The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

captian_radio

I have a SS158 EDX that does the same thing,I have found that some of the caps around the tuning cans are very sensitive to temperature change hot or cold very common for these radios and looks like not they are not of very good quality.
Bob

captian_radio

It all depends on how big a beam not beams you can install.A good way to get your feet wet with a beam is to start out small ( 3-4 element) and remember that when it comes to skip it doesn't matter if vert or horz as it changes constantly. If using it for local best to use vert.Most 3-4 element ante...

captian_radio

Please share what you found that was the problem with us.
Bob

captian_radio

Ok found the problem,I forgot that I had 2 fuses in the plus line,1 near the battery and 1 at the back of the amp plus the negative also,the 1 near the amp had very high resistance which acted as a thermistor cutting off the supply,and tnx for the info on the fuse,I did forget that it was even there...

captian_radio

Wheres all the amp techies at?

captian_radio

Well my DX250 quit today,symptoms are preamp works but when I run some RF into it it shuts off and will come back on in a min or 2.When I say shuts off I mean it is as if it was turned off almost like a reset.Fuses are good and connections to the battery are fine.Do these amps have a problem with th...

captian_radio

Interesting Flash because I have contacted Ranger and they stated that they don't carry any replacement crystals?
Bob

captian_radio

Tnx Rick, still watching the 158 postings with interest. Hey I will be waiting for the next new trouble shooting teaser when you start the fix for the famous 158 drifting problem!! lol
Bob

captian_radio

Rick wheres a good place to get replacement crystals? I have one that has stamped on it 10.24000,seems like it may have a tighter tolerance might try it sometime in mine.
Bob

captian_radio

Flash I have had the hi low button stick on me sometimes and the counter looks like its scanning,I would suspect the hi/low switch.
Bob

captian_radio

Not having that issue with my 158 other than it not staying on freq. when cold I will be watching to see what the outcome is.Rick I think that this new line of posting is great, makes one think.
Bob

captian_radio

Well here's what I did years ago with a 2510 when using it with a 6 meter transverter. I removed the shorting bar near the final and driver to get the output down to the milliwatt level to feed my 6 meter transverter everything worked fine with the exception of the power output being in the low mill...

captian_radio

Tnx for the info but I am not interested in getting more power at this time and the Rogerbirds site has a comprehensive review with mods etc, lots of good info there.Basically just going to use the 2510 as a back up for my other mobile rig.
Bob

captian_radio

Must not be any 2510 users out there, will swap out the VR and and see what happens.
Bob

captian_radio

Why bother wasting time with talk back, try putting a variable output control or something usefull like that.I had t/b on my Ranger 158EDX and disabled it .
Bob

captian_radio

Anyone,can't be that tough a question.
Bob

captian_radio

Had the same thing happen to me with a 139xlr and it was caused by a resistor near the final went bad and took out the final also.
Bob

captian_radio

I just got an old HR2510 and was checking it over to make sure it is ok.When checking the bias on the driver and final I notice that it is almost impossible to set the bias to 50ma on the driver, seems to be erratic, I cleaned up the VR but its still the same, the final is bang on just the driver se...

captian_radio

I don't see why not ,after all the little VR is just a pot.Try to keep the wiring away from the PLL etc, should work fine,if not its easy to put it back to the way it was.
Bob

captian_radio

I run a SS158 EDX with my Texas Star DX250,just turned down the carrier to 4 watts and cut back the ALC and it works great, I run it on all the time when in the car never turn it off.People don't know the difference,they always think its the new radio lol.
Bob

captian_radio

John all I did was to get a copy of the service manual form the ranger site, you can download it from there www.rangerusa.com and did a tune up using the manual ,read it carefully and take your time .Read read and read and it will show you which controls do what.As I said mine workd fine except for ...

captian_radio

John, my 158 receives just fine on ssb but I did do a little tune up on it shortly after I got it.You have to be careful and take your time while doing this.Maybe Rick is away fishing as I know he is a great fisherman,he sent me a pic of a very large silver carp he caught once.I would not give up on...

captian_radio

Try to be a bit more specific about the agc and ssb, is it that the agc is a bit fast? I have a ss158edx and my major complaint is that it drifts a lot between warm up and cold ,I should say more than a bit, a whole lot which is very annoying.The agc action is not as smooth as my old TRC451 which in...

captian_radio

Anyone have any info on this?
Bob

captian_radio

I saw a reference awhile ago by Rick about trapping the AGC.Rick if you read this could explain how this is done and what is the advantage to trying to do this.
Tnx Bob

captian_radio

I found the IC ,it was tucked away near the front of the radio,so the mod is done.
Bob

captian_radio

Does anyone have any info on how to do this mod? I see a couple of different mods on the net but not sure which one to try.
Tnx Bob

captian_radio

I always rely on an external SWR meter as I have found that most radios with built in SWR meters seem to be different.The only one I have found that is accurate is in my Yaesu FT 920,also it's SWR not SWR's standing wave ratio not ratios.When in doubt always use a good quality external SWR meter and...

captian_radio

JT,it could have something to do with the solar cycle having been at the bottom for the last couple of years,no solar activity,no skip,people lose interest.The new cycle has started so hopefully in the next year or so things should pick up.By the way I used to talk to some people in your area back i...

captian_radio

Tnx for the comments guys.So what are the input and output specs that you are using and what amperage is being drawn.
Bob

captian_radio

Tnx for the comments guys.So what are the input and output specs that you are using and what amperage is being drawn.
Bob

captian_radio

Tnx for the info,just turned up the pot,not much of a radio just taking a look for a friend of mine.
Bob

captian_radio

Does anyone know what the mic wiring is for the trc 481?I don,t have the original mic with the up down buttons and going to use just a regular realistic mic but not having any luck.
Tnx Bob

captian_radio

Each piece should be 6 feet long, I am assuming that the top whip was trimmed possibly for 10 meters which does not need to be done.Look for an old 6 foot whip with the proper threads and give it a try.
Bob

captian_radio

here,s the link http://www.marvelcommunications.com/
Bob

captian_radio

Does anyone have any info on some mods for the Maxon mcb 100 ,such as turning up the modulation and power a bit.I have searched and not been able to find any info on this radio.It is a 40 channel AM with 7 WX channels on it .
Tnx Bob

captian_radio

Try one of the new Z-180,s or Everdhart mag mount,I use one with my SS158EDX mobile and the Everdhart has good swr down on 26 mhz.its a bit longer than a Wilson 1000 at 68 inches long but for the price its hard to beat.
Bob

captian_radio

Well I have the M202 going again,tnx to those who offered advise,such as Rick in a pm and ramblingman,I over looked a small 3.3 ohm resistor which was connecting the driver output to the final,it looked ok but it was open I replaced it and bingo up and running.
Bob

captian_radio

Well I did disable the driver and still getting the same amount of output,with the driver still in place it does get a bit warm after a long key down.Checked the chokes and they are fine, it seems that the signal is not making it as far as the driver so could it be an issue somewhere in the pre driv...

captian_radio

I have an old Midland 202m that has no TX,when I received it it had no TX or RX,I replaced the audio ic and now have RX and the PA is working,I also replaced the driver and final which were also bad,I can hear a little TX in another receiver,sounds like it,s only working on the driver or predriver o...

captian_radio

I tried the echo bypass as well but I would also like to disable the talk back, shutting it off does not cancel it completely, can still here the roger beep a bit,I would like to unhook the TB completely,anyone know how?
Tnx Bob

captian_radio

I am thinking of getting one of these amps for the mobile,so has anyone ever used one and what are your opinions of this amp?
Tnx Bob

captian_radio

Yes thats correct, this is the best site that I have seen for excellent tech support.My thanks go out to all the support I have received in the past,I must say that Rick must be a very patient man because he has coached me through many problems and his knowledge is A+ Once again thanks to all who ha...

captian_radio

Hey Rick how you doing? To bad you didn't have a CD for the SS158EDX,I would be very interested it that.Happy new year my friend.
Bob

captian_radio

I would like to wish everyone a very Merry Christmas and a prosperous New Year and thanks to all who have helped me with my radio problems especially Rick for all his help.
Bob

captian_radio

James how do you like the 158 so far? I will be using mine as of Dec 25th and was wondering how its performing,selectivity,sensitivity,power etc. Also wondering if yours has the blue display and what it has for final Tr's or any problems you may have had.
Tnx Bob

captian_radio

Tnx for the reply Rick,I always look forward to your info.The trimmer caps that you mentioned are used just for aligning the tx freq, when I said that the audio sounded thin I didn't mean off freq,maybe what I should have said is that it does not seem to have as much fullness, sounds a little tinny ...

captian_radio

Does anyone know which 2 cans that need to be adjusted to change the freq. response for USB and LSB.Usb tx audio is fine but the LSB audio is a bit on the thin sounding side.I have looked on CB Tricks but it does not show any info.Anyone know what these adjustments are?
Tnx Bob

captian_radio

Ok the 139 is up and running again.Replaced the final and the resistor and off to the races again
Bob

captian_radio

Tnx for the link , I did find the link very useful although a block diagram would be nice to have on that site. I will replace the final later today and post my results.I also read some of the tech updates about the fix for this prob of the final going out, upon checking my radio I see that it alrea...

The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

Search found 84 matches

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Texas Star DX250

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Texas Star DX250

SS158 EDX 23mhz when turned on???

SS158 EDX 23mhz when turned on???

SS158 EDX 23mhz when turned on???

SS158 EDX 23mhz when turned on???

Test Your Knowledge Ranger Superstar 158EDX MOSFET model.

Subject: Test Your Knowledge (President Lincoln/HR2510).

HR2510 bias adjustment

AGC trapping

TRC 449 clarifier mod

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Great forum for tech support!!

Merry Christmas

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