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A network of 3D printer owners the print replacement knobs?
Hello all, As some of you might know, I have designed 3D printable replacement knobs for the FRG-7 switches and have them available through my website (https://ph2lb.nl/webshop/order.php) . I often get request from the US and other countries for these knobs, but international shipping (letter box package up to 100 gram) costs Euro 12,00 (aprx USD 13,00) now a days which I find ridiculous expensive. Especially when a set of 2 knobs cost Euro 1,00. So because I have made the designs public, everybody who has a 3D printer can print them., I want to set up a network of 3D printer owners who are willing to do some on-demand print for replacement knobs for help there fellow country frog owners. I was wondering what your all think of the above. -- 73 Lex PH2LB https://www.ph2lb.nl/
Started by Lex PH2LB @
FRG-7 Current draw using an external 12V PSU 5
Hi group, and thanks for having me! Anyone who can tell the current draw for a FRG-7, when using an external 12V PSU? I have a nice linear little PSU, but it's only capable of delivering 0,9 A continously. Thanks, Hans / LB6GG Sandnes, Norway
Started by Hans Ostnell @ · Most recent @
Need more selectivity 9
Hi, Y'all! Long time Frog owner but first post here. I'm hoping the collective can help me put this radio into mainstream use in the shack. I have been trying to pair this up with a Heathkit DX-60A I just acquired and after a few attempted CQs it became clear selectivity is lacking. I have had this radio for about 20 years and I re-capped it not too long after I bought it and besides the re-capping it is bone stock. Are there any mods that might help with the selectivity like a crystal filter or some other wizardry. Thanks and 73, -- Justin B. KI5GKD
Started by Justin Bowser - KI5GKD @ · Most recent @
Not working and deaf 7
I have a FRG-7 that has the following non working symptoms. The Mhz led can be tuned out on the upper shortwave bands only, and a few stations can be heard at very low volume. The Mhz led does not go out on the lower bands and and no stations are heard. Any clue on where to look for the fault would be appreciated.
Started by Chris Rogers @ · Most recent @
Almost ready to give up but... 25
..I thought I'd give the group a try. Friend gave me an old FRG7 to fix for him. No fine tune on the front & has some corrosion on the chassis. Symptoms: * Only a light hiss from the speaker with volume turned all the up * No stations or s meter movement * Can hear the 455 IF (I think on 1455) if I mess with LOCK So I check for the obvious: * PS voltages OK. Electrolytics ESR are fine. * All connections seem fine I suspect Q101 & find only G2 is working & replace it. No change. When I was checking component voltages I notice Q102/103 Emitters somewhat high at 2.5 & 2VDC Also find that Q401 has 5.2vdc on G2 (vs 2.7). I pull 401 & it checks fine. I start searching for cause & misread the schematic looking for R133 to find R135 on the RF board completely missing (missing from Yeasu's component view also??). So I install it, no change. I then check Q407 voltages (connects up to Q401) & they are fine. Further inspection of the IF/AF board I find a big solder blob left behind from another incompetent tech. Remove it & no change. I do insert a 3MHz signal into the the IF/AF board & get a loud report. So I find 3 issues & still have a non working radio. I am very surprised how quiet the AF is even at full volume. I know it can get pretty loud when I inserted the 3MHz. Any suggestions before I return the unit with a sad face. Thanx - Bob W8RMV ps - is there a good (cheap) source for 3SK40's?
Started by Bob W8RMV @ · Most recent @
Antenna recommendation for nursing home setting 13
I've been prepping my FRG-7 to lend to a gentleman who lives in a 12 x 13 ft room in a nursing facility.. I'm looking for suggestions of what sort of antenna to set up for him. Do I need to connect to all 3 ports or just one? I modified the radio today and installed an IEC socket with integral EMI filter mostly to improve the ground situation and simplify cord handling. Thanks, Reg
Started by Reginald Beardsley @ · Most recent @
Very very useful thread
I think this thread would be useful to anyone working on an FRG7 https://antiqueradios.com/forums/viewtopic.php?t=370837
Started by MikeM @
Sacrilege 2
My upgraded FRG7,
Started by Pentagrid @ · Most recent @
Original tuning knob? 5
Hi, Can anybody tell if this Sommerkamp FRG-7 tuning knob is an original design for this receiver? I don't see any pictures on the internet with this kind of tuning knob. Tnx! 73 Wilbert
Started by Wilbert PA3DAE @ · Most recent @
What mod it this? 8
Hi all, I obtained a FRG-7 which is in working condition but needs still a lot of attention. An extra PCB is added and I really do not know which mod this is. I hope you can help me! There is also a lose red wire which could be connected but.....first I would like to know what mod this is so I can find more detailed information and connect it the way it should be connected. They also modified the power with a 7812 and....cut of the external 12V cabling. Cleaning rotary swithes needs to be done and.... Does anyone recognizes this? best 73' s Kees PA1CJT
Started by Kees Taverne @ · Most recent @
Ed Shaw mods
Ed Shaw was a well known DXer in the 70s and 80s and had a column in NASWA I found a column in which he described the mods he did on his FRG7 I put it in the mods folder, check it out
Started by MikeM @
File Notifications #file-notice
MikeM <mmaghakian@...> added folder /7 - FRG-7 Mods/Mods from Ed Shaw The following files and folders have been uploaded to the Files area of the [email protected] group. /7 - FRG-7 Mods/Mods from Ed Shaw/24FFFAC9-8663-45D7-B3B0-9900C62CA83A.png By: MikeM <mmaghakian@...> The following files and folders have been uploaded to the Files area of the [email protected] group. /7 - FRG-7 Mods/Mods from Ed Shaw/FRENDX-1982-11-OCR-Page-0013.pdf By: MikeM <mmaghakian@...> The following files and folders have been deleted from the Files area of the [email protected] group. /7 - FRG-7 Mods/Mods from Ed Shaw/Ed Shaw mods By: MikeM <mmaghakian@...>
Started by Group Notification @
Unkown speaker related switch 2
Fellow Frogers, Just picked up a new-to-me FRG-7 and noticed what seemed to be an unkown mod consisting of a DPDT slide switch (S-7) w/ two resistors (R-18 & 19), connected to the internal speaker. But surprise, some of the schematics show these components in the lower right near the speaker. However, they are not on the parts list, nor are they mentioned in operating / calibration instructions or circuit description. There are no related labels on chassis or cabinet. The switch is physically attached to a frame brace in the upper right rear of the chassis, just below the white battery plug/socket. Switch is poorly positioned and clearly not intended to be accesssed often or easily. The resistors are either switched out of circuit, or placed in series w/ speaker: one between audio & speaker, the other between speaker & chassis gnd. The only in-circuit effect seems to be some lowering of the volume. Serial # 300585 and apparently this radio lived in Canada at some point. Any idea what this undocumented "feature" is about?
Started by Greg // KE7NJS @ · Most recent @
Looking for main tuning knob. 6
Wondering if anyone has the main tuning knob they would be willing to sell? Andrew
Started by Andrew @ · Most recent @
Aftermarket Speaker Replacement
I am looking for an aftermarket speaker replacement for the main speaker on the FRG-7. Has anyone had success with finding one?
Started by Andrew @
L101 pin not soldered
I just took delivery of a fixer upper FRG-7. I did a full alignment but was still disappointment with the results of this receiver. So I put in on the bench and found that L101 (4 coils on a rod after the RF AMP) the first pin was not soldered to the coil wire. See picture: After soldering I am now getting a 20-30 dB improvement in reception. At 1.5 MHz -55dBm gave me S9 before soldering now I get -78dBm giving me S9. I have a question do others have this coil not soldered and only wire wrapped. I am just curious if this was Yaesu's manufacturing process or if this was just forgotten to be solder and thus a defect. This is my first post so it might take time to post. Thanks for your time. Bruce, WB6IZG
Started by Bruce Forsberg @
Another 3D printed knob for the FRG-7 added to my collection. 2
Recently I got a question from a fellow ham if I have a replacement knob for the Fine-Tune. Unfortunatly I didn't but told them that I wanted to 3D design all the knobs of the FRG-7. So during my holiday I started to work on the 3 knob of the FRG-7. The one which can be used for the Preselect, Mhz and the Volume. My first prototype print (0.12mm / 100% infill) next to a original knob of my FRG-7. I'm quite happy with the result and will continue working on the others. So when you need replacements knobs, stay tuned. Soon they will be ready and released on my website. https://ph2lb.nl/blog/index.php?page=yaesu-frg7-mods -- 73 Lex PH2LB https://www.ph2lb.nl/
Started by Lex PH2LB @ · Most recent @
FRG-7 lock light problem 7
Hi there. My friend very kindly gave my his old FRG-7. It works really well and I love it! It has one problem. The lock Led will not work, unless the radio was turned off and sitting for a few hours. Then, the led will work but only very dimly. The led will continue getting dimmer and after a few minutes it will simply stop working. The actual bulb is fine, I know this because when powering up the radio, it will light up for less than a second at full brightness. It's a strange problem. It seems like as the radio warms, up the led stops working. Other than that, everything works fine! I will appreciate any help, and I thank you in advance.
Started by yitzimarks@... @ · Most recent @
FRG-8800 keypads
Hi, I hope it's not too off-topic to discuss the 8800 here as I can't find a dedicated group for this RX. Mine has problems with excessive contact bounce in the numeric keypad. What is the construction, is it membrane keypad or are there individual switches that can be cleaned? Apart from this and the occasional PLL lock issue when it gets to warm, I'm happy with how it performs. 73 Nick
Started by Nick G4IRX @
FRG-7 arrival 5
well, my FRG-7 arrived today poorly packed and the volume knob smashed the power cord cut the S-meter seems stuck it does receive there is only one possible use for me the creation of FRANKEN-FROG !!!!!
Started by MikeM @ · Most recent @
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