Re: Recommendations for a replacement battery pack for F-817ND
Yes you can use the internal batterycompartment, however my experience is that it won't last very long.
Besides that the TX power is limited when using the internal batteries.
My recommendation would be to invest in a new external gel battery, like the example-image, and use that instead.
It lasts longer (7.2 Amp) ¨¢nd you will have the bennefit of full TX power since you will be feeding the power through a regular powercable.
The variety in available amps is huge, but the 7.2 Amp version usually works fine.
Just my 5 cents. 73 Martin - PA2RUS
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Re: High SWR on VHF / UHF
Dave your comment had the brain firing this morning. I have had the 817 put away for some time and just set it up in the shack the other day. I used to use VHF/UHF on the front antenna because the rear was connected to the HF antenna. I checked menu 7 and it was in fact on front but I was connecting to the rear. I changed it the rear and I still had high SWR. My thought was maybe it is the Z100 now.
I switched menu 7 back to front and connected a jumper to the amp. That has corrected the problem. Little bit of old age and OHS!?
Thanks Dave,
Steve
VA3FLF
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Re: High SWR on VHF / UHF
Dump it into a dummy load and see if you still have high SWR.
Don K8EAA
Hi have you tested both antenna sockets, Thanks Dave 2E0DMB
I have a RFC 2-23 RF concepts amp that I wanted to use for 2 Meters with the 817. I have high MAX SWR on 2 Meters on the rig SWR meter.. Thinking it was the amp, I connected straight to my antennas, (2 Meter yagi and a X50 Vertical) both have max SWR on 2 and 440.
I have power out it appears. I tried going directly from the rig thinking might be the Z100 tuner. Still the same. I took my SWR Meter and checked the VHF antennas and they are both around 1:5 to 1.
When I connect to HF, 6 Meters all the way down SWR is good. Faulty SWR meter on 817 or do I have an issue with the rig? The PO meter changes levels when I switch power levels, and ALC seems to adjust fine. I am puzzled. Any ideas?
Steve
VA3FLF
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Re: Recommendations for a replacement battery pack for F-817ND
I used the WinCamp replacement for a couple of years and was very please with it - then it stopped working completely (I suspect an internal fuse link gone). As I had fitted the Anderson Powerpole power input adaptor with regulator but without the by-pass switch I have assumed that the original Ni-Cad's would not charge so, for the time being, have been using it mostly with external power or receive only with AA alkalines.
Philip G4KIL
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Re: Recommendations for a replacement battery pack for F-817ND
Panasonic black Eneloop Pro's are rated at 2550mAh. I test my 1yr old battery pack at 2500mAH (B6 mini tester).
Easy enough to solder up a battery pack.
Weight is 249g
Eneloop Pros would be my starting place, given the ease of charging in the radio, and robustness against over/under charge, low self discharge (compared to older NiMH), no need for special storage charge (unlike Li), and that they are _actually_ the rated value.
[I also added a pfet across the schottky to claw back 300mV when using batteries.]
I have started using 3x18650 LiIon for long trips - lighter at 150g. They test at 2700mAh,
I have carbon covers, and I have hacked away at the chassis under the cells to get them in. Not sure if they go in a standard case, but you would only need to modify/replace the plastic battery cover to use 18650's.
So far I have found the LiIons are not testing anywhere near the 3200-3400 I was expecting.
I also have some LIPO's (labelled 4200mAh) that fit inside nicely, and they test at ~2500mAh at 212g.
BTW, I would expect those pale blue batteries have all go an SMPS in each cell, and there must be frequencies that will flatten the RX. Personally wouldn't believe the mAh rating unless I tested them.
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Re: Recommendations for a replacement battery pack for F-817ND
Not internal but works for me. I use a 3.0ah or 4.5ah Bioenno with power pole connector mod. The 3.0ah can lie on top with Velcro to bat/top 818.
I use this for SOTA and can easily activate 2 summits on one 3.0ah.
73
Erik
KE8OKM
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Re: Recommendations for a replacement battery pack for F-817ND
I made up a new pack using tagged AA cells - 1800s, I think?? I also cut the case off the original battery pack to cover them and removed the temp cut-out.? My 817 runs on the desk quite a lot, and with the external power connected.? I have had no problems with the continuous trickle charge that goes into the batts and it means it is useable whenever I need it.? I can operate for quite a while on just internal batts and the 20m whip on the BNC - even when pushed to 5w!? The batts have been in for about 2 yers now.? Soldered the tags and glue-gunned the batts into the correct shape then wrapped the cover around the new pack.
73
Mike - G8NSZ
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Re: High SWR on VHF / UHF
Hi have you tested both antenna sockets, Thanks Dave 2E0DMB
I have a RFC 2-23 RF concepts amp that I wanted to use for 2 Meters with the 817. I have high MAX SWR on 2 Meters on the rig SWR meter.. Thinking it was the amp, I connected straight to my antennas, (2 Meter yagi and a X50 Vertical) both have max SWR on 2 and 440.
I have power out it appears. I tried going directly from the rig thinking might be the Z100 tuner. Still the same. I took my SWR Meter and checked the VHF antennas and they are both around 1:5 to 1.
When I connect to HF, 6 Meters all the way down SWR is good. Faulty SWR meter on 817 or do I have an issue with the rig? The PO meter changes levels when I switch power levels, and ALC seems to adjust fine. I am puzzled. Any ideas?
Steve
VA3FLF
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Re: Recommendations for a replacement battery pack for F-817ND
Ken, when I bought them they were 45.00 for eight. Looks like they are 55 now not 60 and you can easily get 15%off by subbing to the news letter with a junk acct.?
that being said I¡¯d pay $60 for them easily anyway. The form factor is worth it to me. Good run time as well.
I do have a 3Amp Bioenno if needed for a long weekend.
-n7hex?
?
?
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Re: Recommendations for a replacement battery pack for F-817ND
? ? ? Like Kevin, I¡¯m still running my 20 year old 817 with the original finals, and other than doing the kc3vo phase reversal mod, the radio has remained untouched. I¡¯m running Eneloops in the original holder, but fused, and charging them with the internal charger. ?I run a second 20 year old 817 I acquired 10 years ago the same way.
What I¡¯d say is that I¡¯d be happier with a smarter charger, and a bit more capacity. But using everything this way has kept charging and operating simple and reliable for me.
I follow my wife¡¯s advice of trying not to let excellence be the enemy of good -for me good is enough/ but there are better solutions if ya want excellent ?There¡¯s no easy answer to your question, I think, it really depends on what you value. ?Good luck.
72 Scott ka9p Make something good happen!
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On Apr 8, 2022, at 8:20 PM, Kevin Burgess <kevinandpatty@...> wrote:
? I have a 20 year old ft817 with original finals and still works great. I gave up on internal batteries years ago. I use bioenno 3ah or 4.5 ah 12v with a PowerPole adapter on the bottom of the radio.? Best set up to date. I use same batteries on multiple rigs and have not had any issues with bioenno batteries. KR6AI? Kevin.?
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Re: Recommendations for a replacement battery pack for F-817ND
Wind amp here too.? Works well. 3ah --
Thanks,
Randy.
randy.ab9go@...
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Re: Recommendations for a replacement battery pack for F-817ND
I don't see a big problem with not using the built in charger. Just one different connection is all. Advancing technology never guarantees compatibility. And in this case yaesu chose to stay behind the times in the battery department. A deeper bottom cover by a mere ~18 mm would have allowed the use of a? 18650 pack moved indoors instead of underneath the radio. An alternative could be for yaesu to offer such a thing as an option or as an upgrade kit. If I was still working I'd have whipped one up pronto just to prove a point. ? ?Ymmv, fwiw, jmho, etc.
On Fri, Apr 8, 2022 at 8:15 PM, Karl Schwab <schwab.karl@...> wrote: But can't use the 817's internal charger to charge them.?  I use eight micro usb rechargeable lithium ion AA¡¯s made by Pale Blue Earth. See picture.?
-n7hex
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Re: Recommendations for a replacement battery pack for F-817ND
I have a 20 year old ft817 with original finals and still works great. I gave up on internal batteries years ago. I use bioenno 3ah or 4.5 ah 12v with a PowerPole adapter on the bottom of the radio.? Best set up to date. I use same batteries on multiple rigs and have not had any issues with bioenno batteries. KR6AI? Kevin.?
On Apr 8, 2022 07:30, Gene Balinski <g.balinski@...> wrote: Alcon,
? ? I'll be taking my 817ND on the road this summer and need a replacement internal? battery.
What is the latest group through regarding replacements?? I have seen NiMH batteries at 2000 mAh capacity at various places.? Are there better batteries out there? with the same chemistry ?
What is the opinion on the LiIon battery/charger/plate from WiMo ?? ? Are there any downsides ??
I see there is something similar from Windcamp, but apparently there have been some issues with their products? according to some reviews.
Any recommendations would be appreciated.??
73,
Gene? K!NR
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Re: Recommendations for a replacement battery pack for F-817ND
$60 for an 8 pack, 1560 mAh/each, recharge via usb octopus.
You pay a steep premium to maintain AA form-factor.
No, you can't charge them using the internal charger.
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On Apr 8, 2022, at 19:15, Karl Schwab <schwab.karl@...> wrote:
? But can't use the 817's internal charger to charge them.?  I use eight micro usb rechargeable lithium ion AA¡¯s made by Pale Blue Earth. See picture.?
-n7hex
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Re: Recommendations for a replacement battery pack for F-817ND
But can't use the 817's internal charger to charge them.?
 I use eight micro usb rechargeable lithium ion AA¡¯s made by Pale Blue Earth. See picture.?
-n7hex
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Re: Recommendations for a replacement battery pack for F-817ND
 I use eight micro usb rechargeable lithium ion AA¡¯s made by Pale Blue Earth. See picture.?
-n7hex
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Re: Recommendations for a replacement battery pack for F-817ND
I use 2 5200 ma RC car batteries for the FT-817.? Works very well and lasts quite a while till finally going below the required voltage of the unit.? Fairly light weight and small.
Charlie KA9HDG
On Friday, April 8, 2022, 02:33:48 PM EDT, Ron Wright via groups.io <lt_wright_flg@...> wrote:
I have seen number of negative comments on the WindCamp, also cost way too much.
I like the Bioenno LiFePO4s, they are excellent.? A 9AHr that will power the FT817 for many hours cost over $100, but I feel well worth it.? Can get LiFePO4s on Amazon for much less, I have one and has performed well, cannot say much more.? My Bioenno 9AHr has really worked out well, never run it down.? I've had for about 2 years.? Use for POTA.
73, ron, n9ee/r Ron Wright, N9EE/R Hernando Co ARES EC
BSEE Micro Computer Concepts Spring Hill, Florida
146.64 repeater, 1100 ft HAAT 352-835-5610
On Friday, April 8, 2022, 01:29:24 PM EDT, Gene Balinski <g.balinski@...> wrote:
Appreciate the response/
73
Gene K1NR
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Re: Recommendations for a replacement battery pack for F-817ND
I have seen number of negative comments on the WindCamp, also cost way too much.
I like the Bioenno LiFePO4s, they are excellent.? A 9AHr that will power the FT817 for many hours cost over $100, but I feel well worth it.? Can get LiFePO4s on Amazon for much less, I have one and has performed well, cannot say much more.? My Bioenno 9AHr has really worked out well, never run it down.? I've had for about 2 years.? Use for POTA.
73, ron, n9ee/r Ron Wright, N9EE/R Hernando Co ARES EC
BSEE Micro Computer Concepts Spring Hill, Florida
146.64 repeater, 1100 ft HAAT 352-835-5610
On Friday, April 8, 2022, 01:29:24 PM EDT, Gene Balinski <g.balinski@...> wrote:
Appreciate the response/
73
Gene K1NR
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I have a RFC 2-23 RF concepts amp that I wanted to use for 2 Meters with the 817. I have high MAX SWR on 2 Meters on the rig SWR meter.. Thinking it was the amp, I connected straight to my antennas, (2 Meter yagi and a X50 Vertical) both have max SWR on 2 and 440.
I have power out it appears. I tried going directly from the rig thinking might be the Z100 tuner. Still the same. I took my SWR Meter and checked the VHF antennas and they are both around 1:5 to 1.
When I connect to HF, 6 Meters all the way down SWR is good. Faulty SWR meter on 817 or do I have an issue with the rig? The PO meter changes levels when I switch power levels, and ALC seems to adjust fine. I am puzzled. Any ideas?
Steve
VA3FLF
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Re: Recommendations for a replacement battery pack for F-817ND
Appreciate the response/
73
Gene K1NR
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Martin - PA2RUS
Mike G8NSZ
Randy.AB9GO