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James Unit 198

Hi Animal I am one of the moderators on the euro radio co forum. A few have been rejected due to their range of IP address being used by Spammers. What problem did you have trying to register? Did you get activation email? I know you cannot get on if you give invalid information. If you answered all...

James Unit 198

New forum http://forum.euroradioco.net

James.

James Unit 198

In my first post and only post on this thread. I did ask if the VCO module had failed. If you are going skirt around the truth what is the point in asking the question in the first place. The part has failed or as not. I noted from Rick “Test Your Knowledge” thread’s that he gave start forward answe...

James Unit 198

Norm,
Did you have any luck find them as i have been looking for them for the pass 2 years.
I think you can still get them from President but they are pricey.
I know they are special they look like the one from VCR but the connects are in the wrong place.

James.

James Unit 198

Good advice keep with stock tran as long as you can.

James.

James Unit 198

This is a case of danger.

The diodes will need to be 8 amps or more and you will need a constant load or it will not work.
You will be best off getting the right power supply.

James.

James Unit 198

Has the VCO Modula IC2 failed? Has the loop mixer tran TR20 gone low gain? His the cap which go from the input side of the choke which connect to pin 9 of the pll and ground ok? can not read the ref no it looks link 1000u at 10v It is very hard to make out most of the part ref as the circuit diagram...

James Unit 198

If the pass regulator is drawing a lot of current you will not be able to modulate it. That why I ask you what the drop was across the pass regulator. You can try in injecting a 1khz tone in to the base of tr49 and or tr50 while in the AM TX mode. Is tr54 short if so this will stop your AM audio dea...

James Unit 198

speedracer6g, I am not trying to run you down. I am now intrigued as to how you get DC Current Gain (Hfe or beta) from a Mosfet, as IRF type Mosfet is just high-speed switch and was never designed for RF applications. Your B&K transistor tester may be you are reading drain current to drain sourc...

James Unit 198

Try setting up the PLL section as per http://www.cbtricks.com/radios/rci/rci_ ... ll_adj.htm

James.

James Unit 198

It would be a good idea to test the pass regulator with a load.
What is the drop across the pass regulator?

James.

James Unit 198

speedracer6g,
How do you analyzer a Mosfet and come up with the fact they having a higher gian than a RF driver or final bipolar.

I have my doubt that you really know the facts about IRF type Mosfets.

James.

James Unit 198

Rick is more often than not on the ball.

James.

James Unit 198

You will probably need a buffer amp as you may load the signal from the IC.
Just couple a 10 to 47pF cap an NPN transistor and make up a buffer amp.
This is the best way as you will get a better meter reading.

James.

James Unit 198

Did you sort out the main regulator? If you have not fixed the regulator fault then most of the self-biasing circuits in the receiver will be overloaded resulting in poor receiver performance and potential receiver oscillation. You can some times ear this as very low tones just before the second IF ...

James Unit 198

I now have 2 of them pick them up at radio Rally.

James.

James Unit 198

The voltage on the base tr501 is to low.
I would recheck the zener as the base and emitter of tr34 is incorrect.
You may not be aware that tr34 is an error amp and must be right.

James.

James Unit 198

I have been at my good old friend Rick’s workshop when I have seen him fix this problem a few times. Some of the radios have a bad solder joints on the front PCB where the twin pot are solder to and some have a bad connecter plug to the PCB. In most cases its usually just a cold solder joint. Its no...

James Unit 198

Jim you got the right guy on the job in Rick.

James Unit 198

Just got my radio back from Rick what a great job he as done.
It still hot but not anything like it did and the RX and TX audio no longer cut out.
Thanks Rick I how you a few pints at least.

James Unit 198

I am having problems with a new RCI2950DX mosfet radio. I have returned it to the dealer 3 times and still no better. The problem is after 15 minutes of use on FM it gets very hot and cutout the right side is so hot that you can not touch it. it must be a fire hazard. I think it is a very bad radio....

James Unit 198

Turner Super Sidekick or +3 desk mike must be in good working order.

James Unit 198

I have had 2 CRT SS3900 and both had the trouble with the clarifier. The clarifier is always a bit of and u need to keep adjusting has the radio warms up. My last one which sorted out by Rick is ok and has been for the past 2 years and is used every day mobile. I have known Rick for over 20 years. I...

James Unit 198

He has weak rx signal and not overload.
Check d145 and c44.

James Unit 198

Hear are some faulty parts i have had in the 3600 PLL section. C101, C102 O/C. R124 gone hi. Bad cap in L22. C225 turn in to a 1.3M resistor. Tr25 low gain. D30 near to short 830 ohm C108 O/C. I use the GRTS method for troubleshoot the PLL/VCO/Mixer circuit. This is the best method can usually find ...

James Unit 198

You other post you say you have 10 watts.
http://www.radiomods.co.nz/forum/viewtopic.php?t=1962
This is probably why you have not add an answer.
I think you need to have you power meter check as 10 watts is a lot to get from a UK FM rig even with a 1969.

James.

James Unit 198

I use the magnum international TRB-X2 it only has 3 wires to connect and takes about 5 min to fit the biggest problem was finding some where to put the echo control as it was my old cober 148 i removed the swr cal control. Magnum international also do one called big stadim sound with voice changer b...

James Unit 198

I destroyed 4 sets of drivers and finals before i got it sorted out by Rick.
I think he still gets on this forum from time to time.

James.

James Unit 198

That is the problem with this forum.

I posted some info on 19/03/08 and now it has gone.

Was there a problem with my post?

It would have been nice if the moderator or administrator had sent me a message explaining what the problem was.

Most forums keep a backup that can be restored.

James.

James Unit 198

The KL200 will work quit happy from 24 to 30 Mhz with on mods but do not put more than 8 watts input or it will not last. I have been using 200 for over 3 years and is still working well.

James.

James Unit 198

What is the point in putting the quote from the last message in to your message. this is pointless.

The guys which is trying to help you ask you some questions if you cannot answer them. You cannot expect to help you and maybe it is best to take the rig to someone who can repair for you.

James.

James Unit 198

Rick you was right the tran which is glued to the board was short circuit emitter to collector. I have replaced in with BC639 this should be ok has it is 80 volt at 1 amp.

James.

James Unit 198

I need a MCU PCB board for HR2510 or Lincoln with or with out processor.

James.

James Unit 198

Change the Varicap diode d32 to some think like BB809 and unhook one end of d33.

James.

James Unit 198

The bias as you call it is set ok. i got the info on the gate voltages from sam at magnum. it uses mosfets and not bipolar trans.

James.

James Unit 198

Magnum S9 Main PCB # 9821R20 CPU PCB # PCBX-0335R3B The rig has blown 2 set of finals and now on set # 3. I use the S9 on FM and SSB the power output is keep to 10 watts on FM and about 20 to 30 on SSB and is used as a home base rig. The SWR is 1.1 and the worst is 1.3. Has anyone else had this prob...

James Unit 198

This is the same as Cobra 146 GTL

James.

James Unit 198

The 148 GTL-DX was export radio some 30 years ago with 120 channels 26.515 to 27.855 AM/FM/SSB/CW and was not sold in the USA only in Europe. Must modern export radios are based on the 148 GTl-DX. You can find info at the links below http://www.geocities.com/open_channel/cobra148page.html http://www...

James Unit 198

Sounds like a nightmare but it look like you have the right guy helping you.

James Unit 198

I have had 3 sbe in the past and have all had bad soldering and duff caps.
When working they are good radios.

IMO the best is still the old Cobra 148 GTL-DX or SS360FM same radio.
I have new SS158EDX which is great but not as good as the old 148 GTL-DX.

James.

James Unit 198

captian radio
The ss158 his excellent radio.
The only 2 small problems fm is very flat and bit for carrier on lsb.
I have been in connect with Rick and he is going sort some mods for me but wont be until mid February has he is busy.
I will let you know how i get on.

James.

James Unit 198

This forum is used by people all over the world.

In which country and county? England UK; USA Virginai; Nebraska; Massachusetts; New York the list go on and on.

James.

James Unit 198

You certainly know your onions mate you was spot on. replace the 2 caps you told me to with mica ones put them on the copper side as the only ones i could get was 350 volts silver mica. set power to 10 watts on am and fm and 20 watts on ssb.

Thanks for all your help.

Happy Xmas.

James.

James Unit 198

you was right r241 was o/c and driver transistor has a leak from emitter to base. replaced r241 tr503 c195 but the power is still low at 6 watts am and 13 watts on ssb i have noted that the driver is getting very hot and i can not touch it as it is so hot. do you know what i need to do next?

James.

James Unit 198

President Jackson PCB #PB042 AC PLL MC145106 PA Final MFR455. This model has Automatic Squelch ASC. The output power is very low at 3 watts on AM and FM and about 7 watts on sideband. i have try adjust the power on AM with vr11 but this only turns the power down and max is 3 watts i have tested the ...

James Unit 198

do you know the cobra 200 gtl dx is no longer made and parts are hard to come by. i have been waiting 4 month for a channel switch and when i get 1 the the 200 will be up for sale. i have a new ss158edx that lot better than the 200.

James Unit 198

before i would have asking any question i would check that all the controls and switches was working a ok. the first post was not very good.

Radio has no audio on TX . 4 watt dead key , RX is fine , Mic is good .PA dose not work . what could this be ? has any one seen this problem before?

James Unit 198

I had problems like this when I converted my one. It was sorted out by Rick from Euro Radio Co. I know he comes on the forum from time to time.

James.

James Unit 198

Ramblingman. What you need to remember is people that repair and convert rigs for a living have a fixed price for there labour hear in the U.K it is about ?25 to 30 pounds per hour which is about $60. When you setup in repairing RF kit you need a lot of test gear that cost a lot money. I know there ...

James Unit 198

Try Ranger or Pacific Radio http://www.pacific.us.fm/pacific2005/store/index.html

James.

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

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Rick new forum

New forum....

Test your knowledge Uniden (President) Grant PC-409

Lincoln replacement switches

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Test your knowledge Uniden (President) Grant PC-409

RE: Turner Super Sidekick.

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Re: SS158EDX No echo, Fix.

RCI2950DX Running very hot ouch.

Turner Super Sidekick

That is the problem with this forum?

HR2510 MCU Board

Magnum S9 keeps blowing finals

President Jackson very low output power

Maycom EM-27 delights.