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Re: battery pack
Mike Olbrisch
Yeah - I am pretty good at figuring solar/battery. I have 2 kW of solar for
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the emergency power here. And at work I control 110 MW (not a typo, 110 MEGA-watts) of solar. Just as a note, my personal FT-817 runs about 800 mAh in average use. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: -----Original Message-----
From: FT817@... <FT817@...> Sent: Tuesday, April 16, 2019 10:02 AM To: FT817@... Subject: Re: [FT817] battery pack I like the Bioenno batteries, I think their prices are on the high-end of reasonable, but my 20 amp battery works great. To size the battery, you need to know how you are going to use the radio and how long you want to use it. For example, let's say the radio uses 3 amps transmitting, 1 amp receiving. A use case of 50% transmitting, 50% receiving would put you at 2 amp/hr usage.* Now that you know consumption, you need to multiply that average times the number of hours you want to operate between charges. Let's say 7-8 hours - that's a lot of operating between charges. So that points to a 15 amp battery to give you 7-8 hours usage between charges. You could step down to a 12 amp battery if you add a modest solar charger to the mix as Joseph described. I hope that helps, Ken, N2VIP * my power consumption numbers are NOT FT-817/818 numbers, they are made up for simple math. On Apr 16, 2019, at 12:50 AM, Joseph Wonoski N1KHB@... [FT817]<FT817@...> wrote: panel and a 12v 12A SLAB to power my FT-817, for Field Day like ops. ------------------------------------ Posted by: Ken Hansen <ken@...> ------------------------------------ And for a great FAQ ( Frequently Asked Questions ) see Some really good technical info at: . Please note that your messages and files sent to this group may appear anywhere on the Internet or in print without notice or compensation. ------------------------------------ Yahoo Groups Links |
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Re: Power pole adapter
开云体育Great idea with MFJ1317.?Never had any problems with Windcamps either. I made a 3" pigtail PP to PP to plug into the PP adapter in DC-in. Maybe redundant but eliminates any strain altogether. Portable Zero sells a nice protective case that comes with external charger for the Bioenno 12AH battery. Rich W1GBB -------- Original message -------- From: "'Mike Olbrisch' Mike-2020@... [FT817]" <FT817@...> Date: 4/16/19 09:35 (GMT-05:00) To: FT817@... Subject: RE: [FT817] Power pole adapter AFAIK, there is no available store-bought adapter cable. If you’re determined to go in this direction, you’ll have to make an adapter cable yourself. Parts are available from several sources, any of the big outfits like Newark or Mouser will have what you need. You’ll need a 1.7mm x 4mm female jack, in-line preferred over panel-mount, some sort of wire, and a 2-pole Power Pole set. |
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Re: battery pack
I like the Bioenno batteries, I think their prices are on the high-end of reasonable, but my 20 amp battery works great.
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To size the battery, you need to know how you are going to use the radio and how long you want to use it. For example, let's say the radio uses 3 amps transmitting, 1 amp receiving. A use case of 50% transmitting, 50% receiving would put you at 2 amp/hr usage.* Now that you know consumption, you need to multiply that average times the number of hours you want to operate between charges. Let's say 7-8 hours - that's a lot of operating between charges. So that points to a 15 amp battery to give you 7-8 hours usage between charges. You could step down to a 12 amp battery if you add a modest solar charger to the mix as Joseph described. I hope that helps, Ken, N2VIP * my power consumption numbers are NOT FT-817/818 numbers, they are made up for simple math. On Apr 16, 2019, at 12:50 AM, Joseph Wonoski N1KHB@... [FT817] <FT817@...> wrote: |
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Re: battery pack
Jonathan Poland
开云体育You can always use the wire-cutter on your needle nose pliers as a crimper.? I have done it quite successfully.? Just be gentle... Answering the original question: I use an external Bioenno brand battery that I keep charged AND disconnected from the radio.? The FT-817 and especially the FT-818 have internal leakage that will drain any connected battery.? This means that if you keep your battery connected, it won't be charged when you need it.? And it could possibly be permanently damaged.? I prefer not to use the internal battery compartment as disconnecting the internal battery is hard and I forget to do it after charging. jon N0WL On 4/16/2019 00:50, Joseph Wonoski
N1KHB@... [FT817] wrote:
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Re: Power pole adapter
Jonathan Poland
开云体育Believe it or not Randy, with over 3,500 adapters sold over the
past 2 years, you are the very first person to ask for this.? But
I will investigate it and hopefully do a short run.? But it won't be cheap!? Expect to pay at least $20 with postage, because it will require skilled fabrication and testing that is labor intensive.? Are you willing to pay that much? jon N0WL On 4/15/2019 23:40, Randy Davenport
pastor.spaceboy@... [FT817] wrote:
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Re: Power pole adapter
Mike Olbrisch
AFAIK, there is no available store-bought adapter cable. If you’re determined to go in this direction, you’ll have to make an adapter cable yourself. Parts are available from several sources, any of the big outfits like Newark or Mouser will have what you need. You’ll need a 1.7mm x 4mm female jack, in-line preferred over panel-mount, some sort of wire, and a 2-pole Power Pole set.
To the guys building and selling the Power Pole jack adapter, here’s another nitch market to consider. Not sure it would be popular enough to sell, but here’s one sale….. ADAPTER CABLE. If this isn’t a solution for you, you can look for a similar wall wart power supply. Anything at 12 to 15 V with 500 mA (1/2-amp) output will do. I probably have 3 like that in my junk box. Chop off the end and install a Power Pole. Was it me, I wouldn’t bother with the stock charger. I’d pick up an MFJ-1317 power supply. It is 13.8 VDC @ 2.89 A, and pretty much noise free. It has enough power to use the radio in both RX and TX, and still charge the battery. The stock charger cannot even run the radio in RX and charge it at the same time. Size – it is a little more than 2X the original charger. I have two of these MFJ-1317s, one for each of my FT-817s. Both have Anderson Power Poles on them, and I take them whenever I travel (except backpacking). You can spend twice as much on other supplies, but this one is good enough and that’s all that matters. The last possibility is to remove the Power Pole adapter for charging. That is something I would not do. But with care, you could probably get away with it and not cause any troubles with the jack failure. Good luck, whatever you decide. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: <> From: FT817@... <FT817@...> Sent: Monday, April 15, 2019 22:41 PM To: ft817@... Subject: [FT817] Power pole adapter I have the pp for a ft817 power jack. I do not want to cut any cables. I am looking for an adapter pigtail so I can continue to use the charger. Can someone help me out? Randy ka4nma [Non-text portions of this message have been removed] |
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Re: Power pole adapter
开云体育Hi All,
The connector size is a 1.7 x 4 mm DC plug. I normally save them from universal DC power packs that come with a range of plugin DC right-angle adaptors. I then solder the power lead to the pins and apply heat shrink tubing over the soldered pins and then over the whole join area. When plugged in I clamp the DC lead under a saddle screwed down by the earth screw. Ebay items.... Cheers, Arno. On 16/04/2019 19:34, John john@... [FT817] wrote:
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Re: Power pole adapter
开云体育Hi RandyThat is one of the problems (there are others in my opinion) with the Powerpole adaptor. The suggestion by Richard at Sotabeams when I saw him at the Newark Hamfest last September was to cut the plug off the charger and fit Powerpoles "because that's what everyone does" was unacceptable to me. Sockets to make an adaptor are available from an Amazon seller but quite difficult to find because of their unusual size. I couldn't find any on eBay at the time. 73, John On 16/04/2019 05:40, Randy Davenport
pastor.spaceboy@... [FT817] wrote:
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Re: battery pack
Harbor Freight has a general purpose crimper < $10 that works just dandy on pp connectors. Im all for good tools, but i also dislike expensive tools that only do one thing. Just sayin. Sonny n1khb On Monday, April 15, 2019 'Mike Olbrisch' Mike-2020 <FT817@...> wrote:
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Well, there are several ways to skin a cat. I prefer a basketball needle and compressed air……. Just sayin….. |
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Re: battery pack
Mike Olbrisch
OH…… forgot.
I wire other batteries internally by taking the AA-cell pack and unsoldering the plug and wires, and attaching them to the new battery pack. I bought several AA-packs and cut the wires and plugs off. DO NOT use the AA-cell pack. It isn’t up to the task. And if you Stuffit with Mi-MH cells, you might get a very unwanted surprise. If the new battery pack is Li-Po or Li-Fe-Po4, connect the green wire to the + side of the first cell (about 4v). This will inhibit your charger, so you cannot accidently charge the Li-Po inside the radio. That would not be good either. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: <> From: FT817@... <FT817@...> Sent: Monday, April 15, 2019 12:33 PM To: FT817@... Subject: [FT817] battery pack hi guys, this is my first post and i know this is going to be a basic question for you guys but until you tell me the answer i dont know, i got the 817 to go out and about with not much weight but the battery life is not great as explained clearly on this site so i want to carry some more power for 8 hours now reading the posts here it seems that lipo power is the answer, now this is my silly question do you cut the output wire plug off ant solder on a jack plug and the put that in the 13v supply? or what, thanks in advance, steve m6ndq [Non-text portions of this message have been removed] |
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Re: battery pack
Mike Olbrisch
Well, there are several ways to skin a cat. I prefer a basketball needle and compressed air……. Just sayin…..
Internal battery: If you are not satisfied with the internal battery (and WHO is?), presently the best capacity internal battery is the Windcamp. They are a bit pricy, but it comes with a battery, and a charger built into the new supplied battery door. Everything else is second-rate. They are 3,000 mAh. If you are willing to go to an external source, the sky is the limit. RECOMMENDATION: Convert to Anderson Power Poles immediately, and use them. The stock power jack has two modes of failure, and if you use it often you are bound to discover one of them. If you need a power pole kit to get you started, I highly recommend Power Werx. But then, I will always lean toward QUALITY over PRICE every time. They sell parts, kits, and wire. They’ve become my go-to place, and even my brother-in-law in Germany (Helmut-DG7NFV) uses them for his P-P work. Done right, they are impossible to cross-polarize, even in the dark. Batteries: There are as many types as you can imagine. The FT-817 likes power at 12v or below. Anything approaching 16v is too much, and will only cause a lot of un-necessary heat in the internal regulators. A 3S Li-Lo is a wonderful choice. A 4S is too much. If Li-Po scares you, then go to Li-Fe-Po4 (Lithium Nano-Phosphate). It does not have the energy density of Li-Po, but it is safer. Also costs more. But a 3S Li-Fe-Po4 is a perfect match to the needs of the FT-817. The best are sold by Buddi-Pole. They are really made for the field, complete with internal overcurrent protection etc. One note: Li-Po and Li-Fe-Po4 need special chargers. They are not too expensive, but don’t try a SLAB charger, you will not like the result. Neither will your insurance company. If weight is not an issue, then go FREE. Check out your local Alarm Service Company. Go in and BEG. They usually have a stack of SLABs (Sealed Lead Acid Battery) laying around that they need to dispose of. They swap them out every 6 months to a year, and mostly they just sat there on a float charge the whole time. Downside is that they are heavy. But a 7 or 10 amp SLAB will get you several hours of operation, and if you’re lucky it really was free for the asking. And the SLAB can use a regular charger. Personally, for operations where I am not backpacking, I have a 25 w solar panel and a 12v 12A SLAB to power my FT-817, for Field Day like ops. Hobby King is a good place to search bot batteries. IF – you want to learn more about batteries, go to Battery University. This should be enough to get your head spinning. Of course, you can search for sources in your own country too. And perhaps you’ll be on the air in June, and can catch me as DL/KD5KC. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: <> From: FT817@... <FT817@...> Sent: Monday, April 15, 2019 12:33 PM To: FT817@... Subject: [FT817] battery pack hi guys, this is my first post and i know this is going to be a basic question for you guys but until you tell me the answer i dont know, i got the 817 to go out and about with not much weight but the battery life is not great as explained clearly on this site so i want to carry some more power for 8 hours now reading the posts here it seems that lipo power is the answer, now this is my silly question do you cut the output wire plug off ant solder on a jack plug and the put that in the 13v supply? or what, thanks in advance, steve m6ndq [Non-text portions of this message have been removed] |
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Re: battery pack
开云体育Hi,My recommendation and what I did.? I have two pre made power cords. One has the plugs for the 827 and my LDG tuner and the other just for the radio. Both terminate to Power pole plugs.? Get a Budipole Power mini, a Bioeno or similar LiFePo battery, a 28w solar panel, then terminate everything with power poles and you are pretty much self sustaining.? There are other solutions, but this one provides a lot of flexibility.? 73, |
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battery pack
hi guys, this is my first post and i know this is going to be a basic question for you guys but until you tell me the answer i dont know, i got the 817 to go out and about with not much weight but the battery life is not great as explained clearly on this site so i want to carry some more power for 8 hours now reading the posts here it seems that lipo power is the answer, now this is my silly question do you cut the output wire plug off ant solder on a jack plug and the put that in the 13v supply? or what, thanks in advance, steve m6ndq? |
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Re: FT991a with Signalink?
Hi Ken
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Yes I have seen that site and I am considering it as a possible upgrade to my Rpi. Marty kd8bj On 4/3/19 8:20 AM, Ken Hansen ken@... [FT817] wrote:
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Doug Lynch NNJ4EM