开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
Re: FT 817 repaired
I don't think the issue is that the boards are "prone to fail" instead I think it's a matter the use case of taking the radio in the field, rigging up temporary/compromise antennas, then Mr. Murphy
By Ken N2VIP · #115454 ·
Re: Feb QST article A Portable Twin-Lead 20m Dipole
While it is stepping over the line to copy and distribute, it would have been more appropriate to just link to the article.? There is nothing special about a twinlead dipole, there have been reprints
By Al WB9UVJ · #115453 ·
Re: FT 817 repaired
Thanks Ron. I wonder why the PAs fail. Hi SWR? Shorted coax? I read about the FETs going into self oscillation if internal battery is left in place. I also think I read that ND and 818 are better
By Michael Davis · #115452 ·
Re: Feb QST article A Portable Twin-Lead 20m Dipole
Here is site for 20m folded twin lead dipole Ham Radio Site - <20m Folded Dipole> | | | | | | | | | | | Ham Radio Site - <20m Folded Dipole> Neue Seite | | | 73, ron,
By Ron Wright · #115451 ·
Re: Feb QST article A Portable Twin-Lead 20m Dipole
I really thing ARRL and QST dont mind someone making a copy of an article.? Would mind if you were to start selling it.? Like buying a book or getting QST, you can use the info in them. Even posting
By Ron Wright · #115450 ·
Re: FT 817 repaired
I have replaced my 2004 FT817 PA twice.? Ordered the board from Yaesu and installed it. I am EE and have done a lot of electronics although in work relied on techs to handly most of that.? Seems
By Ron Wright · #115449 ·
Re: Home Power Supply for Yaseu Ft 818nd
Thanks all for the very splendid advice cheers Tony
By Tony Murphy · #115448 ·
Re: FT 817 repaired
That's great, thanks for sharing your success with us. I suspect you're right about saying it was for an FT-817. Glad she's up and running, enjoy! Ken, N2VIP
By Ken N2VIP · #115447 ·
Re: Feb QST article A Portable Twin-Lead 20m Dipole
The article is from behind a paywall (ARRL member website), that some one downloaded it, stripped of the copyright notice on the cover page, then made it publicly available doesn't make it "public
By Ken N2VIP · #115446 ·
Re: FT 817 repaired
It was easy. Desolder two small coax cables, power jumper, ground jumper and other ground. Tack solder a wire to the pad the positive jumper connected to and put a milliamp meter in line. Set the
By Tech Guy · #115445 ·
Re: Feb QST article A Portable Twin-Lead 20m Dipole
Would the matter be considered "moot" if everyone got a link to the (publicly published) article and then they could just make their own copy of it??
By wa6ixi@... · #115444 ·
Re: Internal battery FT-817ND
I seem to recall that someone fitted an Elecraft T1 automatic antenna matcher into the battery compartment of an 817 some years ago. 73….Eric VK2VE. Sent: Tuesday, 8 October 2024 09:10 To:
By Eric van de Weyer · #115443 ·
Re: Internal battery FT-817ND
Ha ha, that space for a tuner would be wonderful. I’m using the LDG 817 tuner in hopes It’ll keep me from “cooking” the finals. Thanks Mike Davis WA1MAD
By Michael Davis · #115442 ·
Re: FT 817 repaired
That’s great news. Now for my 2 week ago question that has yet to be answered. Was it difficult? Were instrument adjustments necessary? Are you a repair guru and an smd type guy? Thanks Mike Davis
By Michael Davis · #115441 ·
Re: Internal battery FT-817ND
Way back in the day, I knew a fellow who used the space for a memory keyer, CW filter, and something else. ?He had to use external batteries anyway, so that saved some space for other things. With
By James Todd · #115440 ·
FT817 battery
Martyn, I was examining the 18650 battery that I have. 3 of them in a package looks like it could be attached, if not inserted in the compartment. I haven’t looked at the wiring, and don’t know
By Michael Davis · #115439 ·
Re: Internal battery FT-817ND
I too favor gel batteries. Low initial cost is a driving factor along with a simple charging? protocol. If one is concerned about extra internal heat being generated, just put one or two 5 amp
By Joseph Wonoski · #115438 ·
Re: Internal battery FT-817ND
Just another small note. Just about all rechargable cells like AA type are over size physically. Bulging battery compartment syndrome etc. ENELOOP cells use the correct dimensions as well as having
By G0FTD · #115437 ·
FT 817 repaired
I ordered a final board from a store in Germany for the 818 and installed it. I made several contacts to Chicago and Connecticut and around the Southeast on 40 meters. It was a good day for my hamfest
By Tech Guy · #115436 ·
Re: Internal battery FT-817ND
I 3d printed the extended battery cover and 18650 holder, it was on thingiverse. It works very well and has a charger port for a proper 3s LiPo charger.
By Martyn Bell M0TEB #admin · #115435 ·