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Ft 897 transceiver's receiver went deaf after a static discharge on the antenna line, now only strong signals are heard. When connecting the antenna the noise level does not increase. Wayne VK2PDW.

Not sure if Amateur Radio problems are your interest , but any help would be appreciated.

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The final transistor/transistors damage

Posted on Apr 04, 2014

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Insignia® - 75W DVD/CD/HD Radio

Connecting an external AM antenna solved the problem. The internal antenna (if there is one) is useless.

Posted on Sep 09, 2008

alicantecoli
  • 22156 Answers

SOURCE: Onkyo 8511 FM reception has

yes their is but you would need a local man to do it this is not something you can do yourself ,also of course it depends on the fault as some faults may cost more to fix than the set is worth .try a length of wire just pushed into the aerial plug and if its still the same then ask a local man but if its all microchips inside then it cannot be repaired very easly .could just be a broken wire on the inside of the set from the aerial socket to the board ,something right simple and a two minute job to repair

Posted on Dec 06, 2010

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Yaesu ft-857 squelch problem


Your RF gain control needs to be turned all the way up to be able to receive signals and if you are on one of the HF bands like 40 meters or any HF band the squelch control needs to be all the way off! You do not use squelch on HF! When on VHF or UHF then you would rotate the squelch control just to the point that the background noise stops and go no further. Higher squelch settings will only block weak signals and your radio will be deaf! Squelch control rotated just to the point the background noise stops! NO SQUELCH ON HF. Turn the squelch all the way off on HF!

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Transceiver signal interference


The FT-840 uses a die-cast RF power amp with thermally switched fan to ensure full power output (up to 100 watts). The digitally synthesized local signals ensure clean, low-noise transmitter output on all HF amateur band. There might be no AC line interference. it has strong Rf output. any AC line intersect does not affect its radio performance. Check and adjust RF power so to maintain proper output. some times more RF power generated at the output may cause interference. adjust Rf power..Even some unfiltered Noise getting the other end of the end may calso cause interference. Check for any Ripple voltages present at the output. Contact authorised service station for further Rectification. thank you shanth

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What causes week receive??


this sounds like an antenna problem, another thing to try, is to run the rig through a relay cleaning cycle....hold band up and down, and turn unit on

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JVC HD-56G886 tuner stopped working


My (unfortunate) guess would be the Tuner received a static discharge when you were changing the antennas... this time of the year is bad for static - if you're in a "Winter" climate.

Receivers have a very sensitive FET or MMIC amplifier right inside from the antenna connection to make it better for picking up distant stations.

However, this same "sensitive" amplifier is also prone to being destroyed by even a small static discharge... especially if the tuner had its power turned ON.

Sad to say, it's likely toasted... :-(
(I hope I'm wrong... but you have already tried all other possible solutions)

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1 Answer

FM antenna is not providing reception, despite cable connected to powered antenna amplifier. TV also connected to powered antenna amplifier (splitter) works fine. FM mode produces only static. I purchased...


If I understand your setup, you've connected the receiver antenna terminal to the output of the antenna amplifier. If this is true, I'd suggest trying the receiver using a plain old FM dipole antenna (available at Radio Shack and other stores) or even just a piece of wire hooked to the antenna terminal. You should be able to pick up some local FM stations then.

What might be happening is that the FM is being filtered out by the amplifier. Some amps made mainly as a TV signal booster have an FM trap designed to block the FM broadcast band. In the analog broadcast days, the FM band was right near the sound part of a TV signal, and the trap was there to prevent interference. It may be filtering out your FM band.It may also be possible that you're just overloading the FM antenna input with the amplified signal. Sometimes a signal can be too strong. Using a simple wire antenna will let you test the receiver by itself.

Other than connecting an antenna you shouldn't have to do any setup for FM reception. If you still get no stations at all when using a simple antenna, then the receiver may need service. But I doubt Circuit City would have sold a floor model that was defective, even at the very end, unless it was clearly marked as such and sold "as-is". I'm pretty sure you'll find that the receiver works with an antenna made for FM.

Sep 14, 2011 | Denon DRA-37

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I have a dlink wbr2310 and have very good signal for 50 ft. but I need to expand that to 150 ft. with 4 walls to go through. What would be a good solution. thanks


You should be able to purchase high gain antennas for this unit from the same store, which, as per the manufacturer extends your range to about 900Ft line of sight. Speak to them about their range of antennas.

Oct 11, 2009 | Computers & Internet

1 Answer

!994 Park Avenue FM radio reception poor. AM signal OK


Check antenna connections at radio and antenna assy.. Poor connections will only receive AM and hardly any FM

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1 Answer

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Some home theatre receivers will not output sound until you ( LOCK INTO ) a radio signal, be sure you have a antenna connected and are receiving a strong signal. Unlike the older model you would receive static sound until you found a station.

Feb 27, 2009 | Gateway Audio Players & Recorders

1 Answer

Screen Replacement damaged signal strength


I'm guessing that the antenna was disconnected or damaged during repair. I've had a few of these phones open and know it is easy to do. If it's been too long, since you got the phone repaired, to go back and complain, you might have to replace the phone. Forgive me but I have no idea what you are talking about when you say: "receiver" and "transceiver" because this is a cell phone and doesn't have a separate receiver or transceiver.

I had this phone and it's easy to take apart, I believe it actually has replaceable covers so it might be true that he replaced the screen and front/back panels. It might also be a problem that it was damaged when A LARGE TRUCK RAN OVER IT.

These phones have an "internal" antenna, which might be a coil of wire, or a small layout of copper traces that create an antenna. If you take the phone apart look for one of those and see if you can plug it back into the main board.

TAKE APART FOR NOKIA 3315/3310

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AC line interference


I experienced very similar or the same problem with FT-840. When power is inceased over about 50 W, an AM on RF signal arises. Even when TCVR is supplied from accu and connected to dummy load. Period of interferencing signal is about 7.5 ms (130 Hz), so it cannot be hum from mains. I have not opened the PA block yet but i guess, it could be caused by damaged capacitor(s). Jiri

Dec 23, 2007 | Computers & Internet

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