Search found 27 matches

by 13EL121
Sunday 11th Oct 2009, 4:45
Forum: CB Radio Repair and Troubleshooting
Topic: Uniden pc 122 xl drifting off frequency
Replies: 8
Views: 11525

Re: Uniden pc 122 xl drifting off frequency

Hi Joe! No problem at all. Yes, if a HAM gives you the report, it explains all :wink: . So tell him that you "only" use an old CB radio. You can align it when it's warm, but you will always have a small drift. Btw that's the reason to use the clarifier on SSB radios :lol: . The person in t...
by 13EL121
Saturday 10th Oct 2009, 21:26
Forum: CB Radio Repair and Troubleshooting
Topic: Uniden pc 122 xl drifting off frequency
Replies: 8
Views: 11525

Re: Uniden pc 122 xl drifting off frequency

Hi Joe! 200-300Hz are okay! That's normal for these transceivers. Often they drift a lot more. I have a "newer" Magnum S-9 which drifts nearly 500Hz or more and a Midland Alan87 (SS3900) which drifts nearly 800Hz during warm up. Here you can find the specification of your Uniden: http://ww...
by 13EL121
Saturday 10th Oct 2009, 10:32
Forum: CB Radio Repair and Troubleshooting
Topic: Uniden pc 122 xl drifting off frequency
Replies: 8
Views: 11525

Re: Uniden pc 122 xl drifting off frequency

250khz-300khz??? :shock: Wow, that is very much. 250-300Hz are normal. Send it to a rig doctor. He can check all oscillators. Without a good frequency counter it is very difficult to find the reason for this extreme drift. Is it sometimes "on frequency", maybe after switching on? Does it d...
by 13EL121
Friday 9th Oct 2009, 7:50
Forum: CB Radio Repair and Troubleshooting
Topic: Uniden pc 122 xl drifting off frequency
Replies: 8
Views: 11525

Re: Uniden pc 122 xl drifting off frequency

Hi!

How much does it drift? And in which time after switching on?
Does it drift on RX and TX same time?
73s!
by 13EL121
Friday 26th Jun 2009, 1:15
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 2000 GTL Sideband Issue.
Replies: 4
Views: 8185

Re: Cobra 2000 GTL Sideband Issue.

NightRanger3151 wrote:Maybe this will help ....
Hmmm...this looks nearly same like President Madison :!: :?:
by 13EL121
Monday 15th Jun 2009, 9:32
Forum: CB Radio Repair and Troubleshooting
Topic: President Lincoln no power after thunderstorm.
Replies: 5
Views: 7936

Re: President Lincoln no power after thunderstorm.

Hi John,

hmmm...hope that the rig doctor will find the problem. Maybe a small transistor is blown.
Good luck!
73s
Ralf
by 13EL121
Saturday 6th Jun 2009, 20:19
Forum: CB Radio Repair and Troubleshooting
Topic: midland alan 8001 plus display
Replies: 2
Views: 5862

Re: midland alan 8001 plus display

Hi! On the solder side is a trimmer. There can you adjust the freqency counter. Please adjust it in warm condition with a plastic tool. If you have an external counter, adjust it slightly in TX mode until it matches the right frequency. Maybe you have to align the complete radio in RX and TX. The su...
by 13EL121
Thursday 4th Jun 2009, 2:49
Forum: CB Radio Repair and Troubleshooting
Topic: ham international concorde 2
Replies: 7
Views: 11549

Re: ham international concorde 2

Maybe you can find some information here: http://www.geocities.com/open_channel/121d4x.html http://www.cbtricks.com/members/rick_euro_radio/cybernet_ptbm121d4x_Part1.pdf http://www.cbtricks.com/members/rick_euro_radio/cybernet_ptbm121d4x_Part2.pdf There are not many info in the www about this board....
by 13EL121
Thursday 4th Jun 2009, 2:13
Forum: CB Radio Repair and Troubleshooting
Topic: President Lincoln no power after thunderstorm.
Replies: 5
Views: 7936

Re: President Lincoln no power after thunderstorm.

Hi John,

i don't really know, but C116 is one of the most problems in such cases. This can't be a big problem, but a hidden one :doh: .

73s, Ralf
by 13EL121
Wednesday 3rd Jun 2009, 2:48
Forum: CB Radio Repair and Troubleshooting
Topic: ham international concorde 2
Replies: 7
Views: 11549

Re: ham international concorde 2

Good luck to reactivate the good old cybernet! :mrgreen:
by 13EL121
Wednesday 3rd Jun 2009, 2:39
Forum: CB Radio Repair and Troubleshooting
Topic: ranger 2950DX and delay on SSB?
Replies: 16
Views: 19753

Re: ranger 2950DX and delay on SSB?

Strange thing! I think that the microphone is mismatched to your radio. I would go to the dealer with radio & mic to fix the problem.
It is definetly not normal... :shock:
by 13EL121
Wednesday 3rd Jun 2009, 2:34
Forum: CB Radio Repair and Troubleshooting
Topic: President Lincoln no power after thunderstorm.
Replies: 5
Views: 7936

Re: President Lincoln no power after thunderstorm.

Hi!

Check C116 (150pf). This one sometimes blows when the radio is "tuned". :wink:

73,
Ralf
by 13EL121
Wednesday 3rd Jun 2009, 2:25
Forum: CB Radio Repair and Troubleshooting
Topic: ham international concorde 2
Replies: 7
Views: 11549

Re: ham international concorde 2

Hi again!

RV9 is a 5k b pot!

73, Ralf
by 13EL121
Wednesday 3rd Jun 2009, 2:16
Forum: CB Radio Repair and Troubleshooting
Topic: ham international concorde 2
Replies: 7
Views: 11549

Re: ham international concorde 2

Hi!
Here ist the shematic: http://ham-international.nuxit.net/Sche ... TOS012.pdf

Look here: http://malzev.tripod.com/cb-funk/ptbn121.htm

RV9 should be AGC (Automatic Gain Control), hope this helps :? .
by 13EL121
Thursday 28th May 2009, 2:59
Forum: CB Radio Repair and Troubleshooting
Topic: RCI 2950 non-DX, low output power, etc.
Replies: 2
Views: 5577

Re: RCI 2950 non-DX, low output power, etc.

Does the power comes back when the radio is cold? I would check the output transistors & driver at first step too.
by 13EL121
Thursday 28th May 2009, 2:51
Forum: CB Radio Repair and Troubleshooting
Topic: ranger 2950DX and delay on SSB?
Replies: 16
Views: 19753

Re: ranger 2950DX and delay on SSB?

Hi the only snag to soldering the resistor inside the radio is my radio is new and has tamper stickers on :( so the mic plug seemed the easiest way but i understand it could be fiddly.What about soldering the resistor inside the microphone as i have taken a look inside the teardrop and i can see th...
by 13EL121
Wednesday 27th May 2009, 20:12
Forum: CB Radio Repair and Troubleshooting
Topic: ranger 2950DX and delay on SSB?
Replies: 16
Views: 19753

Re: ranger 2950DX and delay on SSB?

Hi,
to do it in the radio is the best way. Other microphones schould not be affected with this mod. I've done this mod in some radios with no problems. I don't know at the moment which pin is ground. Better you look in the manual.
You can also test to choose a ground near the mic socket.
73s, Ralf
by 13EL121
Wednesday 27th May 2009, 2:24
Forum: CB Radio Repair and Troubleshooting
Topic: ranger 2950DX and delay on SSB?
Replies: 16
Views: 19753

Re: ranger 2950DX and delay on SSB?

Hi! Open the radio and solder a 1k resistor from the audio pin (pin1 if i remember) to ground (pin5). That must fix the problem. Be careful of middle pin6 - there is 12V! This can damage your radio. Or go to the local radio shop. Maybe they can do it for warranty if you explain the problem. 73s from...
by 13EL121
Monday 9th Mar 2009, 2:27
Forum: CB Radio Alignments
Topic: EPT3600-14b driver bias settings
Replies: 0
Views: 7391

EPT3600-14b driver bias settings

Hi guys! What is the correct bias setting for the driver in a EPT3600-14B board. I have a Midland Alan 8001 for repair, same board as SS-3900. The radio works fine but the driver bias was set to ~80mA. I found different service manuals. Some say the driver bias is 10mA, some say 50-75mA. In both set...
by 13EL121
Thursday 20th Nov 2008, 21:07
Forum: CB Radio Alignments
Topic: President Adams Radio Information needed.
Replies: 18
Views: 31411

President Adams Radio Information needed.

Hi David!
Sorry, i've no parts to sell. I have only one adams...
If i will find them i'll mail you!
73s, Ralf
by 13EL121
Wednesday 5th Nov 2008, 20:24
Forum: CB Radio Alignments
Topic: President Adams Radio Information needed.
Replies: 18
Views: 31411

are the CH19/ CH9 not black ones? The scan & normal button are orange.
by 13EL121
Sunday 5th Oct 2008, 20:42
Forum: What Equipment ?
Topic: Cobra 200 GTL DX - Revision by SN?
Replies: 1
Views: 5868

Does ist have Talkback? Then it could be a 3rd rev.
by 13EL121
Tuesday 3rd Jun 2008, 19:06
Forum: CB Radio Repair and Troubleshooting
Topic: Magnum S-9 runs very hot in AM/FM
Replies: 7
Views: 9534

I think it is better to mount an small CPU fan at the back of the heatsink :roll: .
Then the "Magnum" sounds even better :D
In normal CB use i regular the power output down to 10 watts. Then it is ok with the temperature.
73's, Ralf
by 13EL121
Tuesday 3rd Jun 2008, 18:55
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 200 GTL DX looses RF-Power
Replies: 0
Views: 3892

Cobra 200 GTL DX looses RF-Power

Hi, I've a problem with one of my Cobra 200 GTL DX. Due TX the RF power goes straight down from FM 70 watt to nearly 12 watt in HI mode. In LOW mode the power geos down from 30 watt to 8 watt. In SSB mode the max power is nearly the same. In this moments the SBB in LOW power mode the RF power ist hi...
by 13EL121
Tuesday 29th Apr 2008, 7:33
Forum: CB Radio Repair and Troubleshooting
Topic: Magnum S-9 runs very hot in AM/FM
Replies: 7
Views: 9534

Hi! Is there a difference in quality of the pills? when i go out with 10 watts only it is much better! But the 2230 should make more power i think... is the heatsink to small for the radio? The other version makes 45 watts on FM says the flyer of magnum.
by 13EL121
Sunday 27th Apr 2008, 10:14
Forum: CB Radio Repair and Troubleshooting
Topic: Magnum S-9 runs very hot in AM/FM
Replies: 7
Views: 9534

Magnum S-9 runs very hot in AM/FM

hi @ all! I'm using a Magnum S-9 Radio. The "problem" is, that it runs very warm by using FM or AM mode. The output is normal power of 20 watts. It's the latest variable version of the radio with fixed 20 watts in AM/FM at maximum power (dual finals 2230 MOSFET). In SSB mode there is no pr...
by 13EL121
Sunday 27th Apr 2008, 10:03
Forum: Shout Outs
Topic: Hello from Germany!
Replies: 0
Views: 4397

Hello from Germany!

Hi, my name ist Ralf, 29 years old, Callsign 13EL121, QTH Germany, City Duisburg.
Hope to meet some friends here who share my hobby DXing and CB-Radio.
Whish you an nice weekend... 73s!