Good afternoon you all, I just got an early Christmas president. My
friend dropped off a Radio Shack Pro 2011 scanner a couple of weeks
ago for me to take a look at and now he says for me to just keep it.
The problem seems to be in the liitle uP board. It will work a while
and then just go crazy. I thought maybe it was a power supply problem
but even running it from a battery doesnt help. Ive tried replacing
caps on the uP board with no help. I had really given up on it but I
would like to try one other thing now that its mine. IF I could bet a
schematic on the thing I would like to see if I could control the
radio from a PC port. I have done this before by bit banging data into
the PLL circuit.

If you have a schematic you could email me I would be thankful.

On Dec 21, 1:25*pm, JIMMIE wrote:
Good afternoon you all, I just got an early Christmas president. My
friend dropped off a Radio Shack Pro 2011 scanner *a couple of weeks
ago for me to take a look at and now he says for me to just keep it.
The problem seems to be in the liitle uP board. It will work a while
and then just go crazy. I thought maybe it was a power supply problem
but even running it from a battery doesnt help. Ive tried replacing
caps on the uP board with no help. I had really given up on it but I
would like to try one other thing now that its mine. IF I could bet a
schematic on the thing I would like to see if I could control the
radio from a PC port. I have done this before by bit banging data into
the PLL circuit.

If you have a schematic you could email me I would be thankful.

Hey I found the problem. The little board isnt a uP board after all. I
thought the big glob of epoxy on it was encapsulating a uP. Apparently
its just a keyboard matrix with the decoding done on the main board. I
found some really bad cold soder joints that connected the keypad to
the main board. When I pulled the wires loose they had no solder on
them at all. Called my friend and told him to come get it and he still
said it was mine. I would still like a schematic or sevice manual for
it. Does anyone know how old it is. Also I think GRE made the radio
and also sold the radio under their name. Does anyone know which
model that was.

Jimmie

Service manuals are hard to come by anymore but I'll bet this guy can
fix you right up!

http://www.qsl.net/ka2pyj/pro2011.htm

I have a pro 2096 I bought off ebay for $50.00 as a tech special
guaranteed to be DOA

I shiped it to rat shack and they returned it saying parts no longer
available now I'm at $84.00 and counting!

I found on fixya, a problem with the ribbon connections but the tech
said the 103 pin chip was shorted!!

I refuse to believe that as it was one of the first batch that could
be modified to no gap status!! ! Now what shall I do??

On Sat, 27 Dec 2008, joeturn wrote:

Date: Sat, 27 Dec 2008 08:37:46 -0800 (PST)
From: joeturn
Newsgroups: rec.radio.amateur.homebrew
Subject: Radio Shack Pro 2011 scanner schematic

Service manuals are hard to come by anymore but I'll bet this guy can
fix you right up!

http://www.qsl.net/ka2pyj/pro2011.htm

I have a pro 2096 I bought off ebay for $50.00 as a tech special
guaranteed to be DOA

I shiped it to rat shack and they returned it saying parts no longer
available now I'm at $84.00 and counting!

I found on fixya, a problem with the ribbon connections but the tech
said the 103 pin chip was shorted!!

I refuse to believe that as it was one of the first batch that could
be modified to no gap status!! ! Now what shall I do??

There are guys who will go to the limits to repair DOA gear.

Maybe some other guys here will encourage you with suggestions. My
suggestion is, unless there are some very unique technical specifications
that you really need, to cut your losses up to this point and buy
something that you have a high probability expectation will work, out of
the box, and has some warranty protection (which usually means they may
just give you a new device instead of fixing the old one).

I know someone who is working on a dead ham transceiver, all solid state
and major ricebox brand, who has already spent enormous numbers of hours
with little progress and with the full knowledge that most of the chips
and sub-assemblies are no longer available or supported by the company.

We have been in this "new" throw-away economy evern since chips started
coming out where the technology understandably must progress in a manner
that automatically makes obsolete the prior generation of technology for
the purpose of causing ownership of capabilities to be more expensive than
if the older technology were made repairable.

Throw aways:
Actually I saw that coming about 20 years ago with the works in a
drawer by magnovox.
I ordered a surface mount hearing kit from Ramsey!! Had to use a
toothpic and super glue the components into place before I could
solder them! Back then the flex monuted magnifier was saficient,
now ,it requires a jewlers loop to see them!!..
However GRE should have offered to fix mine as it was the GRE
400/500 .They never answered my email??
Oh well I'll catch someone who wants to tinker or find a junk one in a
pawn shop??

On Sat, 27 Dec 2008, joeturn wrote:

Date: Sat, 27 Dec 2008 13:43:21 -0800 (PST)
From: joeturn
Newsgroups: rec.radio.amateur.homebrew
Subject: Radio Shack Pro 2011 scanner schematic

Throw aways:
Actually I saw that coming about 20 years ago with the works in a
drawer by magnovox.
I ordered a surface mount hearing kit from Ramsey!! Had to use a
toothpic and super glue the components into place before I could
solder them! Back then the flex monuted magnifier was saficient,
now ,it requires a jewlers loop to see them!!..
However GRE should have offered to fix mine as it was the GRE
400/500 .They never answered my email??
Oh well I'll catch someone who wants to tinker or find a junk one in a
pawn shop??


Well, there has been a lot of useful technical progress but I am a little
bit bothered by this trend to _also_ (besides not being able to fix
anything because it is 'throw away") the trend to make stuff so that it
actually has to be fixed by bringing the unit in for some kind of
aftermarket repair, adjustment, etc., and it costs some money in addition
to the inconvienience.

Cell phone viruses, for example, are known and the stories say they are
already out there (one will drain your battery on you), and, so as we get
more web access via PDA-type devices, what do you do if your thing starts
acting up? Go to a URL and download a "fix" and if the virus fixes it so
you can 't do that, then you have to send in your whole thing with $100 or
so to have _them_ fix it? This is about what it's going to start taking soon.

On Dec 27, 11:37*am, joeturn wrote:
Service manuals are hard to come by anymore but I'll bet this guy can
fix you right up!

http://www.qsl.net/ka2pyj/pro2011.htm

I have a pro 2096 I bought off ebay for $50.00 as a tech special
guaranteed to be DOA

I shiped it to rat shack and they returned it saying parts no longer
available now I'm at $84.00 and counting!

I found on fixya, a problem with the ribbon connections but the tech
said the 103 pin chip was shorted!!

I refuse to believe that as it was one of the first batch that could
be modified to no gap status!! ! Now what shall I do??

Thanks but I tried him already , my email got bounced. That account no
longer exist.

Most of the frequency blocking is done iin the uP board. If this can
be bypassed using a PC interface you are in business.
Interfaces to replace the uP board have been built around a PIC but I
have almost zero experience with a PIC.




Jimmie

On Dec 27, 1:35*pm, Stray Dog wrote:
On Sat, 27 Dec 2008, joeturn wrote:
Date: Sat, 27 Dec 2008 08:37:46 -0800 (PST)
From: joeturn
Newsgroups: rec.radio.amateur.homebrew
Subject: Radio Shack Pro 2011 scanner schematic

Service manuals are hard to come by anymore but I'll bet this guy can
fix you right up!

http://www.qsl.net/ka2pyj/pro2011.htm

I have a pro 2096 I bought off ebay for $50.00 as a tech special
guaranteed to be DOA

I shiped it to rat shack and they returned it saying parts no longer
available now I'm at $84.00 and counting!

I found on fixya, a problem with the ribbon connections but the tech
said the 103 pin chip was shorted!!

I refuse to believe that as it was one of the first batch that could
be modified to no gap status!! ! Now what shall I do??

There are guys who will go to the limits to repair DOA gear.

Maybe some other guys here will encourage you with suggestions. My
suggestion is, unless there are some very unique technical specifications
that you really need, to cut your losses up to this point and buy
something that you have a high probability expectation will work, out of
the box, and has some warranty protection (which usually means they may
just give you a new device instead of fixing the old one).

I know someone who is working on a dead ham transceiver, all solid state
and major ricebox brand, who has already spent enormous numbers of hours
with little progress and with the full knowledge that most of the chips
and sub-assemblies are no longer available or supported by the company.

We have been in this "new" throw-away economy evern since chips started
coming out where the technology understandably must progress in a manner
that automatically makes obsolete the prior generation of technology for
the purpose of causing ownership of capabilities to be more expensive than
if the older technology were made repairable.- Hide quoted text -

- Show quoted text -

Things like the PRO 2011 are fun to repair. It was built before chip
componets.

Jimmie

Hey Jimmie! My Panasonic inverter microwave croaked. I got
a chance to replace the power supply! The transformer looks
just like a fancy TV flyback, and the entire board weighs
about 8 ounces. The supplies are about 50 bucks new. Panasonic
vented the ovens through the top, and the moist air flows around
the electronics on the side, causing many early failure modes.
Figured you'd be interested.

Pete

On Dec 29, 12:58*am, "Tio Pedro" wrote:
Hey Jimmie! *My Panasonic inverter microwave croaked. *I got
a chance to replace the power supply! *The transformer looks
just like a fancy TV flyback, and the entire board weighs
about 8 ounces. *The supplies are about 50 bucks new. Panasonic
vented the ovens through the top, and the moist air flows around
the electronics on the side, causing many early failure modes.
Figured you'd be interested.

Pete

Thanks Pete, I order one a couple of months ago to play with and found
another at the thrift store the other day. I havent had much of a
chance lately. I worked on main frame computer systems for over 20
years and now they put in a new system that is all PCs. You just
replace the box when it breaks. I have been going to school on that so
much lately I havent gotten back to my project. I do think that there
is a place for HVSPs in amateur radio, maybe not microwave oven
inverters but someone is going to come up with a good pwer supply at a
reasonable price. I invision a device that would mount in place of an
existing transformer and maybe sell for half the price of the
replacement transformer. Lately my thoughts have gone more towards
ways of modifying UPSs. The UPSs operate in a PWM switch mode to
convert high frequency chopped signal to 60hz. I figure if you could
modify the PWM data that is being used you could drive a step up
transformer for HV. One problem I have is finding data on how these
operate. It seems no one publishes a schematic.


Jimmie