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FRG-7 main Tuning Drum issues. 2
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 ( h@ve ) that works normally has sufficient overtravel on both ends of the scale before hitting hard stops..
Started by Gerald H. @ · Most recent @
FRG7 LED upgrades. 4
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. The result. The leds are less warm compared as the soft glowing original light bulbs. Maybe some red / orange dye could warm it up a little. When everything works out, I will publish the STL file on my website for download to print you own spare parts to keep your Frog in good shape. https://www.ph2lb.nl/blog/index.php?page=frg7-led 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 https://www.ph2lb.nl/
Started by Lex PH2LB @ · Most recent @
Lock 4
What voltage does the Q111 emitter have to have for the Lock led to turn on?
Started by Rafael Ruiz cloute @ · Most recent @
Mando sintonizador para FRG-7 4
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
Started by Rafael Ruiz cloute @ · Most recent @
Green/Red LED Lock Mod 5
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.
Started by David @ · Most recent @
New caps in a FRG-7 5
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
Started by Rick @ · Most recent @
Find Files Section 2
Hi. Trying to locate the FILES section. I was subscribed to the .io group, but don't seem be getting full access. I re-subscribed. Info says moderator approval not required. Will see if my first post approval get me access to FILES. Tnx
Started by Greg @ · Most recent @
Replacing T101
I had to replace T101 in my FRG. The small winding (the one closer to the antenna input) turned out to be interrupted, so I couldn't receive any more in the A band. My attempts stopped a long time ago, so at present time I can't recall all the steps I made to set up a home-made replacement for that transformer. For sure I couldn't use the original tiny coil former. The main winding might even have broken off, while I was handling that delicate component. Both windings, in fact, were made of extremely thin enameled wire. I made my deductions concerning a possible value for the parallel inductance in the preselector (the main winding). I considered the frequencies involved for the A band and the maximum and minimum capacity the variable air capacitor may give, considering how it is used for the A band (I inspected the schematic). Signals on A band came back, but I had to face an imperfection: readings on preselector's scale after adjusting are not coherent with the received frequency readings. I asked for a test a friend of mine owns a FRG-7 as well. So I eventually concluded the mentioned behavior is not normal. Has anyone here possibly faced and fixed the same issue? So far I couldn't even find the service manual, but I suppose the alignment procedure for the preselector might be acting on the inductance to tune at the lowest frequency of A band, and acting instead on the trimmer capacitor to align the preselector around 1.6 MHz. I've in mind to get back to work with that receiver. Meanwhile, I tried to ask here, after realizing this is a new place for FRG-7 owners after the Yahoo Groups service was discontinued. Thanks in advance! A.
Started by Andrea IK0RNT @
Yaesu frg-7 red power rocker switch 5
Has anyone got a spare on of these? Mine is very wobbly and about to fall off!
Started by Steve @ · Most recent @
Filter mod - need help 5
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
Started by Phil Brennan @ · Most recent @
File /FRG-7 with non GAR-7 Digital Readouts/FRG-7 KRS Display/KRS FRG-7 Displays.pdf uploaded #file-notice
The following files have been uploaded to the Files area of the [email protected] group. /FRG-7 with non GAR-7 Digital Readouts/FRG-7 KRS Display/KRS FRG-7 Displays.pdf By: Roger VE7LB Description: Found in 1983 Radio West (California) Catalog. About 4 different versions of KRS Display
Started by [email protected] Notification @
FRG-7 Caps 4
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
Started by Rick @ · Most recent @
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
Started by Roger VE7LB @
moth balled yaesu 2
don't know if there is a forum for the FT 757, so will give this forum a try. Question. Does anyone know if the FT-757GX II have a back ground light for the S meter? Since my unit has none I'm wondering if I should take it apart to find a burned out bulb or some such. 73
Started by Syd @ · Most recent @
Link to old FRG-7 mod page. 2
I'll try to start putting some FRG mods and reviews into the file pages soon. Here is a link from the past that still works, too bad they didn't complete the ambitious start they made. http://www.monitor.co.uk/radio-mods/frg-7/frg-7.htm Jim, KA6TPR
Started by Starsekr @ · Most recent @
Counter plug on rear of my FRG-7 7
Hello FRG-7 users, i have one heading my way and on the rear there is a port simply labeled "counter".....According to the prior owner, he said " Gilfer Shortwave and Electronic Equipment Bank were big shortwave radio stores back in the day and they did mods to Frog 7s to take a digital counter." The thing is I cant find much information out there on what kind of digital counter it could take and if its something others here have seen. Thanks, Lou
Started by Louie C @ · Most recent @
Deaf FRG-7, Please help 8
Hi, I have an FRG-7 that has become completely deaf, on all bands. I seem to recall reading somewhere that there is a part of area of the radio that, of pressed on, can wake the set back up. Can someone tell me where that might be? Thank you, Arthur
Started by Arthur Smith @ · Most recent @
WTB Good Working FRG-7
My Frog finally gave up the ghost. Does anyone have a good, solid working Frog that they don't think is worth the Moon, or, eBay prices? I'd love to buy a replacement. Please let me know. Thanks, Arthur
Started by Arthur Smith @
LOCK and Preselector problems ... 4
Hi everyone, after a while I turned on my FRG7 and found two surprises ... the first : the led lock switches off regularly only from 14 MHz to go up, under 14 MHz up to 10 MHz it goes off but not in a defined way, from 7/8 MHz to go down it doesn't go out anymore, even if it is possible to hear the HAM in 40 meters without problems. I have seen in the manual that VR102 can be adjusted for correct alignment, I have to try. Any suggestions from you about this problem? the second : the preselector has no effect, turning the knob no longer has any "DIP" points in any range. Any suggestions from you about this problem? thanks and best 73 Luca IK2NUQ
Started by IK2NUQ - Luca @ · Most recent @
MHZ selector off by one MHZ 9
Hello all, i just picked up my first frg-7 and one of it s problems is the MHZ selection dial is one MHZ higher than the received frequency. in other words to tune in 10.xxx i have to set the MHZ on 11 not 10. does any know what may cause this to happen?
Started by Tim L @ · Most recent @
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