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852
Advanced Member
Username: 852
Post Number: 537
Registered: 3-2006
| | Posted on Tuesday, August 11, 2009 - 6:44 pm: | 
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I've got a cobra 29 BlackChrome, with echo and upgraded finals installed..I can turn the radio on and it's fine for awhile. Then all of the sudden without warning it loses transmit and receive. The power is still on but thats it, no meter function, transmit or receive. Then after awhile it will start working again. sometimes when it does this i turn the power off for awhile then power back on. And it will work for a few minutes, then the same symptoms again..Any ideas??
Tommy~852~CEF 750
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Starface
Senior Member
Username: Starface
Post Number: 2542
Registered: 1-2005
| | Posted on Wednesday, August 12, 2009 - 3:05 pm: |
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Yes,check for lose or broken coax ends at radio and antenna and check coax from radio to antenna.
Sounds like you have a coax short to me.
Good Luck.
George/Starface/KI4NBE
CEF 476 CVC 014 HAM 181
SOUTHEAST CEF NET CONTROL
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Blackjack
Junior Member
Username: Blackjack
Post Number: 46
Registered: 2-2007
| | Posted on Wednesday, August 12, 2009 - 3:35 pm: |
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EASY ANSWER= THE NEW COBRA 29'S ARE MADE LIKE JUNK..... I KNOW OF AT LEAST A GOOD 10 PEOPLE THAT HAVE BOUGHT NEW CBORA 29'S IN THE PAST YEAR,,,AND JUST ABOUT ALL OF THEM HAVE HAVE THE SAME PROBLEM AS YOUR STATING,,,,OR SOMETHING SIMILIAR.. I WAS GOING TO PURCHASE A BLACK CHROME 29 A YEAR BACK,,,AS IT IS A BEAUTIFUL LOOKING RADIO,,,,MY TECH ADVISED AGAINST IT,TOLD ME HOW MANY HE HAD COME TO HIM WITHIN A MONTH OR 2 OF THE CUSTOMER PURCHASING 1 & HAVING RECIEVE PROBLEMS ETC..... HIS ADVICE,,DUMP IT,,BE IT ON THE AUCTION SITE OR WHEREVER.... UNFORTUNATELY THEY DONT PERFORM HALF AS GOOD AS THEY LOOK...ANY COBRA 29 MADE AFTER 2006,I WOULD STAND CLEAR OF,,,,LIKE COBRA 29'S,,,BUY 1 BEFORE THAT DATE,THEY'RE NOT MUCH MONEY,,,,ALL THE CBORA 29'S FROM THE MID 80'S ALL THE WAY THRU THE LATE 90'S & INTO THE EARLY MILLENIUM WERE SOLID PERFORMERS,,,,,THE AUDIO ON THOSE RADIO'S AFTER TUNED UP RIVALS MANY EXPORTS,,,,THATS A FACT,,,, THEY ARE SCREAMER'S..... IF YOU WANT AN EXACT PERFORMER TO THE GOOD OLD SCHOOL COBRA 29'S,,,GET YOURSELF A UNIDEN 68 OR 78,,,I BOUGHT THE 79LTW FROM COPPER A MONTH AGO,,,I HAD MY TECH MAKE IT CHANNEL 19 READY,,,,, HE REMOVED THE WEATHER BOARD WHICH I DIDNT FEEL I NEEDED,OPUT IN AN ENDLESS ECHO BOARD,,,,AROUND $ 25 FOR THE BOARD,,,,PUT AN RF VAIRABLE/WATTAGE CONTROL WHERE THE USELESS DELTA WAS,,,,AND ALSO ADDED TALKBACK,,,MADE THE WEATHER KNOB,, A DUAL KNOB,ECHO & TALK....& NOW GET THIS...........HE REPLACED 2 TRANSISTORS IN THE RADIO I BELEIVE,,,,JUMPED A CAP OR 2,,,, HE WONT REVEAL HIS EXACT MOD,,,,SAYS THE 1'S ALL OVER THE WEB ARE SIMILIAR BUT NOT QUITE AS EFFICEINT,,,,AND ANYHOW..I HAVE THE DEAD KEY SET AROUND 2 WATTS,SWINGS TO JUST ABOUT 40 WATTS P.E.P. ON MY PALSTAR METER,WHICH IS IDENTICAL IN P.E.P.. ACCURACY AS A BIRD 43 METER,,,,YES I CHECKED IT ON BOTH METERS...........I WAS TOLD FROM NUMEROUS LOCALS THAT MY 78 WITH A NOISE CANCELLING MIC SOUNDS LOUDER & CLEARER THEM MY COPPER PURCHASED & TUNED RANGER SS158EDX,,, IT BEAT MY SUPER GALAXY EXPORT,,,,THE ONLY CLOSE CONTENDER WAS MY VOYAGE VR9000 WITH THE N.P.C. MOD DONE,,& EVEN THEN MY UNIDEN 78 BEAT IT,,,,THE 78 WAS STILL LOUDER YET CRYSTAL CLEAR,,,,NUMEROUS LOCAL'S WANT TO BUY A UNIDEN 78 NOW AFTER HEARING HOW I SOUND,THEY CANT BELIEVE I SOUND LIKE THAT OFF A RADIO THAT COST UNDER $ 100,,,,UNIDEN IS 1 OF THE FEW COMPANIES THAT ALTHOUGH THEY OUTSOURCED TO CHINA AS WELL AS EVERYONE ELSE,,,,,THEY HAVE THEM BUILT AT A BETTER FACTORY UNDER TIGHTER QUALITY CONTROL & SO THE UNIDENS TILL THIS DAY ARE STILL BUILT JUST AS GOOD AS THE 1'S FROM THE 80'S & 90'S,,,,,AS FOR COBRA,,,,THEY ARE A SHADOW OF WHAT THEY ONCE WERE.....I WOULDNT BUY A NEW COBRA 29,148 OR NOTHING ELSE THEY SELL,IT'S JUNK,PLAIN & SIMPLE,SOME PEOPLE MAY SAY OTHERWISE,BUT I GO BASED ON WHAT I KNOW FROM OVER 20 YEARS IN THE HOBBY & MORE IMPORTANTLY FROM WHAT MY TECH ADVISES,,,,SINCE HE'S BEEN WORKING ON RADIO'S FOR OVER 30 YEARS & WAS WELL REGARDED AROUND THE BIG APPLE IN WHAT HE CAN DO TO A RADIO.....................BOTTOM LINE...GET YOUR YOURSELF A UNIDEN 78,OR EVEN 68 IF U DONT CARE FOR TALKBACK& ECHO ETC.....THE 68 HAS THE SAME GUTS AS THE 78,,,,,MOST OF THE HEAVY HITTERS U WILL NOTICE AT KEYDOWNS WITH THE DAVEMADE'S ARE RUNNING OLD SCHOOL COBRA 29'S,OR UNIDEN 68 OR 78'S,,,,,, A CUPLE OF THOUSAND DOLLARS IN WATTAGE & A RADIO THAT RUNS UNDER $ 100,,,,ASK YOURSELF WHY......... MY 78 WILL OUTTALK /SOUND BETTER THAN A GOOD PORTION OF THE $ 300-$400 EXPORTS OUT THERE,,,,,BETTER QUALITY AUDIO BY FAR & YEA IT DOES NOT HAVE A FREQ COUNTER,OR A BAND SELECTOR KNOB FROM A-L,,,BUT LETS FACE IT,U DONT NEED THAT NONSENSE,,,CB IS NOT WHAT I WAS IN THE 70 OR EVEN 80'S OR 90'S,,,THE CHANNELS ARENT THAT PACKED THAT U NEED UPPERS OR LOWERS ANYMORE,,APART FROM THE SKIP THATS BEEN PULLING IN ALOT MORE ACTIVITY ON THE CHANNELS THIS SUMMER,NORMALLY IM SURE YOUR AREA IS NOT BOOMING WITH CB ACTIVITY,,,,AND IF U DID WANT CHANNELS, THE UNIDENS CAN BE EASILY MODDED FOR A GOOD 40 UPPERS & LOWERS BY ANY REPUTABLE TECH,,,IF IT MAKES U BETTER TO HAVE SOME EXTRA CHANNELS...............BOTTOM LINE.........GET YOURSELF A UNIDEN 68 OR 78 FROM COPPER........HAVE IT TUNED FOR MAX PERFOMRNACE BY A TECH THAT KNOWS WHAT HE'S DOING & COME BACK & TELL ME IF IM WRONG................BEST REGARDS............ |
Train_man
Member
Username: Train_man
Post Number: 60
Registered: 10-2007
| | Posted on Sunday, August 16, 2009 - 12:04 am: |
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I will agree on a few things. Todays Cobras aren't what they used to be. The quality is by far less superior then that of their Uniden counter parts.
I will however, have to disagree with adding all the junk, i.e. swing mods, upgraded finals, echo, talk back yada,yada, yada. It's pointless and just adds more stress and heat to an otherwise good radio.
Adding extra channels to an AM only radio is pointless also. Everything above 27.355.0 is SSB. Below 26.965.0 is mostly AM, so adding lowers would be fine.
So bottom line, if ya want your radio to last, get a standard p & t and add a power mic and call it a day. If ya feel the need for more power, add an amplifier. Enough said.
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Blackjack
Junior Member
Username: Blackjack
Post Number: 47
Registered: 2-2007
| | Posted on Sunday, August 16, 2009 - 12:46 pm: |
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While i concor with most of what your saying Trainman....... the one thing i will say is i do not have a swing kit in my radio.... im against them as well..what do i have is a mod u may say sounds like it does the same thing but i compared a stock uniden 78 with just the audio turned up compared to 1 with a certain mod, and the radio with the certain mod was much louded & clearer as compared to the stock uniden,,,as told by a good number of locals on the radio..... To me power mic's are pointless...no need for them in today's radio's,,they are loud enough.....i have numerous turner & d104 mic's that sit on my shelf for the past few years as collector's pieces........as when i tryed using any of them on my voyare vr 9000,my ss158 edx,,,,my super galaxy etc,,,i was told by numerous people it didnt sound good,,,i had to leave the mic gain on the radio atr barely 9 o clock or it would be to much audio,,,,in my opinion,,noise cancelling mic's are much better matched with them type radio's,,,your still loud,crystal clear & every1 does not have to hear every sound in the room & 2 rooms away...power mic's are amplified & will pick up much more background noise,,,,turned down or not.....as far as the echo / talkback/ etc...i agree..thats why i mentioned those features being ''channel 19 '' ready,,,,as thats mostly what you hear around my way on 19,,,noise toys galore,,,echo & so on,,,, some trucker's,,,base stations & other mobile's alike....... |
Nickybots110
New member
Username: Nickybots110
Post Number: 9
Registered: 1-2007
| | Posted on Sunday, August 16, 2009 - 12:52 pm: |
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I'm gonna have to agree with blackjack 100%. The new cobras are garbage. The Black 29's are without a doubt the worst of them all.
A 25/29 or a 68/78 modded for audio and wattage the right way will give you years of talk time without a problem. Why use a power mic where you need to worry about buying batteries when a $30 noise canceling mic on a properly done radio will sound 100 times better (louder and no background noise) Everyone has there own preferences being I was always old school and thought you could not beat a power mic.
Like I said its a matter of having the right person work on your radio. I know a 78 done right with 636 will be heard and you would never belive its a 78/29 |
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