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JX-M20 tuning and volume

I just bought a JX-M21. When unlocked, the volume and tuning buttons won't slide. I can't select frequency or volume.

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How do i fix an FM freqency problem?


What is there to fix? You have now access to a larger interval of tunable frequencies. There are two or three selectable FM ranges. In Japan you can tune between 76 MHz and 108 Mhz. In North America the range is between 87 Mhz and 108 Mhz. There is 3rd one called School Band but I do not recall the limiting values.

Jul 09, 2014 | Sangean PRD5 AM/FM/RDS Radio

1 Answer

FM frequecy increases/decreases too mugh pr. step


Hi, Your post/description "the frequency increases in steps of .2 Mhz or 200Khz" refers to the increment of frequency spacing between tuning steps and is largely dependent on the radio standards of the country/region the radio is intended to be used. Assuming no hardware fault to the radio, tuning steps may be adjusted by: 1. With the radio switched off, press the Step/Band button for about 2 seconds. This will display the current FM tuning step (200Khz as in your case); 2. With the radio switched off, press the Step/Band button for about 10 seconds. This will display FM and a blinking 50Khz with a single beep sound. By rotating the Tuning Control you can increase or decrease this value. 3. pressing the Step/Band button again will move you to the tuning increments of the AM band again adjustable via the Tuning Control. 4. pressing the Step/Band button again will save the setting and complete the process. Hope this be of some help. Good luck and kind regards.

Sep 13, 2007 | Makita BMR100 Radio

2 Answers

Old manuals


You have buttons to press to change the modulation.
FM covers regular FM band: 76 MHz (Japan) to 108 MHz and the higher frequency ones used for Air and Weather.
AM covers the Long waves (in Europe), the regular AM band (520 kHz-1700 kHz), and the Short wave bands 2MHz 30 MHz
It seems that you can tune the frequency in by direct entry with the number keys.
I do not see the image of the face of the radio but from my experience with many Grundig/Eton you should have two buttons with arrows (left A and Right Arrow) or two buttons with + and Minus (not the volume buttons). If you are in SW, pressing one of the buttons changes the tuning to the adjacent Meter band.

Jan 09, 2014 | Grundig G4000A FM/AM Radio

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

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

How do set default AM & FM stations? Every time I turn on the radio I have select the station I want.


When you turn on the radio or select a wave band the display shows the last frequency you tuned in. That gives you 3 frequencies: One for the AM nd, one for the FM band (and maybe 3 for SW.
That does not look like much but there is nothing you can do about it. Sorry. It does not have Autamatic Tuning System, nor memory locations to store favorites stations. The portable Grundig/Eton such as the G5, G3, G8 have a plethora of memory locations and ATS.

Dec 28, 2010 | Grundig S350 AM/FM/SW Radio

1 Answer

Need to make sure programmed


Program the Midland 74-109 Weather Radio
a) Turn unit on. Extend the antenna. Adjust volume up slowly; Do you hear anything? If not, try replacing the 9 volt battery with a fresh one, in the accessible battery compartment underneath the unit. Repeat above steps.
b) If no sound is heard, turn unit over and look for "WEATHER" slide switch on bottom. With unit on & volume adjusted to comfortable hearing level, slowly slide switch down (or up) through various frequencies [1)162.550, 2) 162.400, 3) 162.475, 4) 162.425, 5) 162.450, 6) 162.500, 7) 162.525] until voice transmissions are heard. This should be the closest National Weather Service (NWS) broadcast for your area. Check the NWS website at http://www.nws.noaa.gov/nwr/nwrbro.htm for your state, click on the state name, and look for the site name or site location nearest you. The frequency for that site should be the strongest, and appropriate for your area.
c) You can set the alert tone, for special weather alert broadcasts, on the bottom of the unit on the slide switch marked "ALERT". Set the switch to the desired type of alert: 1) LED [LED on top of unit (marked ALERT) lights up when alert is broadcast-no siren tone/alarm is heard] 2) LED & ALARM [LED lights up and alarm/ siren tone is heard] 3) VOICE [LED on top of unit lights up and voice broadcast is heard, only; no siren tone/alarm is heard].
d) Be sure to press the "ALERT" button on top of the unit and leave the volume at a comfortable listening level to hear weather alerts for your area (Alert LED on top of unit lights up to show Alert function is active). You can test the present volume level by pressing the "TEST" button. Be sure to press the "ALERT" button again after listening to the volume level to re-set the Alert function. You can listen to weather broadcasts anytime, by pressing the "WEATHER" button. After listening, be sure to re-press the "ALERT" button to reset the Alert function.
e) 9 volt battery life should last about 6 to 7 months, depending on how much unit is used an number of alerts received. Replace battery every 6 months, or when you replace your smoke alarm battery, or at beginning and end of daylight savings time. A 12 volt AC adapter to replace the battery, can be used. One should have been supplied with unit. If not, a replacement can be found at Radio Shack.
f) This should complete your Midland Weather Alert Radio Model 74-109 programming.

Apr 09, 2009 | Midland 74-109 Weather Radio

3 Answers

Locked keys


Hi. I have a different Jwin model radio to yours, but they might have this in common: is there a 'hold' button on yours? If so, this is used to 'lock' all the buttons so that you don't switch it on/ change stations etc accidentally. Look for a 'key' symbol on your display, and press AND HOLD the 'hold' key until the symbol disappears. Pressing the 'hold' button briefly will make the symbol re-appear, and lock the keys again.

May 18, 2007 | Jwin JX-M20 AM/FM Radio

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