Search found 125 matches

by Animal
Friday 27th Jun 2008, 16:16
Forum: CB Radio Repair and Troubleshooting
Topic: ALIGNING THE FREQUENCY READOUT ON SS-158EDX
Replies: 1
Views: 3842

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.
by Animal
Friday 13th Jun 2008, 9:13
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 200 Rev 2 Clarifier Range
Replies: 6
Views: 7899

Would it be cheaper than buying an Anritsu or Marconi test set??? :-k :wink:

Can you send me a PM with your 'phone number please Rick?

Many thanks.
by Animal
Friday 13th Jun 2008, 2:40
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 200 Rev 2 Clarifier Range
Replies: 6
Views: 7899

Cheers Rick, I've done just that - Richard said 'Rick who?' :wink:

Hope you can give me some guidance when I come to re-align the PLL loop osc [-o<

Thanks again, much obliged.
by Animal
Thursday 12th Jun 2008, 21:06
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 200 Rev 2 Clarifier Range
Replies: 6
Views: 7899

Thank you Rick - excuse my ignorance, I take it X2 is 10.240Mhz reference?
by Animal
Thursday 12th Jun 2008, 7:20
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 200 Rev 2 Clarifier Range
Replies: 6
Views: 7899

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...
by Animal
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: 8274

Sounds like you (ahem - your man!) has a blown reverse-polarity diode (+ & - leads hooked up the wrong way round without a fuse or one larger than 3 amps) If this is the case then you may have aslo burnt up the copper foil on the board on the + side too. If you've got an ohmmeter you can quickly...
by Animal
Thursday 12th Jun 2008, 1:11
Forum: CB Radio Repair and Troubleshooting
Topic: No output - final or driver?
Replies: 5
Views: 7933

Update! Changed driver & I've got output!!! Zzwiiing!!! 8) I sourced it from Chris at Mode Components (for a very reasonable £5.95 considering they were £12 at Knights) There are other sources in the UK for these mosfets but most had min. quantity of ten pieces & min. order value etc, etc. H...
by Animal
Monday 9th Jun 2008, 21:14
Forum: CB Antenna Systems
Topic: dx on hollidays..what antenna should I use?
Replies: 2
Views: 7501

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 8)
by Animal
Monday 9th Jun 2008, 21:02
Forum: CB Radio General
Topic: Which one?
Replies: 4
Views: 7808

I had the DX95T & it was a cracker - only minor complaint was the slight drift on SSB during warm-up (typical for a lot of radio's) but this was confined to only 0.2Khz for the first ten minutes or so - not an issue really. I always got good reports on the audio quality - it was very loud withou...
by Animal
Tuesday 3rd Jun 2008, 6:22
Forum: CB Antenna Systems
Topic: A-99 Fiberglass "splinters"
Replies: 10
Views: 19967

I think the original finish is something called a gel-coat (as used on marine craft hulls etc) Rub yours lightly (not too much or you'll go blind!) with aluminium oxide abrasive cloth (about 60 grit) then give it another coat. Finish off with some SWR bees-wax & a chamois leather for a hi-gloss ...
by Animal
Tuesday 3rd Jun 2008, 5:16
Forum: CB Antenna Systems
Topic: Antenna Specialist Super Scanner ?
Replies: 2
Views: 7968

I love the old Avanti/Antenna Specialists stuff - I've got a PDL-II The A/S Super Scanner is a unique antenna - directional & omi-directional in one (switchable by a phasing system) although a compromise on a standard yagi (but there's no need for a rotator!) They're very sensitive to element le...
by Animal
Tuesday 3rd Jun 2008, 4:12
Forum: CB Radio Modifications
Topic: Mosfet conversion for Uniden SSB chassis (Pro 810e/Pro 640e)
Replies: 3
Views: 6575

I was told by someone to steer clear of the ERF2030 but to use the IRF520 instead - anyone know what the deal is??? :?
by Animal
Tuesday 3rd Jun 2008, 4:08
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 200GTL DX Transmitting problems
Replies: 8
Views: 10276

Hi Beakster, try Chris at mode componants for spares, if they're not in his catalogue, give him a ring, he's very helpful and reasonable prices. www.modecomponents.co.uk I'll second that - got two mosfets for the price it would have cost for one at that shop which is open day & Knight! :wink:
by Animal
Monday 2nd Jun 2008, 17:27
Forum: CB Radio Modifications
Topic: PA transistor swap - advice needed.
Replies: 6
Views: 9962

Thanks Rick - it was just a thought (the idea was to reduce the heat generated by under-driving the 2879 but getting a similar output to the 2290's)

The 200 doesn't have a fan & relies on the heatsink alone.

ATB

Steve
by Animal
Monday 2nd Jun 2008, 8:48
Forum: CB Radio Modifications
Topic: Cobra 148F GTL DX+
Replies: 9
Views: 12156

Well, I noticed that when I ran the rig mobile I got a virtually flat needle anyway on SSB but at home I get S4 - S5 of hash (probably from next door's plasma screen or wireless router!) When I'd done the mod, I noticed the hash level dropped to S2 - S3 at home & made it possible to hear weaker ...
by Animal
Monday 2nd Jun 2008, 8:33
Forum: CB Radio Repair and Troubleshooting
Topic: No output - final or driver?
Replies: 5
Views: 7933

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...
by Animal
Sunday 1st Jun 2008, 17:44
Forum: CB Radio Modifications
Topic: Cobra 148F GTL DX+
Replies: 9
Views: 12156

Yes, I did modify it & whilst there was an improvement it wasn't dramatic & was more noticeable when trying to copy a very weak station. If it means the diffence between making that elusive contact and missing it then I'd say it's worth it given the relatively small cost & time involved....
by Animal
Sunday 1st Jun 2008, 5:48
Forum: CB Radio Modifications
Topic: PA transistor swap - advice needed.
Replies: 6
Views: 9962

It's the RD16HHF1 Mike & whilst the drive is lower than that needed to get full output from the 2879, the IMD figures are lower & I'd guess they'd run cooler not being driven hard - that's the logic of the swap, not the higher output (but if I get more as a by-product then it's a bonus!) ATB...
by Animal
Saturday 31st May 2008, 12:48
Forum: CB Radio Repair and Troubleshooting
Topic: No output - final or driver?
Replies: 5
Views: 7933

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...
by Animal
Friday 30th May 2008, 20:24
Forum: CB Radio Modifications
Topic: PA transistor swap - advice needed.
Replies: 6
Views: 9962

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) &...
by Animal
Sunday 18th May 2008, 21:05
Forum: CB Radio Modifications
Topic: Cobra 148F GTL DX+
Replies: 9
Views: 12156

Well, I've managed to find some info about improving the RX on this board. Change TR(Q)17 from 2SC1674 to 2SC2999 Change D1, D2, D30 & D31 to 1N6263 Shottky diodes This should improve signal to noise ratio & reduce the 'hash' noise I'm also replacing TR(Q)54 (the stock part is a 2SB754, whic...
by Animal
Saturday 17th May 2008, 7:55
Forum: CB Radio Modifications
Topic: Cobra 148F GTL DX+
Replies: 9
Views: 12156

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...
by Animal
Tuesday 4th Mar 2008, 16:45
Forum: CB Antenna Systems
Topic: Base Antenna
Replies: 13
Views: 23527

Try the Sirio 827 (or even the 2012/2016) with optional anti-vibration ring. It's a terrific performer & built like brick out-house. I've also used the Imax 2000 too - it is more aesthetically acceptable to the XYL & performs well, especially with the optional couterpoise but it whips around...
by Animal
Tuesday 22nd Jan 2008, 0:20
Forum: CB Antenna Systems
Topic: Your opinion on Antennas
Replies: 11
Views: 21607

Imax 2000 (with groundplane kit) or Sirio 827 both have a superwide bandwidth, excellent performance & stand up well to the riggors of a hard winter. The Sirio works well on 20 meters too & can be tuned anywhere between 30Mhz & 14Mhz with an ATU although it's efficiency is reduced the fu...
by Animal
Wednesday 14th Nov 2007, 5:53
Forum: CB Radio General
Topic: engine noise coming through radio?
Replies: 7
Views: 14033

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...
by Animal
Saturday 10th Nov 2007, 6:39
Forum: CB Radio Repair and Troubleshooting
Topic: Uniden 2830
Replies: 2
Views: 5587

Thank you Rick - much obliged. :D

Steve
by Animal
Monday 5th Nov 2007, 22:33
Forum: CB Radio Alignments
Topic: superstar 3900
Replies: 5
Views: 17091

Kenny you crazy fool - who let you loose with a trimmer tool??? :doh:

ATB

Steve :twisted:
by Animal
Monday 5th Nov 2007, 22:29
Forum: CB Radio Alignments
Topic: Uniden 2830
Replies: 1
Views: 6167

Uniden 2830

Can anyone help with a Uniden 2830 It's off frequency by 0.0003KHz on SSB according to receiving stations and I need the RIT (Clarifier) button at the 3 o' clock position to hear people clearly on SSB. Also, the modulation on SSB is a little weak? I've probably posted in the wrong section so have ho...
by Animal
Monday 5th Nov 2007, 22:27
Forum: CB Radio Repair and Troubleshooting
Topic: Uniden 2830
Replies: 2
Views: 5587

Uniden 2830

Can anyone help with a Uniden 2830 It's off frequency by 0.0003KHz on SSB according to receiving stations and I need the RIT (Clarifier) button at the 3 o' clock position to hear people clearly on SSB. I've probably posted in the wrong section so have hot ashes at the ready for the walk of shame wit...
by Animal
Monday 5th Nov 2007, 22:14
Forum: CB Radio Repair and Troubleshooting
Topic: Supertar 3900 - locked on mid-band
Replies: 3
Views: 6129

Dave - you truly are the (Northern) Daddy!!!=D> Sorted - just as you suggested inside the radio. If you're the Dave I think you are, I had a lend of a Jumbo Mk3 of yours a little while ago - super job by the way! Thanks again - & not intentionally wanting to abuse your generous nature could you ...
by Animal
Monday 5th Nov 2007, 6:10
Forum: CB Radio Repair and Troubleshooting
Topic: Supertar 3900 - locked on mid-band
Replies: 3
Views: 6129

Supertar 3900 - locked on mid-band

Hi, Could anyone walk me through a problem with a Superstar 3900 which is locked on mid-band. Presumming there are no broken wires to the band selector knob what else can I check when I get the covers off? Bearing in mind I'm a novice with this, please reply in terms a thick northerner like me would...
by Animal
Thursday 18th Oct 2007, 6:15
Forum: CB Radio Amplifiers
Topic: RM Italy KL 200-P
Replies: 5
Views: 11115

The CB frequency for most of the world is between 26-30Mhz or the eleven meter band (depending on where you are) so it'll be fine without any modification.

Watch your input power & SWR & you'll be cookin' on gas!
by Animal
Thursday 18th Oct 2007, 5:51
Forum: CB Radio General
Topic: Cobra 200 GTL DX
Replies: 14
Views: 25587

There have been numerous negative reports about the performance of the Cobra 200GTL-DX on SSB, in particular the frog-like croaky audio and insufficient clarfier shift (meaning you can't get the zero's) & are all well documented on most online forums. Here in the UK, some of the 'bugs' have been...
by Animal
Wednesday 10th Oct 2007, 23:15
Forum: CB Radio Amplifiers
Topic: HELP!
Replies: 1
Views: 5242

Looking at the datasheet for the Toshiba 2SC2290 the max input is 4w PEP which gives approx. 60w out. Double that for two.

I'd suggest you'd need at least a 30amp supply to keep it happy & not run your power supply into the ground. :idea:

ATB

Animal :twisted:
by Animal
Monday 8th Oct 2007, 5:24
Forum: CB Radio Amplifiers
Topic: ZETAGI BV130-P
Replies: 2
Views: 9166

I know there was a BV131 which had one EL509/EL519 tube & a BV135 which had two tubes - the latter being good for approx. 200w am/fm. Sorry, can't help with the BV130P - try mailing Zetagi but be patient, they're slower than the relay's fitted to their amps! :roll: If you're replacing the tubes ...
by Animal
Monday 8th Oct 2007, 5:15
Forum: CB Radio Amplifiers
Topic: Zetagi B2002 transistors - Motorola ???
Replies: 4
Views: 12631

Thanks for replies guys - I already ordered & fitted a matched quad - MaCom MRF422 from RF parts, about ?90 inclusive of shipping from the States.

With 15w FM in I get 550+ out, so I'm cooking on gas!!! :twisted:
by Animal
Sunday 19th Aug 2007, 5:07
Forum: CB Radio General
Topic: Zetagi BV130-p
Replies: 1
Views: 5612

I believe it's to calibrate the meter on the front panel. :idea:

I had a BV135 & it was reading miles out - as most Zetagi's do :roll:

ATB

Steve
by Animal
Saturday 18th Aug 2007, 23:37
Forum: CB Radio Amplifiers
Topic: Zetagi B2002 transistors - Motorola ???
Replies: 4
Views: 12631

Looks like they (Zetagi) bolted a B750 inside a steel cabinet with a transformer & a fan!!! :roll:

hmmmmmmmmm????:idea:
by Animal
Saturday 18th Aug 2007, 23:16
Forum: CB Radio Alignments
Topic: Superstar 158EDX
Replies: 9
Views: 15852

OK - here's an update. I got the lid off & it's a Ranger EPT690010D board as sonoma suggested. Problem is I can't be sure that I've located VR7 correctly - it's right at the front of the board just behind the front panel next to some sort of jumper pins & I can't see the lettering on the boa...
by Animal
Saturday 18th Aug 2007, 2:15
Forum: CB Radio Alignments
Topic: Superstar 158EDX
Replies: 9
Views: 15852

SS158EDX Woes

Thanks for the replies everyone :D :D :D Rick - It's off frequency on the high band (27.415 - 27.855 MHz) & FM TX only? I'll borrow a frequency counter & try the VR7 TX offset???:? As far as the PLL re-alignment - that's way out of my depth but I'll let you know how I get on with VR7 at the ...
by Animal
Thursday 16th Aug 2007, 22:09
Forum: CB Radio Amplifiers
Topic: Zetagi B2002 transistors - Motorola ???
Replies: 4
Views: 12631

Zetagi B2002 transistors - Motorola ???

Hi All, Anyone know what PA transistors are used in the Zetagi B2002??? There's a Motorola ref (SRFE1164) but I think it's specific to Zetagi & I can't cross-reference them to an alternative??? Also, if I do find a equivalent, will I need them to be matched in pairs (there's four inside) :idea: ...
by Animal
Thursday 16th Aug 2007, 20:11
Forum: CB Radio Alignments
Topic: Superstar 158EDX
Replies: 9
Views: 15852

Superstar 158EDX

Has anyone got any alignment/tuning info on the Superstar 158EDX ??? I believe it has the same board as one of the Ranger radio's but not sure which one? :? Sadly, the one I've just bought is approx. 2KHz off frequency on FM/AM only - SSB is fine though.:roll: Any assistance greatly appreciated. :D ...
by Animal
Tuesday 29th May 2007, 19:46
Forum: CB Radio Amplifiers
Topic: Rm-kl5oo-amp.beasty
Replies: 5
Views: 13710

You don't need a tune-up, just a bigger power supply if you intend to use it home-based. These things draw over 40A on setting #6 (600W PEP) If you're running mobile then make sure you hook that bad-boy directly to the battery (not to your cigarette lighter socket - believe me, some folks do try!!!)...
by Animal
Tuesday 29th May 2007, 19:26
Forum: CB Antenna Systems
Topic: ASTRO PLANE PARTS
Replies: 3
Views: 9358

I think Avanti became Antenna Specialists & are still in business - mainly cell phone kit (shame really 'cos their stuff was the badgers nadgers as cb antennae goes!) :?

Bits & bobs do appear on fleabay from time to time - might be worth a look? :idea:
by Animal
Tuesday 23rd Jan 2007, 21:28
Forum: CB Radio Repair and Troubleshooting
Topic: BELCOM LS102 TUNING FAULT
Replies: 10
Views: 17298

Belcom Tuning

:D Rick/Mike

Thanks for the suggestions - I'll have a crack at it at the weekend & let you know how I get on. :wink:
by Animal
Monday 22nd Jan 2007, 8:55
Forum: CB Radio Repair and Troubleshooting
Topic: BELCOM LS102 TUNING FAULT
Replies: 10
Views: 17298

Belcom LS-102L

Mike,

I could use that info you have on the Belcom - my problem is similar to Soundmanjim's but mine corrects itself once the radio has warmed up. :?

Any info would be greatly appreciated. :wink:
by Animal
Sunday 21st Jan 2007, 22:29
Forum: CB Antenna Systems
Topic: Beams?
Replies: 1
Views: 6039

A vertically polarized antenna will not pick up a horizontal antenna's signal as well as another vertical one would & vice vera. Horizonatally polarized antenna's are often used by DX'ers as they are less prone to interferance but you will still hear a DX station on your vertical antenna as the ...
by Animal
Friday 19th Jan 2007, 5:54
Forum: CB Antenna Systems
Topic: USING AN ANTRON99 WITH A COBRA 148 GTL DX
Replies: 1
Views: 5661

You will struggle to keep the SWR down across five or six banks of forty channels - the antenna will only be resonant on a particular frequency(say 27.555 for example) dependant on its length & the SWR will get higher the further you move away from this resonant frequency (called antenna bandwid...
by Animal
Thursday 18th Jan 2007, 9:03
Forum: CB Antenna Systems
Topic: AV-174 sigma IV
Replies: 2
Views: 9134

:idea:

Sirio currently produce a copy of the Antenna Specialists (Avanti) Sigma IV called the Vector 4000.

It's also a 3/4 wave monster but I suspect it's not quite as well built as the original (I had a Sigma IV way back in 1981 & it did perform incredibly well :twisted: )
by Animal
Thursday 18th Jan 2007, 8:41
Forum: CB Radio General
Topic: What's the difference between the Turner M+2/U, and the JM+2
Replies: 1
Views: 5849

Turner Mics

:idea:

The J refers to electronic switching & the wiring codes are as follows:

Shield - Common
White - Mike or Audio
Black - TX
Red - RX

Hope this helps? :D