开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
Date
Re: FT-817 almost powers up
Hi It has been a while since i read about this sort of fault but i do remember someone saying that there is a common mode filter in the power rail at some point and that with a reverse polarity feed
By Mark · #113253 ·
Re: FT-817 almost powers up
Hello, just my experience from this week. After a repair and a mod (SEL encoder, and Sotabeam filter) everything was working fine. A few days later I tried to power up the radio and I wasn't working
By Simone IU3QEZ · #113252 ·
Re: FT-817 almost powers up
I would also check D1085 and T1035- If they have gone open then the DC input wouldn't work. Kindest regards, Doug Jackson em: doug@... ph: 0414 986878
By Doug Jackson · #113251 ·
Re: FT-817 almost powers up
Yeah the fuse next to the three electrolytics was the first thing I checked. It's conductive.
By Bill W1PA · #113250 ·
Re: FT-817 almost powers up
EA4GPZ has a great article on replacing the Internal fuse within the FT817. https://destevez.net/2016/04/replacing-the-fuse-f1002-in-the-ft-817nd/ I damaged my own fuse when I reverse polarised the
By Doug Jackson · #113249 ·
Re: FT-817 almost powers up
with power plugged in ? --- yes. If I remove the power and use the battery, the voltage readings seem correct. In the original post I was measuring from the 817 case to the 13.8 line on the main
By Bill W1PA · #113248 ·
Re: Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Here is link to the recording- https://youtu.be/dH5gsA1CZSc
By Anthony Luscre · #113247 ·
Re: Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Unfortunately, the message of the passcode change to RATPAC did not get out to everyone - ratpac.us/zoom [email protected]> wrote:
By Anthony Luscre · #113246 ·
Re: Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Hi Anthony;? No way was I able to log into the 2nd week of Zoom; first week, no problem.? It kept asking me for the password which I understood as "WEDNESDAY".? But I will plan on watching it on
By Karl Schwab · #113245 ·
Re: FT-817 almost powers up
b, Is the VOM reading with the power connector plugged into the FT817. If you do then I would think the connector has lost it's connection to the FT817 ground/neg supply connection.? If not in the
By Ron Wright · #113244 ·
Re: FT-817 almost powers up
Hello Bill I do not have a circuit (schematic) for the 817 here but I do know that the much earlier FT290 and FT690 had a reverse polarity diode in the negative pole of the DC power connector. If
By Denis Brown VK6AKR · #113243 ·
Re: FT-817 almost powers up
Also, what fault would cause a VOM voltage reading of 13.8V from the DC barrel (-) to the 817 metal case?? (same radio)? Do I have a shorted cap? b
By Bill W1PA · #113242 ·
Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas watch the recording now- https://youtu.be/dH5gsA1CZSc Join us live for week 3 Oct 26- http://www.ratpac.us/zoom View Week 1 Recording
By Anthony Luscre · #113241 ·
FT-817 almost powers up
I have a 817 I am working on that I picked up at a flea. * on battery, when POW-ON the display briefly starts (solid pattern on LCD) and shuts off (and I hear a relay click) * on external power, the
By Bill W1PA · #113240 ·
Re: Chinese FT-817 TCXO?
James, Thanks For The Information, Nice low cost Method.? Checked My Two FT-817 and I am Happy That The 4 year old China TCXO are Still in Specification, On the Other Hand the recently "Purchased "
By Steve Sawicki · #113239 ·
Re: Watch "Testing Chinese HF linear amplifier DIY kits 70W SSB linear HF Power Amplifier For YAESU FT-817 KX3" on YouTube
Thanx Douglass.
By Doc Sarvis · #113238 ·
Re: Any reviews?
I found the build video. 70 Watt Amplifier Kit Build | | | | | | | | | | | 70 Watt Amplifier Kit Build | | | Looks like a decent kit. I think I'll go for it and get one.
By Doc Sarvis · #113237 ·
Watch "Testing Chinese HF linear amplifier DIY kits 70W SSB linear HF Power Amplifier For YAESU FT-817 KX3" on YouTube
https://youtu.be/FSfFhoQr0c8
By Douglas Richards <ve3ffr@...> · #113236 ·
Re: Any reviews?
A link would have been nice... Ken, N2VIP
By Ken N2VIP · #113235 ·
Re: Chinese FT-817 TCXO?
Easy way is to use WWV 10 or 15 mhz and tune down 1500 hz on LSB. That should make an audio tone with the radio tuned LSB to 9998500 (10 mhz) results at 1500 hz. Use one of many computer programs to
By James Redding WA9VEZ · #113234 ·