Search found 125 matches
- Wednesday 28th Jan 2009, 5:08
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Cobra 148 GTL-DX Frequency Problem
Just an update Dave, I got hold of some adders advertised as 'new old stock' I know, I know........................ I should know better :roll: Anyway, when they arrived, the pins were so rusty they just snapped off when I handled them :doh: The remainder, which initially stayed intact, then blew aw...
- Tuesday 27th Jan 2009, 6:22
- Forum: CB Radio Repair and Troubleshooting
- Topic: Rick new forum
- Replies: 4
- Views: 6934
Re: Rick new forum
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 al...
- Monday 26th Jan 2009, 18:47
- Forum: CB Radio Repair and Troubleshooting
- Topic: Rick new forum
- Replies: 4
- Views: 6934
Rick new forum
Tried to register a couple of times without success & gave up.
- Sunday 25th Jan 2009, 21:40
- Forum: CB Radio General
- Topic: Irf520 mosfet question
- Replies: 4
- Views: 9658
Irf520 mosfet question
Factory recommendations are there for a reason. If you exceed these parameters then don't expect your finals to last as long as they would in normal service. You're also likely increase the risk of IMD, degrade the signal to noise ratio, etc, etc I haven't looked up the factory recommendations but y...
- Sunday 25th Jan 2009, 5:38
- Forum: CB Radio General
- Topic: Irf520 mosfet question
- Replies: 4
- Views: 9658
Irf520 mosfet question
Set it to factory settings.
- Tuesday 20th Jan 2009, 8:05
- Forum: CB Radio General
- Topic: Anyone used/got a Superstar dm-452 mic?
- Replies: 5
- Views: 11047
Re: Anyone used/got a Superstar dm-452 mic?
I've got 3 DM452 mikes and they are all very good even with different names on them. I've never had a bad report on one yet. Dave. As Dave said. I never had a bad report on mine either - but the physio-therapist bills were criminal!!! :-s They're not the most ergonomic-shaped microphone & it he...
- Friday 16th Jan 2009, 20:00
- Forum: CB Radio General
- Topic: Opinions on the Astatic minuteman 2 please
- Replies: 2
- Views: 5850
Re: Opinions on the Astatic minuteman 2 please
As the title indicates, what's the audio quality like on the "minuteman 2". It will be paired with a Superstar 3900el. Thanks in advance. I believe it's got the same ceramic element as the D104M6B & the 575-M6, therefore it will be nice & loud but unsuitable for mobile use as it w...
- Thursday 15th Jan 2009, 5:03
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Cobra 148 GTL-DX Frequency Problem
Will do Dave.
Do I need to take any anti-static/heat precautions with these adders???
Do I need to take any anti-static/heat precautions with these adders???
- Thursday 15th Jan 2009, 3:38
- Forum: CB Antenna Systems
- Topic: interested in beams ??
- Replies: 9
- Views: 16126
Re: interested in beams ??
HELLO, ok i have been using an antron 99 on a 50 foot push up poll, i am very interested in a set of beams but i don't know where to start, im going to use a RCI 2980WX, can anybody tell me what the best beams would be, any advice would be helpful, thanks. If you're still considering a beam, make s...
- Wednesday 14th Jan 2009, 20:29
- Forum: CB Antenna Systems
- Topic: interested in beams ??
- Replies: 9
- Views: 16126
Re: interested in beams ??
It's spelt 'intimidated' - get yourself a dictionaryWARLORD136 wrote:dude, i fear no man so don't feel like you have intimadated me
- Wednesday 14th Jan 2009, 6:22
- Forum: CB Antenna Systems
- Topic: interested in beams ??
- Replies: 9
- Views: 16126
Re: interested in beams ??
What's an analyist??? It's not in any dictionary I know of.WARLORD136 wrote:i am sure that you are a professional antenna analyist
Dude - take a chill-pill, no-one had a go at you so there's no need to be feeling vunerable & paranoid
Sheesh - some people eh?
- Wednesday 14th Jan 2009, 3:55
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Cobra 148 GTL-DX Frequency Problem
Thanks Dave,
I take it these are what I need:
http://www.electronicprojectsonline.co. ... 08B&cat=51
Description is a 4 bit full adder DIL-16
Cheers
I take it these are what I need:
http://www.electronicprojectsonline.co. ... 08B&cat=51
Description is a 4 bit full adder DIL-16
Cheers
- Wednesday 14th Jan 2009, 0:09
- Forum: CB Antenna Systems
- Topic: interested in beams ??
- Replies: 9
- Views: 16126
interested in beams ??
Hahahaha
Made me laugh that Jo Gunn site - 'increased audio' WTF???
I'm sure they're well made but some of the performance figures (especially 'audio gain' ) need to be taken with a pinch of salt.
Made me laugh that Jo Gunn site - 'increased audio' WTF???
I'm sure they're well made but some of the performance figures (especially 'audio gain' ) need to be taken with a pinch of salt.
- Tuesday 13th Jan 2009, 21:55
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Cobra 148 GTL-DX Frequency Problem
Okay Dave, Since I've adjusted L21 LL band has become operational again? Anyway, Here are the voltages from the PLL on Mid Band, Ch19 From left to right (starting with the little dimple): Pin 1 - 8.54 Pin 2 - 3.90 Pin 3 - 3.90 Pin 4 - 4.39 Pin 5 - 2.81 Pin 6 - 7.80 Pin 7 - 4.90 Pin 8 - 8.21 Pin 9 - ...
- Monday 12th Jan 2009, 5:28
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Re: Cobra 148 GTL-DX Frequency Problem
Animal, Put the counters probe to TP3 R84 and adjust L21 for 16.490 on channel 19 Mid band in AM or FM in RX mode. Let us know if it does adjust to the correct frequency. You haven't said if it's off on all modes or just AM/FM. Dave. Sorry Dave, my last post should have read TP3 R84 (not TP4) Anywa...
- Monday 12th Jan 2009, 4:05
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Cobra 148 GTL-DX Frequency Problem
Okay - here goes! Started realignment (as best I can with what I've got): DC Voltmeter to TP2 (R126) & set it at 5.4V (it's stable) Set to Mid Band, Ch19, AM Mode & checked TP4 (R124) with counter and it reads 17.08055 with the slug almost to the top of L21 (& 17.92005 when the slug has ...
- Thursday 8th Jan 2009, 3:09
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Cobra 148 GTL-DX Frequency Problem
Thanks for the reply Tim
I'll check them out this weekend and will post the findings.
Steve
I'll check them out this weekend and will post the findings.
Steve
- Tuesday 6th Jan 2009, 1:01
- Forum: Shout Outs
- Topic: HNY - & a big thanks to Rick, Dave Zodiac & the Defp
- Replies: 0
- Views: 6292
HNY - & a big thanks to Rick, Dave Zodiac & the Defp
Happy New Year to everyone & a big thanks to Rick, Dave Zodiac & the Defpom.
This really is the best technical forum on the net & truly is a goldmine of invaluable information available only due the time & effort of all concerned.
All the best for 2009
Steve
This really is the best technical forum on the net & truly is a goldmine of invaluable information available only due the time & effort of all concerned.
All the best for 2009
Steve
- Saturday 3rd Jan 2009, 23:41
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
- Sunday 28th Dec 2008, 2:02
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 148 GTL-DX Frequency Problem
- Replies: 24
- Views: 31806
Cobra 148 GTL-DX Frequency Problem
Radio Make and Model: Cobra 148 GTL-DX PCB Number: PB 010AA PLL Number: MC145106 Test gear available: Stand Alone Frequency Counter, Digital Volt Meter, Power Meter Symptoms: TX & RX are miles off frequency What is working: Everything - just not on the correct frequency. What has been tried: Che...
- Tuesday 21st Oct 2008, 5:00
- Forum: CB Radio Modifications
- Topic: Ham Concorde 3 - back to 11 meters
- Replies: 4
- Views: 6625
- Tuesday 21st Oct 2008, 0:16
- Forum: CB Radio Modifications
- Topic: Ham Concorde 3 - back to 11 meters
- Replies: 4
- Views: 6625
- Monday 13th Oct 2008, 22:13
- Forum: CB Radio Modifications
- Topic: Ham Concorde 3 - back to 11 meters
- Replies: 4
- Views: 6625
- Monday 13th Oct 2008, 4:19
- Forum: CB Antenna Systems
- Topic: 3 element beam height
- Replies: 5
- Views: 11533
- Monday 13th Oct 2008, 4:10
- Forum: CB Radio Modifications
- Topic: Ham Concorde 3 - back to 11 meters
- Replies: 4
- Views: 6625
Ham Concorde 3 - back to 11 meters
Hi All, I've got a Ham Concorde 3 (PTBM133A4X board & PLL 02A) which has in a previous life been converted to work on 10 meters. I've looked at the Xtals & X6 is missing (no holder either) X5 = 21.252.5 (I'll change back to 20.330) X4 = 21.027.5 (I'll change back to 20.105) X3 = 20.802.5 (I'...
- Friday 27th Jun 2008, 16:16
- Forum: CB Radio Repair and Troubleshooting
- Topic: ALIGNING THE FREQUENCY READOUT ON SS-158EDX
- Replies: 1
- Views: 3850
Try here:
http://members.tripod.com/malzev/cb-funk/ept6900.htm
The SS 158 has the 690010Z board - you'll need the correct equipment to do the job properly.
http://members.tripod.com/malzev/cb-funk/ept6900.htm
The SS 158 has the 690010Z board - you'll need the correct equipment to do the job properly.
- Friday 13th Jun 2008, 9:13
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 200 Rev 2 Clarifier Range
- Replies: 6
- Views: 7911
- Friday 13th Jun 2008, 2:40
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 200 Rev 2 Clarifier Range
- Replies: 6
- Views: 7911
- Thursday 12th Jun 2008, 21:06
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 200 Rev 2 Clarifier Range
- Replies: 6
- Views: 7911
- Thursday 12th Jun 2008, 7:20
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 200 Rev 2 Clarifier Range
- Replies: 6
- Views: 7911
Cobra 200 Rev 2 Clarifier Range
Guys A friend of mine has a Revision 2 Cobra 200 GTL DX (PCB# PFM-0090A-BE) It's well documented that the coarse clarifier shift isn't sufficient on the Rev 2 to reach the zero's (obviously it needs 5Khz at the very least but only manages approx 3Khz) I'm led to believe there are a number of ways to...
- Thursday 12th Jun 2008, 4:54
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 29 NW LTD Classic no power. Please help
- Replies: 4
- Views: 8291
- Thursday 12th Jun 2008, 1:11
- Forum: CB Radio Repair and Troubleshooting
- Topic: No output - final or driver?
- Replies: 5
- Views: 7951
- Monday 9th Jun 2008, 21:14
- Forum: CB Antenna Systems
- Topic: dx on hollidays..what antenna should I use?
- Replies: 2
- Views: 7531
Try this, then click on 'Projects to build':
http://home.planet.nl/~poelm348/index.html
The Skypper is a folded wire yagi and works very well.
Best wire is 'flexweave' multistrand but it's expensive.
Good Luck
http://home.planet.nl/~poelm348/index.html
The Skypper is a folded wire yagi and works very well.
Best wire is 'flexweave' multistrand but it's expensive.
Good Luck
- Monday 9th Jun 2008, 21:02
- Forum: CB Radio General
- Topic: Which one?
- Replies: 4
- Views: 7826
- Tuesday 3rd Jun 2008, 6:22
- Forum: CB Antenna Systems
- Topic: A-99 Fiberglass "splinters"
- Replies: 10
- Views: 20042
- Tuesday 3rd Jun 2008, 5:16
- Forum: CB Antenna Systems
- Topic: Antenna Specialist Super Scanner ?
- Replies: 2
- Views: 8002
- Tuesday 3rd Jun 2008, 4:12
- Forum: CB Radio Modifications
- Topic: Mosfet conversion for Uniden SSB chassis (Pro 810e/Pro 640e)
- Replies: 3
- Views: 6597
- Tuesday 3rd Jun 2008, 4:08
- Forum: CB Radio Repair and Troubleshooting
- Topic: Cobra 200GTL DX Transmitting problems
- Replies: 8
- Views: 10297
- Monday 2nd Jun 2008, 17:27
- Forum: CB Radio Modifications
- Topic: PA transistor swap - advice needed.
- Replies: 6
- Views: 9994
- Monday 2nd Jun 2008, 8:48
- Forum: CB Radio Modifications
- Topic: Cobra 148F GTL DX+
- Replies: 9
- Views: 12182
- Monday 2nd Jun 2008, 8:33
- Forum: CB Radio Repair and Troubleshooting
- Topic: No output - final or driver?
- Replies: 5
- Views: 7951
Wow - $4 for the driver, much cheaper than here in the UK, the typical price is £10 each (most of which is made up of Government tax) then shipping on top!!! :shock: That said I'm happy to pay that, as our politicians deserve the proposed 25% pay increase (yeah right!) :evil: I'll swap the driver &a...
- Sunday 1st Jun 2008, 17:44
- Forum: CB Radio Modifications
- Topic: Cobra 148F GTL DX+
- Replies: 9
- Views: 12182
- Sunday 1st Jun 2008, 5:48
- Forum: CB Radio Modifications
- Topic: PA transistor swap - advice needed.
- Replies: 6
- Views: 9994
- Saturday 31st May 2008, 12:48
- Forum: CB Radio Repair and Troubleshooting
- Topic: No output - final or driver?
- Replies: 5
- Views: 7951
No output - final or driver?
Guys, I've got a radio with no RF output (TX into a dummy load showed nothing on the meter - also no signal received on another radio in the same room on same frequency) All other functions work as they should. Am I right thinking that if the finals have gone, I should still get output from the driv...
- Friday 30th May 2008, 20:24
- Forum: CB Radio Modifications
- Topic: PA transistor swap - advice needed.
- Replies: 6
- Views: 9994
PA transistor swap - advice needed.
Any advice appreciated guys. Can a 2SC2290 transistor be replaced with a 2SC2879??? I looked at the data sheets for both & the voltages are all identical between Collector/Emitter/Base. The only difference I can see is the collector current is higher (5A more) on the 2879 (the 2290 is 20A) &...
- Sunday 18th May 2008, 21:05
- Forum: CB Radio Modifications
- Topic: Cobra 148F GTL DX+
- Replies: 9
- Views: 12182
- Saturday 17th May 2008, 7:55
- Forum: CB Radio Modifications
- Topic: Cobra 148F GTL DX+
- Replies: 9
- Views: 12182
Cobra 148F GTL DX+
Hi I'm looking to improve the RX section of a EPT690010Z PCB inside the Cobra 148F GTL DX+ I'm not too bothered about the AM/FM modes but I'd like to increase sensitivity of SSB without increasing the noise floor. Would replacing the stock AM detection diodes (1N60P) with ECG583 Shottky devices impr...
- Tuesday 4th Mar 2008, 16:45
- Forum: CB Antenna Systems
- Topic: Base Antenna
- Replies: 13
- Views: 23615
- Tuesday 22nd Jan 2008, 0:20
- Forum: CB Antenna Systems
- Topic: Your opinion on Antennas
- Replies: 11
- Views: 21652
- Wednesday 14th Nov 2007, 5:53
- Forum: CB Radio General
- Topic: engine noise coming through radio?
- Replies: 7
- Views: 14056
As probably stated in the post above (but I couldn't be arsed reading it!) mobile interference is either picked-up via your antenna (radiated) or via your power leads (conducted) - so before you start looking for remedies you need to establish which of the two it is. Plug a dummy load into the ant s...