dan 07:29:17 3/23/2021

Hi Steve, FR-50 chassis bottom view photos are now ready. Browse them on http://www.noobowsystems.org/restorations/fr-50/bottomviews/fr-50-bottomviews.html Enjoy! dan From Tomioka , Japan

Steve A 06:18:05 3/15/2021

Hi from KI7WQH in America. I sent you an email because I'm trying to find an image of the underside of a FR-50. I have an FR-50 that I am restoring but there are disconnected wires and I'm not sure where they go. Thanks! Steve A From AZ , USA

Michael Marcus 04:32:00 8/22/2019

Thank you for sharing your knowledge and maintaining this website. It has been invaluable to me in restoring Lafayette Models HE-80, HA-230, and HA-225. In 1964 I was 12 years old and longed for a Lafayette Communications Receiver. It's taken me 55 years before acquiring these beautiful Trio Receivers. Earlier this year I restored a HA-230, and just acquired a HE-80 and HA-225 for restoration this Fall Season. I also have a PreCon, HE-73, from my friend Kiyo. His situation is very similar to yours as he just moved from his house in California, to an apartment in Japan. I also have recently moved from my house to an apartment. It's a challenge to pursue our hobby in a tiny space. All the best to you and your family, Don. Mike KG7M Michael Marcus From Portland, Oregon , United States https://www.qrz.com/db/KG7M

Lovji 17:47:45 3/09/2019

I own a Sony 5900W that I had bought in the 1970's while on a trip to Tokyo. I bought it in a shop in the famous Akiabara district. At that time I bought it because I wanted to listen to Hamradio frequencies. I still own the radio and am very happy with it. The information I found in your description is priceless, Very well done. Thank you. 73's, Lovji N2CKD Lovji From Cortlandt Manor, NY, , USA http://Listed in Hamradio QRZ.com page

Stefano 05:16:37 11/14/2018

Thank you for information about restoration on SBE SB-34! Stefano From Venice , Italy

Giorgio 15:13:06 1/17/2018

Nice site,a lot of informations very useful for electronics enthusiast !! Thank you and greetings from Italy !!! Giorgio From Busto Arsizio , Italy

Keith 07:18:42 5/09/2017

Great website really interesting. Also a big help for me restoring a Trio JR-60 / Lafayette HE-80. Its a challenge. Excellent work. Keith. Keith From Melbourne , Australia

David White 10:16:26 1/02/2017

Thanks for the restoration information on the SONY ICF-5900W, I too have a few of these radios and enjoy them very much. Several years ago, I thought the Panasonic RF-2200 was the best of the two radios and still do though I’ve changed my opinion on the SONY to much more favorable due to using the radio not that I can compare the two. I think SONY was ahead of the game for portable SW radios back in the mid 70’s with the dual conversion IF using the FM band’s 10.7MHz as the first IF….it works GREAT!...Kudos to the SONY engineers…the 5900W is still a Great radio and I’m proud to have a few in my collection… David White From Cheyenne, Wy. , United States of America http://Radio

dan 08:41:46 9/06/2016

Stepen, thank you for visiting NoobowSystems. Running 5900W with USB power is an interesting idea. I think it is technically possible, by using a silicon diode as a 0.6 voltage dropper sounds feasible. Although I haven't tried this yet, I suppose the problem would be a digital noise on the USB power bus. If a USB outlet of a PC or a cigar-plug -to-USB adapter is used this would be a headache. Having appropriate filter such as large electrolytic capacitor and cored-coil may be necessary. Have fun with the radio! dan From NoobowSyatems Lab. Tomioka , Japan http://www.noobowsystems.org

Stephen 00:19:13 8/29/2016

I found your wonderful information about restoring the Sony ICF 5900W receiver. My purpose was to find information about the DC operating voltage range. Your information page does say there is no overvoltage protection, so use voltae regualted 4.5 as specified by sony. My question is: Can I run power to the radio from a USB 5 volt connection? Or, from a USB connection inserting a small diode inline to drop the voltage about .6 volt? (Years ago I ran a daisy chain of diodes to drop the voltage from 12V solar to approx. 4.5V into the ICF5900W. these days I'm more cautious.) Has anyone done this? Hoping for advice. thank you. Stephen , Australia

Peter Filiberti 09:57:15 1/24/2016

Thanks for showing the info on the TS-600 restoration! I am also working on a restoration of 2 TS-600 I found in pretty good condition inside an equipment cabinet stored outside for over 10 years in Hams QTH now SK. I helped family to clean out ham shack and found these units and am restoring. They were heavy modified for custom use as a data link transceiver for weather station telemerty for University of Denver Colorado man years ago. I have almost completed, I can receive fine and TX good! 73 de KF7PSM Peter Filiberti From Las Vegas, Nevada , USA http://www.btstream.com

Roger Dieterich 08:40:32 5/10/2015

Good Day Dan, I was drawn to your restoration of the SBE-34 as well. I am just beginning a similar restoration. Should I even attempt to power it using low voltage from a Variac or proceed immediately to replace electrolytic filter capacitors? Cosmetic condition is good with only minor storage corrosion on the exposed power transistor cases on the rear. Should I just trace the schematic or do you have information on creating a 12VDC power harness? Kind regards, Roger Roger Dieterich From Kenmore, Washington , US

Myles 14:44:50 3/05/2015

Hello, and thank you for making this website! I discovered your website when I was searching for information about the Maxitronix 500 in 1 Electronics Lab. You have done a wonderful and very useful service here by documenting your exploration with that kit. I have also just discovered your guestbook and I see that there is discussion about the projects in here. So thank you also for making a forum for people to exchange ideas and learn about radio electronics and these kits. I have not read all the messages here yet but would like to ask one question: The microcontroller in my 500 in 1 lab is an 64-pin NEC D753106 and I am trying to find what is meant by the LCD displaying the message "- - ILL - 02" after the stop instruction is processed in one of the early book 3 projects (maybe project 404?). I cannot find the official meaning of the display "ILL". It does not appear in the instruction set from the kit manufacturer, or on the NEC datasheet. It does not make sense to mean "ILLogical" or "ILLegal (instruction)" so I am puzzled. Has anybody found what this message means? Thanks again and I will continue to read and enjoy the feedback here. Myles From Toronto , Canada

Peter 02:18:56 12/15/2014

...meant SB-34 in my other entry.... I found out that the SB-34 doesn't work; the TX line is always on (Blue wires on IF board are +11V; gray wires are 0V) am trying to see why.... Peter From Lux , Lux

Peter 00:01:52 12/10/2014

I am, as you, in awe of the design of the SB-23. I just bought one and brought it to my QTH in Luxembourg to get it going. A few days ago, in Boston, I plugged it in and all I could get was a hum from the speaker. Over this weekend, I will try to get some real stations from the speaker! Will keep you up to date on what I find. Again thanks for all the tips! 73's, Peter LX1QF/KH6VP Peter From Luxembourg/Hawaii , Luxembourg http://vekinis.com

Tom 12:05:05 10/01/2014

I am interested in restoration of a Panasonic RF 2200. Tom From Maryland , USA

Robert Robinson 12:53:37 2/19/2014

Good site. I have a Sony ICF-5900W. Good condition, except volume is very low. Had it examined and was informed the problem is with Part L25, 1-405-714-00, BFO Osc. Technician could not find a replacement part; not available from Sony. Any suggestion on where I might find a suitable replacement part? I have had no luck searching on the Internet. Robert Robinson From San Diego , United States

David 22:33:24 11/22/2013

Good day Dan, You have a great site. I was drawn to it by your SBE 34. That rig was an excellent one for me, mobile more than a year. Some of your life experiences regarding electronic equipment are parallel to mine. For instance, As a child , I was given a two transistor, reflex circuit radio. I listened to it while gardening weed pulling. My father built for me a kit VOM, that led to a life long avocation. Your efforts and collection, knowledge of the variety of electronic equipment surpass anything I will achieve. My father brought home several trade journal for the electronic industry in Japan. I was very impressed by the finished products and components described. During my childhood, my parents bought a Sony transistor TV, 5 inch. It had an superb finish, appearance and spectacular picture, and sound. Best of luck to you and your family. David From San Diego , USA

Steven Lohse 16:59:16 9/17/2013

One more thing: Machine translation of the Japanese only pages to English is sometimes poor and sometimes funny but I can usually understand your meaning. Sometimes takes a few reads but I can usually figure it out. The information is there so thank you. Steven Lohse From Corvallis Oregon , USA

Steven Lohse 16:52:18 9/17/2013

Wonderful website. Thank you for showing your restorations. Because of the way you have documented your radio projects I was able to get the film dial out of the ICF-5800 I am working on the replace the capacitors hiding under there. Many thanks for the help and best wishes!!! Steven Lohse From Corvallis Oregon , USA

Dave Butler 08:53:55 5/15/2013

Very interesting, particularly the TS700 item. I am at present converting a TS700 to 6 meters. I did not know there was a TS600 but now I know that my frequency choices for the hetrodyne crystals is the correct way to go. An english translation would be helpful!. Dave Dave Butler From Bristol, UK , United Kingdom

Dana Burgess 21:24:55 4/25/2013

I have a Panasonic RF 1150 6 Band radio I would like to have it restored. Do you know anyone in the Arizona area that would do this type of work? Dana Burgess From Sun City AZ , USA

Ron Kautz 02:47:21 6/28/2012

Wonderful website, very enjoyable, I also have a PS250 2006 less than a week, not many of these in New Zealand, perhaps only one. Also love the radios and test equipment, ham radio os my other hobby, 73 ZL3RCK Ron Kautz From Rangiora , New Zealand

Henry Zeps 23:57:47 1/31/2012

Hmm, yes well if there is anyone who would fix a radio you had better have a poc for me. Henry. Henry Zeps From Sydney , Australia http://none