Question about Uniden BC340CRS Base Scanner

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Display is not lighting up only hear a bussing and static. I get no response when I press any of the buttons.

I bought it at an estate sale. It appears to be unused. Look like may have been purchased in 1985. When I plug it in, I only hear it buss and some static. The display sometimes will blink on for a second and go right back off.

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Posted on Jan 02, 2017

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SOURCE: Unkown functions

Lo Hi Air UHF refer to separate bands to be monitored.

25 50 75 are the KHZ steps that can be set for searching.

Using these functions can limit what is found either during close call or during search. By switching to 25 50 or 75 in will search in those size jumps. IE in 25 155.000 155.025 155.050 155.075 etc.

Posted on May 02, 2008

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We bought at an estate sale. We are looking for a manual


Try using the make and model and the word "manual" on a Google search.

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We have these vertex 2 way radios in 55 school busses and they do not work well at all. Static and can't even talk to the other busses very well


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It will not turn on - just bought this as a new product at an estate sale


caveat emptor

there is usually a cooling off period on these types of sales. return it! most estate sales suggest testing before bidding or give statemnt that it has been checked. contact selling agent
Please rate my help++++Thanks for using FIXYA

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The sales person said i could receive fm radio on this mp3 player


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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

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