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No communication to device on coax connection. TX light flashing on coax side. No RX light coming on. I have a 50 ohm terminator on the coax cable. I have moved the MDI switch between the 2 positions (MDI - MDI-X). When I power up my device and the ATMC15 I get the ON LINE light, the TX light, and the RX light on. RX and ON LINE lights go out. I try pinging from my PC via the RJ45 connection on the ATMC15 but get no response.

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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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SOURCE: cobra 29ltd classic : no rx / tx


D23 is the reverse protection diode and it shorting is the primary reason your fuse blew. As you posted, power was applied in reverse, hence other components would also fail. Pls check:
1. D22 - 9.1V Zener Diode
2. TR23 (2SC1096) 9 Volts regulator
3. D19 - 5.1 Zener Diode
4. IC4 (TA7222) - Audio Amp
5. TR14 (2SC2029B/10) - Finals
6. TR15 (2SC2028B/20) - Driver
7. Most capacitors over 220uF (like C123, C114 & C112)

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

Good luck and kind regards.

Posted on Feb 04, 2008

  • 141 Answers

SOURCE: WAP54G bricked power led blinking LAN connection shows as not connected

you did not specify where the wap is connected when you pinged it. Try this, connect the wap54g to your pc. Assign static ip on the lan of the pc, then ping if you can ping you should be able to access the configuration page. if the power is still blinking you can upgrade the firmware

Posted on Mar 11, 2008

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SOURCE: codra 29 nw ltd classic

Hook radio to antenna. Key radio. Pester nearest trucker for radio check on ch 19. Can trucker hear you OK? Can you hear trucker OK? then meter is bad or connection to meter bad.

Can you hear truckers, but they can't hear you? Final Output transistor is bad...

Posted on Mar 20, 2009

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SOURCE: UPS has a fault. no power coming out back

change the battery and try

Posted on Sep 05, 2009

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SOURCE: Red RX/TX and red ANT light on my CB

Well,first hand ,some cobra radio,s have red some have green RX/TX lights, but are you modulating? Some green lights turn red. What is your standing Wave on the antenna,s? You need to check it and the output of the radio. To do this you need a watt or field strenth meter. Can get one at Radio Shack. Your standing Wave is ok as long as it is below a 2. That has to be done on the antenna. ..hope this helps...

Posted on Mar 12, 2010

Testimonial: "Thx the rx/tx light is supposed to turn red I found out. Still trying to get the antenna prob fixed though."

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Cobra 29 ltd Classic no sound, no rx, all lights work rx,tx, lite up. The SWR meter moves when mic is keyed up.

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check antenna and coax connections.

i know checks sound basic but they could save you a lot of headaches later

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I can't configure my CPS1600

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- Shawn

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How to split WIFI signal between one radio and two antenna?

Hi Philip,

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This   document  would give you an idea on the lobes and radiation patterns.

Good luck.

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