The main dial light bulbs are burned up, the rubber is falling apart and I know that getting these light bulbs is getting harder by the years (some local stores ask $4+ for them).

So I wanted to replace them with 5mm warm white leds.?I designed a 5mm led holder which slips into the bracket for the light bulbs. First prototype fresh out of the printer. Looks good and it fits (due to a? difference in diameter on the center section, it slips into place and when rotated 90 dgr. it locks).

Bought some nice 5mm warm white leds and installed them.?

Also I started to work on a drop in replacement voor the PB-1560 PCB's (the light bulb PCB's between the MHz and Select) with 1206 SMD leds with the same color. I use 2 leds for each segment because the 1206 leds aren't that bright and this way you get a better light spread. Just simple testpads to solder the wires to.

?

(Yes I know MHz is with a capital H ;-) )?

Hope that before this weekend the SMD 1206 LEDS arrive so I can make a prototype to see how the light looks.

When all goes well I'm going to order a batch of prototype PCB's and upgrade my Frog.??
--

73 Lex PH2LB?

El martes 12 de enero de 2021 a las 06:04 p.m., Rafael Ruiz cloute escribió:

He hecho la modificación y va bien. me gustaría ponerle un contador de frecuencia pero no se de donde tomar la se?al.

?

He hecho la modificación y va bien. me gustaría ponerle un contador de frecuencia pero no se de donde tomar la se?al.

I took the hood of my FRG7 and the values I measured are :?

Unlocked (led on) = 1.9V
Locked (led off) =? 0.29V?

?

But have to say that I have modified my FRG7 with this a bicolor led mod, see :? https://www.ph2lb.nl/blog/index.php?page=yaesu-frg7-mods

?

?

What voltage does the Q111 emitter have to have for the Lock led to turn on?

Hello Rafael,

I have send you a personal message.?

73 Lex PH2LB

Hello Rafael,

I will take a look in the shack (might be one in my spare parts section).?

What's you location / country ??

Recientemente he adquirido una FRG-7? a la que le falta el mando de sintonización. Si alguien tiene algún mando para vender le agradeceré me indique el precio pues estoy interesado en adquirirlo.
Saludos
Rafael

I recently purchased a FRG-7 that is missing the tuning knob. If someone has a command to sell, I will be grateful if you indicate the price as I am interested in purchasing it.
Cheers
Raphael

Thanks All for this thread. A useful Mod! I combined it all into a new pdf in the files section. Monitor Internet - FRG-7 - MHz Lock Red_Green LED Mod.pdf .

73
Roger VE7LB Group Owner

Many thanks to everyone who has read my post and to those who have replied. I now have all the information required to successfully carry out the mod.

73, David - G4EDR.

UPDATE

Just completed the mod and it all works great. Despite having access to more modern receivers I always enjoy 'driving the FRG-7 and this mod makes it even better. Again, thanks for the help.

I also have the mod in my FRG-7's?
This is a close up from the wires :?

Yellow/Green = signal

Red/Green = 10V

Blue/White = GND


more info at :?

开云体育

I intend to carry out the bi-colour LED lock mod on my FRG-7. Are there any detailed photos or diagrams showing where the 10v, 0v and led lock pickup points are.?

The website of monitor.co.uk shows some info but not sure where to get the 10v from and whilst it shows the 0v and led lock connections I'm not sure on which PCB they are.

There used to be a YouTube video from a ham in Finland (I think) which gave detailed instructions but can't find it.

Many thanks.
David G4EDR.?

Hello Fellows ,first of all thanks so much for the input ,might be best not to mess with the set ?,I see that there is not a lot of room on the board ,things are very close
?and I don,t want to do any damage , good advice if it ain't broke don,t fix it .I think I will ask Santa for a ESR capacitor checker so I can check condensers in?
circuit ,I pulled out the chassis and it looks very clean and no bulging caps, is it normal when you try to tune or find shortwave stations there is a noise between
?stations ,I call it a snow noise like the way TV's way back when made when there was no channel on at the time , just asking never had a shortwave radio like
?this before , only had old console floor models that had many bands on them ,loved those sets used to stay up late at night to see what I could tune in from
?far away, again thanks so much ,take care and stay safe all the very best Rick?

Hello Rick,

I have 2 FRG-7 from around the same year and until they are showing signs of problems I won't change the caps.

Also I don't believe that you have to do a re-alignment because most of the caps are used for DC buffering / filtering.

But of course I could be wrong on the last part.??

I agree with Phil. Transistor based radios operating on low DC voltage rarely have capacitor problems. The higher the voltage the more likely you are to have capacitor problems. It doesn't hurt to visually inspect the electrolytic capacitors and replace any that show leakage or bulging. The main problem with replacing all of the electrolytic capacitors is the cheap circuit board material used in almost all Japanese radios. The boards work OK for new assembly but not so much for repairs. The glue holding down the traces may let go if overheated. An ESR meter would be a good first non-destructive capacitor tester. There are also in circuit capacitor testers for further non-destructive testing.

73
Roger VE7LB

Hello Rick
I will defer to the experts, but if a radio is working fine then leave it alone.? Unfortunately it's a lesson I have learned the hard way.
Cheers, Phil

Hello fellows I picked up a 1976 Yaesu Musen FRG-7 this year from Dan in Quebec ,this unit seems to work fine but I was always told a unit this old should have
?the electrolytic caps changed, do you fellows think they should all be changed for new ones and if I get the kit and do it will I have to do a realignment ,I have no problem?
?changing the caps but if I have to do realignment better I leave it alone ,I am sure I could not realign it properly ,any advice fellows ,thanks so much for your?
?time all the very best Rick

Hi Greg,
If you are using a PC the Files section is near the bottom of the left pane.

73
Roger VE7LB