Emperor TS-5010 mods...
Jay
Hello Tom: I also ran across a Emporer TS-5010, and bought the service
manual. Yes it does seem to have a slight AGC problem, and it does drift
after being turned on. But I can live with these little problems. The
AGC problem, I have a old Motorola external speaker that has a 25 ohm
audio pot and a GE-47 light bulb, that is wired into the speaker
circuit, which helps this weak/strong stations audio to equal out on
SSB, I think it's is called a Sonic Cushion. I have used this Sonic
Cushion on a lot of different radio's, and it sure helps on SSB
recption.
I haven't seen any web sites on mods and such. But the service manual
has this address and phone number on it:
(The service manual has a lower portion of the front page cut out, and a
address and phone number taped on it from the back of the front page
that reads:)
Real World Electronics, Inc.
159th & I-94 - 2nd Floor
South Holland, IL 60473
(708) 333-5683
Let me know what you find out? The Service Manual costs 29.95 from Bills
CB & 2way Radio Service at http://www.bills2way.com The manual is a
little pricey, and isn't written all that great. The manual doesn't have
a written circuit description, and only shows the typical test set ups
as if you had all the test equipment in the world. Typical hand waving
engineering from behind a desk, with a copy of company rules on the
wall. But it does have a great fold out schematic. My HR2510 schematic,
I had to enlarge from a copy machine in seperat pieces and tape
together, it doesn't look right but its kind of readable. The price you
pay for being a super CB'er.
I think the Emperor TS-5010 is a great little radio. Just needs a few
helping mods to make to run on all eight cyclenders, Ten-4.
Jay at jay...@ptw.com
YaesuTom wrote:
>
> I just bought a 5010 and I was wondering if there is a way to get the AGC to
> work better. I have to turn the volume up to hear weak stations on AM and
> SSB, but then a strong station keys up and it's very loud! My HR-2510 wasn't
> as bad as this radio...
>
> The inside of this radio looks almost identical to the 2510, but it doesn't
> work as good as the 2510. When I first turn the 5010 on at room tempature,
> it's about 300hz off-frequency. I have to let it sit for 20-30 minutes before
> it drifts back on...my 2510 wasn't nearly as bad as that.
>
> Is there any web pages with lots of mods for the 5010 out there?
>
> yaes...@aol.com
> http://members.aol.com/yaesutom
The CB Guy
I've seen these problems too with this rig, however it's still the
next best thing to a 2510...
Lin Vaughan
Did not "book mark" the site but type go to Yahoo and type in hr2510 mods.
Then go to Rogerbirds site.
YaesuTom <yaes...@aol.com> wrote in article
<19971108033...@ladder02.news.aol.com>...
Jay
l...@cbcintl.com wrote:
>
> yaes...@aol.com (YaesuTom) wrote:
>
> >I just bought a 5010 and I was wondering if there is a way to get the AGC to
> > work better. I have to turn the volume up to hear weak stations on AM and
> > SSB, but then a strong station keys up and it's very loud! My HR-2510 wasn't
> > as bad as this radio...
>
> Some of the Time Constant values around the AGC circuit are off. We
> pointed this out about 10 years ago in the Uniden "export" models.
> TechStar apparently did fix a couple values, but I see from the TS5010
> schematic that a few are still off:
>
> 1. Change R170 (150K) to a 270K.
> 2. Change R172 (1.5K) to a 3.9K.
> 3. Replace C140 & C141 with a single 47uF electrolytic. Note for some
> strange reason they used TWO 10uF in series here, so you will need to
> jumper the new cap. to the proper holes: the (+) to the hole going to
> D123/R172, and the (-) going to the R171/R170/D119 hole.
>
> These parts are all located along one side of the NJM2902 AGC/Squelch
> chip.
>
> These values will change the attack and delay times of the AGC circuit
> and should minimize the audio distortion on strong signals.
Hello Lou: Thanks for the help here, I will give it a try. The help
here is greatly appericated. Thanks and 73's.
Jay at jay...@ptw.com
l...@cbcintl.com
James Scouten
l...@cbcintl.com wrote in message <346ac3d5...@news.goodnet.com>...
I may not be recieving all of the discussion on this this topic but could
someone tell me what AGC is I have a 5010 and was wondering what this would
do to the radio.
james Scouten
Roderick
>Hello Lou: Thanks for the help here, I will give it a try. The help
>here is greatly appericated. Thanks and 73's.
>
>Jay at jay...@ptw.com
I too thank you (Lou) for the info, like to know your reaction to the mod
too Jay...thanks