Question about Cobra 8 MILE 2-WAY RADIO

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Cobra HL-300P won't turn on but vibrates

I have a Cobra HL-300P. When I turn on the radio, nothing shows on the display but radio vibrates.

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Dear sir, It seems ur radio's LCD screen has some loose connection open it carefully by unscrewing & then switch it on ( remeber do not switch on radios without antennae , it may burn transmission circuit ,) u cad locate the fault & fix it
regards
raj

Posted on Apr 12, 2009

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Cobra manuals


Try this site, http://www.manualsonline.com

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gee did you check the reverse polarity diode

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sounds to me you have to low voltage/ amps...try testing your power source with a meter the ultra is ideal @ 13.8 VOLTS

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Attempted to adjust the color display on my brand new Cobra 29 LX and now the display shows only the number 88 and some rows of digital blocks-the CB display is completely locked up and nothing i've...


The display on this radio uses firmware. I fear there may be a glitch in it. Maybe it was flashed wrong. If you hit the dim button, and it doesn't go back to normal, something is not write with the firmware.

There is not much out there yet about tweaking this. You will probably have to send it to cobra. It should still be under warranty.

Jun 18, 2011 | Cobra Radio Communications

1 Answer

How to get it off vibrate, i lost manual


Press the Mode button until the Call Setting icon flashes on the screen. The current setting ("01"
vibrate + ring, "02" vibrate only or "03" ring only) will be displayed. Press the Channel Up or
Channel Down button to change the call setting.

More programming details (with pics) are available in the user's manual which can be downloaded HERE

user666.jpg

Nov 20, 2010 | Cobra microTALK LI6000-2 (14 Channels)...

1 Answer

Everthing on the radios work but there is no sound from the speaker.The RX shows on the display and the the vibrate work when called. Whats up?


#1 bad speaker, #2 external speaker jack bad/shorted, #3 volume control bad/open, #4 squelch control bad, & #5 is it both radios no audio?

May 13, 2010 | Cobra microTALK LI 7200-2 WX VP Two Way...

1 Answer

Stucxk on vibrate


Hi,

As per instructions of the manual:
"...Your microTALK® radio can alert you to incoming signals by
sounding an audible call tone, by vibrating silently or both. To change call settings:
1. Press the Lock/Mode button until the Call Setting icon flashes on the display. The current setting (“01” vibrate + ring, “02” vibrate only or “03” ring only) is displayed.
2. Press the Channel Up or Channel Down button to change the call setting.
3. Choose one of the following:
a. Press the Lock/Mode button to enter the new setting and proceed to other functions.
b. Press the Hi•Low/Enter button to enter the new setting and return to Standby mode
..."

Should you need a copy of the manual, it is available here.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Mar 16, 2008 | Cobra 22 CHANNEL 2-WAY RADIOS

2 Answers

Long range mode


Hi,

For the Cobra PR4700WX:
The user's manual is available here
To turn on/off the long range mode - (If you are referring to low & high power); Press and hold the Hi•Low/Enter button for two seconds.
Alternately, if you are referring to the Light/Max Range (receive sensitivity), 3 options:
1. To briefly turn off auto squelch - Press the Light/Max Range button for less than five seconds. If you hear two beeps, you have turned the maximum range extender on.
2. To turn maximum range extender on - Press and hold the Light/Max Range button for at least five seconds until you hear
two beeps which indicates the maximum range extender is on.
3. To turn maximum range extender off - Press and release the Light/Max Range button or change channels.
Probable reason that "fishing was all right but for hunting there is to much static" is becasue these radios operate on line of sight principle. Anything that obstructs the linear view would reduce signal strength/range. There is not that much obstruction when fishing compared to that when hunting in the woods or rough uneven terrain.
Please note that when using Channels 1 through 7 and 15 through 22 on high power, the Hi icon will be visible on the display. When using those channels on low power and on Channels 8 through 14, the Low icon will be visible on the display.

For the Cobra PR3500DX:
The user's manual is available here.
The transmission message icon off when not in use - this icon will only display if the radio is receiving something or if your are pressing the PTT button.
The other three the transmission signal is on at all times - indicates that either you are transmitting (unlikely) or the radio is in constant receive mode (most likely). I would venture a guess that the Auto Squelch is switched "OFF" or Maximum Range is switched "ON"

Both the 4700 & 3500 has Power Saver and it is a built-in feature. Your radios have this unique circuit designed that extend battery life. If there are no transmissions for 10 seconds, the radio will automatically switch to Battery Save mode and the Power Saver icon will flash in the display. This will not affect the radio’s ability to receive incoming transmissions.

Hope that this be of some help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Nov 07, 2007 | Cobra 22 CHANNEL 2-WAY RADIOS

2 Answers

Radio is switched on vibrates and goes directly to a blank screen


The problem that you discribe, sounds weird, check if the radio battery connectors are clean, if the radios are new, I think you must to cliam the warranty.

Feb 19, 2007 | Cobra MicroTalk PR 4200-2 WX (22 Channels)...

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