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Re: Yaesu frg-7 red power rocker switch
I took another look at eBay. See item 124299468972. It appears that the same seller has red switches. He also gives away the manufacturer in his pictures. The pictures show the red toggle removed from the switch. He might sell you just the red part. Google fujisoku switch and quite a few sites come up.
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Re: Yaesu frg-7 red power rocker switch
Hi Roger, Its the red bit I want, the switch is fine but the red piece is very wobbly and can be easily pulled off the switch, I want to replace that with a tighter one. Cheers Steve On Tue, 29 Sep 2020 at 16:22, Roger VE7LB <Roger_VE7LB@...> wrote: Hi Steve, |
Re: Yaesu frg-7 red power rocker switch
Hi Steve,
Look at eBay item # 124331786820. Two switches for $15. The only problem is that they are grey and black. You may be able to remove the red outer section and put it on the grey switch. That leaves the black one for use if that doesn't work. 73 Roger VE7LB ? |
Re: Filter mod - need help
Hi Roger
Just to close the circle on this.? My amateur friend restored the FRG-7 back to original spec viz the filter and discovered a dry solder joint on the IF board while he was at it.? Fixing that plus an alignment has it running better than ever.? It's great to have it back!? Thanks for replying. 73 Phil |
Re: Filter mod - need help
Thanks Roger I should have explained that the pictures show the filters now removed from the board. Since my posting I have enlisted the help of a much more technically competent amateur friend and obtained some information from a member of the Australian Radio DX Club here.? We (he) is optimistic it can be sorted.? I shall post back if that all fails. Many thanks for your reply. 73 Phil Best wishes Phil Sent with Secure Email. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Sunday, August 9, 2020 10:32 AM, Roger VE7LB <Roger_VE7LB@...> wrote:
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Re: Filter mod - need help
Hi Phil,
It's hard to tell what's wrong from the two pictures. The only obvious thing is the bare copper wire not being grounded. It looks like it was under a screw head at one time. If that doesn't work pictures of the other ends of the four grey coaxes might help. 73 Roger VE7LB ? |
Filter mod - need help
Hello all
My FRG 7 had a filter mod done at some stage in its life and I need some help to work out how to wire it up properly.? It's a long story, but while recapping the radio the filter, which was wired into the mode switch, came adrift.? Completely operator error, but of course now I am having trouble now working out how to wire the filter back in.? I have attached two photos showing the filters. Any help appreciated.? Radio works well, but is now deaf. cheers, Phil |
File /FRG-7 with non GAR-7 Digital Readouts/FRG-7 KRS Display/KRS FRG-7 Displays.pdf uploaded
#file-notice
[email protected] Notification
The following files have been uploaded to the Files area of the [email protected] group. By: Roger VE7LB Description: |
Re: FRG-7 Caps
Thanks Roger for the reply ,checked the solder side of the board and every thing looks clean and smooth ,if those caps were replaced they did a very neat job ,I just thought with the two different brands of electrolytic caps they must have replaced?
the bigger caps ,I did look close at the caps and they look as they should in good shape ,with them being low voltage as you said and everything working good I think I will leave well enough alone ,I don,t want to damage the circuit board at all. ?Do you think with the two different brands of caps that some have been changed or thats just the way they were done in production ,thanks again for your help all the very best Rick |
Re: FRG-7 Caps
Hi Rick,
The most important thing that you can do with your FRG-7 is to make sure the fuse in the rear holder is 1/2 amp and no larger. If a problem develops with a main filter capacitor the fuse will blow. It doesn't hurt to inspect the electrolytic capacitors for leakage and replace if leakage is found. Take a look at the solder side of the circuit board holding the large capacitors. Does it look like the solder has been disturbed under the capacitors? Problems with electrolytic capacitors are proportional to the voltage they are subjected to. A 450 volt filter capacitor will not last as long as a 25 volt filter capacitor. All of the electrolytics in your FRG-7 are low voltage. I never replace all of the electrolytics in low voltage transistorized equipment. It's easy to damage the circuit board traces and pads. If I was going to check all of the electrolytic capacitors in circuit I would use an ESR meter. See - for some more information. 73 Roger VE7LB Group Owner |
FRG-7 Caps
Hello my name is Rick new to this group ,I got a FRG-7 from Danny in Quebec that looks and works like new ,I found a website that shows you how to find out when the set was made ,my ser. # is 6M081728 so from
?what I found out the set was made in November of 1976 ,I opened up the set to look at the chassis and found out that the big electrolytic caps were a very light blue colour and made by Rubycon and the smaller electrolytic ?caps were a grey colour and made by Elaina ,I had read that some say to change the caps because of their age and some say if they work and look fine just leave them alone ,anyway i just wanted to know if any of the members ?would know that because ?the bigger caps are of a different brand than the smaller caps could it be that some of the caps have been change in it,s life ,I really don,t want to change all the caps in this unit it looks too tight in there for me ,I would have thought that Yaesu Musen used all the same brand caps in the set that they built ,any thoughts on this ,thanks for your time all the very best Rick |
S & S Engineering Digital Readouts
I previously added some information about the S & S Engineering Digital Readouts to the Files Section "FRG-7 with non GAR-7 Digital Readouts" folder. There is presently an eBay seller with four of these unbuilt kits for sale at $40 each delivered. eBay # 372956780739. The only problem is that they don't come with cases.
I mention the case size in the files section. Alternatively the LED section could go in the existing dial window and the circuit board elsewhere in the FRG-7. I have no relation to the seller. 73 Roger VE7LB |
Re: moth balled yaesu
Hi,
Page 51 of the FT-757GX service manual lists two pilot lights. One for the VFO and the other for the meter. A free copy of the service manual is available at - https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwijhpLphM3qAhX4GTQIHeOpD-4QFjAAegQIBhAB&url=http%3A%2F%2Fwww.iw2nmx.it%2FYaesu%2FFT-757GX%2FFT-757GX%2520Service%2520Manual.pdf&usg=AOvVaw1hvjTDuWtBUsz1I9gWuZd5 The old FT group has moved to [email protected] and would be a good place for further inquiries as all Yaesu radio are discussed there. 73 Roger VE7LB |
FRG-7 main Tuning Drum issues.
I recently added several FRG 7s to my receiver collection and while both are fairly minty cosmetically one of the units has an issue with the main KHZ tuning drum. It seems to hit the limits before reaching the end of the scale. So for example tuning down towards 0 you might hit a Soft stop at about 50khz but can continue to tune down with resistance to 0. Then if you reverse and tune up to 1000khz you meet resistance at about 900 but can continue to tune until you reach a full stop. So it’s like the stops are see-sawing back and forth as you tune from end to end. I believe there is some sort of rotating stop system being used but have no info on how to set it up. The rig I have?that works normally has sufficient overtravel on both ends of the scale before hitting hard stops..
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