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But alarm/security gel packs I assume you mean used ones that have been in float for long periods of time. Joe? Sent from AOL on Android

Making up a NiMH pack without the tray (file / sand a corner and solder) fits fine with any model of NIMH. Avoid ones claimed to be 2700 mAH or higher unless you know they are good. I've had to

Yes, common on domestic VHF-FM radios, though they may have a 300 ohm input or a 75 balun. The only small innovation/variation on this (as with G5RV) is using a specific length of twin as a matching

That's a draconian theft of Intellectual property unless the Author still has all rights and the ARRL is simply getting non-exclusive publishing rights.

In my view, the internal battery storage compartment is superior to the alternative, which is some kind of proprietary backpack style lipo. I find that the FT817/FT818 internal battery storage is

Except that 13 volts is too low for cyclic use. The lower voltage is intended for standby use. At least another volt higher will get you a fuller charge.? Each manufacturer has their own max charging

Thanks Ken. Good insight. Mike WA1MAD

Thanks Andy, I've ordered the Windcamp battery, door kit a few days ago and today on Prime day, ordered 4,18650 batteries, a 3 cell holder and charger. My "plan" is to incorporate the 3 batteries and

Hi Joe, I agree it was a failure. I wanted to use the space for 18650's, but it was a millimeter too small in each dimension. But Martin admin says he's printed a cell pack and got it working. I

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

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

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

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,

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

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

Thanks all for the very splendid advice cheers Tony

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

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

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

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??