Question about Panasonic Audio Players & Recorders

3 Answers

Panasonic RF-B65 short wave radio won't tune to frequency when turned on, just flashes 'E' and turns off automatically. Any suggestions ?

Posted by on

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

RF-B65 has a known issue with the power connector on side. It gets resistive from not being used. If you apply 6 vdc and it works, its most likely the batteries or the power connector. If both produce a "E" its PLL doesnt lock. Power plug most likely issue. Another issue is the tuning knob. It skips or jumps irratically. The up/down frequency changes are by a cube 1/2 inch square contactor. Its not optical. Just simple mechanical contactor. Remove the small cube from chassis and spray liquid gold. It will clean wire contactor and lubricate internals. You cannot buy the cube. Cleaning it always works for me. RF-B65 radio is a sure winner. Small, reliable and very sensitive. Has SSB also. eter

Posted on Feb 12, 2011

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Could be a problem with the powersupply or the connector.

Posted on Dec 25, 2009

Ad
  • Level 1:

    An expert who has achieved level 1.

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 17 Answers

Either the batteries are dead, or you have something more serious.

Posted on Sep 06, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Transmits and receives no modulation out


I am not an expert but I think there can be little or no modulation of the carrier wave unless there is an audio input to the modulator. Like any audio amplifier a transmitter modulator (amplitude modulation) is quiescent without an input.

If the modulation amplifier and audio pre-amp are working and modulating the carrier wave and the antenna is ok then audio modulated radio frequency must be being transmitted.

It would be an extremely good quality CB that had a modulation meter. Mostly all they have is a meter giving an indication of the rf power being sent to the antenna and that rf (radio frequency) power would be the same whether modulated or unmodulated.
The modulation envelope, incidentally, is traditionally viewed or measured with an oscilloscope.

The indicated rf power could be verified using a field strength meter but the only practical way to discover if a standard CB is transmitting modulated rf is to listen to the transmission on a suitable receiver. If the squelch is turned down it will be obvious if the rf carrier wave is being received as the hiss would be silenced. If no audio is received it can be assumed none is being transmitted.

I suggest you try another microphone and lead and if that doesn't work it is clearly a job for a repair shop.

Oct 28, 2015 | Radio Communications

2 Answers

Panasonic RX-D10


Wireless devices do use radio frequencies. Have you taken it elsewhere ? This is just a bit of knowledge I found floating around in my head. It could be that the device won;t work work in that area.

Aug 07, 2008 | Panasonic RF-544 Radio

1 Answer

I have a red signal light that keeps blinking in gp328 any ideas?


A blinking red light can be a sign of the radio picking up radio frequency waves (RF) on your same frequency or a nearby frequency. There may something transmitting in your area which is causing the blinking light, or you may have another radio which could be stuck in transmit. One way to check this is to take the radio to a different location and see if the blinking still occurs.

Next, the question would be, does the radio function otherwise correctly? If so, continue to use the radio and do not concern yourself with the light. If the radio does not function properly, they you should send it to a qualified radio repair center for service.

Best regards.

Sep 17, 2014 | Radio Communications

1 Answer

I have an Eton G3 recently purchased which has an operators manual, but does not contain any references to the layout of the buttons etc. I would like a link to find out the correct use of the radio


The buttons are marked and the use of most of them is self-evident.
The number keys are used to enter frequencies (direct tuning).
Lock locks the radio and prevent changes (trurning ON or OFF, changing frequency, any function change is blocked)
Sleep sets a timer.
+, - go up or down in frequency, or when you are setting time.
U/LSB is for toggling Upper or Lower Side Bands.
Auto Up and Auto Down are for the automatic tuning system (scanning the frequency spectrum)
AM is for switching to the AM (medium wave band)
AM/Meter band is for switching to the Short wave bands, and FM is for Frequency modulation band.
VOL + and - increase and decrease volume levels

Page/time: It has 700 memory locations to store frequencies. These are organized in pages (maybe up to 100 pages). You jump to next page with that button. Used also when setting time . Please read the instructions.

F1 to F7 are used to select the day for the alarm. F1 for Day 1, Sunday, F2 for Monday, etc) You can set an alarm for each day of the week.
Reset to reset configuration
TZ/Line in TZ set time zone, Line In if you wan to use the speaker of the radio as the output device for a signal from some other radio, or MP3 player
The tuning knob may also be used to change the displayed value while setting time (I can't remember exactly. You have the manual)
Erase erasing a stored frequency or a page (Check that)
Copy see above.
2123b87b-fee3-4be3-953e-23e2a82c57c5.png

Nov 04, 2013 | Grundig eTraveller VII AM/FM/SW Radio

1 Answer

How do you tune cb radio 75wx st


Not sure what you mean by tune.

If you mean peak and tune, where in you increase the internal power output of the radio, then the quick and dirty way of doing it is, turn VR4 all the way to the left and take the tank slug out of L14. HOWEVER, I prefer to use a watt meter on avg power to adjust L14 to peak, and no more as not to over bias the final. But typically nothing will happen if you do. This will give you full modulation, and full carrier.

If by tune you mean, Tuning the SWR. Then that is a whole different topic.

In this case you don't actually tune the radio. You tune the antenna. If the antenna is not the correct length, relative to the wave length, Frequency of transmission..... then you will have a high SWR and this means more of your RF energy is not leaving the antenna, and going back into the radio. This is bad. this kills radios.

So to tune it you must make the antenna the right length. Here is how to check SWR.

Tune the radio to ch 20. Put the rf/SWR/CAL switch to CAL.
Turn the CAL knob all the way to the left.
Key the radio, and turn the CAL knob to the right until the needle of the meter is at the CAL mark, on the top line of the meter indicated by a little upside down triangle. That is the cal mark. The needle should be on it.
Flip the RF/SWR/CAL switch to SWR while holding the key down.

The meter is now showing your SWR. If it is under 2 you are not real good, but not gonna kill the radio. If you are 1.5 or less you are good to go. Ideally you want to be 1.5 or less if you can.

If it is over 2 you should try to get it lower.

here is how to find out if the antenna is too long or too short.

Turn to ch 1, repeat the steps to check SWR. Then do the same thing on ch 40. Compare the reading. If the reading is higher on 1 then on 40 the antenna is too short, and you need to make it longer. If it is higher on 40 then 1, it is too long and you need to make it shorter.

All antennas have a way of adjusting the length.

Hope this helps.

Aug 10, 2012 | Radio Communications

1 Answer

Cannot select USB or SSB.Displays LSB or LISB? Very poor reception


On the Satellit 750 you have a button marked SSB. If you have selected a shortwave band then you can press the SSB button. Pressing the button repeatedly will toggle between LSB and USB.

You will need to know the exact frequency and the broadcast time, and the side band. Turn the radio on. Select a frequency which you know carries SSB signal and wait. Those that broadcast on SSB are not radio stations, maybe ham radio operators.

You can also select a short wave band, press the SSB button once or twice to select the side band and launch the automatic tuning system. It will scan the meter band and stop for a few second when it receives a strong enough signal. If you are able to perceive a clear signal on LSB or USB then you found a broadcaster. Some radios just have SSB and you cannot choose the side.
Personally, when I buy a radio I always insist on SSB but I have never been lucky tuning in an SSB signal. I keep trying once in while.

Jun 23, 2011 | Grundig Satellit 800 AM/FM/SW Radio

1 Answer

Short static burst


I don't know a whole lot about microphones, but if it's wireless, then it has to accept interference according to the FCC. Wireless microphones normally connect using RF transmitters/receivers which can normally be tuned to specific short-range broadcast frequencies, which can be interfered with by passing waves of other frequencies. Even if the broadcasted radio waves aren't the same frequency, or within the same bandwidth, the harmonic distortion radiates at multiples of the fundamental (broadcasted) frequency.
If you can, try changing channels and see if that clears things up. If not, then perhaps contacting the manufacture can help.

Jun 03, 2010 | Sennheiser (EW165G2A) Professional...

2 Answers

CAN SHORT WAVE RADIO CAUSE DIGITAL TV RECEPTION PROBLEMS


Theoretically, they could. The digital TV signal is still sent via radio waves, but the frequencies should be so far departed that they have little or no effect on each other

Nov 12, 2009 | Televison & Video

1 Answer

John Q president cb


Hi,

If by calibration, you are referring to the check if your antenna is tuned, below information may be of help.
S/RF/SWR/CAL SWITCH. When in the S/RF position, the meter swings
proportionally to the strength of the received signal. When transmitting,
the meter indicates relative RF output power.
When in the "CAL" position, the SWR meter can be calibrated by adjusting
the "SWR CAL" control to the "CAL" mark on the meter face.
When in the "SWR" position, the standing wave ratio is measured.

SWR METER. Measures standing wave ratio of the antenna system.
Used to properly adjust the length of the antenna and to monitor the
quality of the coaxial cable and all RF electrical connections. If there is any
degradation whatsoever in any of the foregoing, due to humidity, salt
spray, vibration or corrosion, the SWR meter reading will rise, thereby
indicating that a problem exists.
To calibrate, switch to the "CAL" position, transmit by pressing the mike
switch, and adjust the SWR control to the "CAL" mark on the meter; then
switch to "SWR" position for the SWR measurement.

If however you are referring to the internal calibration or tuning of the transmit and receive sections, you would need several instruments/equipment such as RF generator (0-30Mhz with 1Khx modulation), Spectrum Analyzer, Modulation Scope, Dummy Loaded Wattmeter, Frequency Meter and some others. These of course are not readily available to the average user.

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.

Jun 12, 2008 | Cobra 29 LTD CB Radio

1 Answer

I can't pick up anything...


Hello even though everything is connected properly, have you checked for standing waves on the antenna to radio connection? Also you may have to perform a sensitivity test on the unit. The problem is you need a RF generator for that. Set you RF generator to the frequency that is equal to the CBs middle frequency and modulate the CW with 1KHz at 50% modulation, tune to the middle of the CB band on the radio and set the output of the RF generator to .1uv and loosely couple the signal to the CB antenna with a loop of wire. Your CB should be picking up a 1KHz tone gradually turn the power level down and when the tone cuts off that level is cutoff level, then increase the level until you can hear the tone again when the tone cuts on that value is the sensitivity of the unit. Compare the measured value to the value in the owners documentation. if the sensitivity is low this could denot a problem in the RF/IF section of the CB.

Oct 04, 2007 | Uniden Bearcat Pro PC68LTW 40-Channels...

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

888 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5113 Answers

kakima

Level 3 Expert

102366 Answers

Michael Kovalik III
Michael Kovalik III

Level 2 Expert

117 Answers

Are you a Panasonic Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...