra radios: fixed & tunable-wood cases-nice sound
Sidekick SCA generators - 67/92kHz-checked and calibrated
  Lyle Henry, CPBE  THE RADIO DOCTOR  K9DKW  Los Angeles, CA
SCA Consultant:  Brazil, China, India, Mexico, Taiwan, SE Asia
       323-660-4690 Home/Office     213-880-4690 Mobile

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(wpio-fm <wpio@gate.net>, 27 Jul 2017 15:13:51 -0000)
References: Harris Gates 2, 2500 watt, one bad output module
(RADIO DOCTOR <lylehenry@fastmail.fm>, 26 Jul 2017 23:38:53 -0000)
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