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Re: Indoor apartment antenna rfi
Tom Newbery
Heartily concur wiith those who flee the noise and head for the "quiet" outdoors.I have solar panels with micro-inverters on my roof so I head for the mountains to the access road to Snowbasin Ski Resort, or the parking lot at the beginning of the causeway leading to the Great Salt Lake's Antelop Island. Tom, KA7MWQ Signature: F16/SPAMCAN
On Saturday, June 22, 2019, 10:33:45 PM MDT, Mike-2020@... [FT817] wrote:
?
Concur!? Apartment operation sucks.? The ultimate solution is to move.
Some relief might be had.? Run your radio on battery power and pull your main breaker.? If your noise level is significantly reduced, there may be some relief found in cleaning up your own noise generators.? If the noise remains high, your neighbors are your main noise source.? You might ask them to work with you to reduce noise.? But that can become a problem too.
Although my home location is very quiet, I enjoy portable operations myself.? Just yesterday I was up on the highest summit in Northern Bavaria, making contacts on 40m-30m-20m.? Some of the signals were S-0, but the contact was completed.
Good luck.
Vy73 -- Mike -- DL/KD5KC
Rhon Mountains
Strahlungen Germany
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Re: ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
All good Mike, just couldn't resist the opportunity - you don't normally leave yourself open like that!
toggle quoted message
Show quoted text
Sounds like it was a great trip that you had - I have only activated in the UK, so returning to EU to get some more hills and associations under the belt is well up on my list of things to do. And of course the trusty FT-817 would be the rig of choice - what else is there that gives you all modes 160m to 70cm in the one radio in such a portable format (be it with a 3S LiFePO4 or even dare I say it a 3S LiPo)! Matt VK1MA -----Original Message-----
From: FT817@... <FT817@...> Sent: Sunday, 30 June 2019 11:39 PM To: FT817@... Subject: RE: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery Good evening Matt. Yeah - I see that I cannot spell either! <grin>. MINDS! GREAT MINDS! In my defense, I am suffering JET LAG from nearly a month in Germany, then two days home, and immediately on to my 4 x 12-hour-night shift rotation. I don't know where I am right now! I activated 5 SOTA summits while in Europe. Quite an accomplishment, considering the primary mission is to get my wife over to visit her mother as much as possible. My sister-in-law is Dl1NLG, my brother-in-law is DG7NFV. Although they have always supported my SOTA fun, neither is really interested. Between my 2017 visit and my 2019 visit, my nephew Andreas became DO5AL. Every visit, I attend a joint SOTA activation, followed by a party on the next summit over. This was my first activation of the visit. And the party was awesome too! My nephew had heard of SOTA, but had never tried it. He had a KX3 and a wire antenna. One activation, and he was hooked. Also interesting to note, he quickly became envious of the 2m-SSB and 70cm-SSB capabilities of the FT-817. So within the first week he sold the KX3 and bought a clean almost new FT-817ND. When he discovered that I leave a set of Arrow Beams for 2m and 70cm in his basement (weight I don't have to carry back and forth), he quickly begged permission to use them. Of course. I mentioned that I had previously activated in OE and OK, and I'd like to get more countries in my log, he came up with a fast run to HB0 and HB9. We travelled 1,000 km and activated two summits in two countries in just 18 hours. Departed at 0500, returned at 2300. He has fallen in love with the FT-817ND. As we know, there isn't another radio quite like it. A few days after activating HB0 and HB9, we activated 2 local 10-point summits. And he asked me to send him some antenna supplies. I've gathered up about half of what he asked for already. Yes - as we both know, the 3S Li-Fe-Po4 is almost a perfect match to the needs of the FT-817. It is a very good choice for nearly any mobile portable radio in the 4S configuration as well. But a 4S Li-Po? Not so much. I really Really REALLY wish the 3S 3600 mAh Li-Po internal pack I have was not discontinued. I only have two left, and one is showing signs of going weak on me. It may eventually force me to switch to external batteries. Have a GREAT (minds) evening sir. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: |
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File - FT817 Group Guidelines.txt
The FT817 Group averages over 500 (+/-130 one-sigma) messages
per month. Because the volume of messages is rather large, I would like to remind everyone of a few long-standing FT817 guidelines to follow. Most of you do so already. 1. Civility. (This is practiced well by our members!) 2. Please sign your messages with name and call sign, e.g., Fred - W1XYZ. 3. When replying to a posting (message), kindly delete all unnecessary text including the trailing text. Only leave the text from the prior message to which you are replying ... <snip> the rest. If one desires to read the entire thread, the command [Up Thread] at the top of the message can be used to read the entire discussion. Remember also that a lot of members have slow connections and some even pay connect time or characters rx/tx. This also helps the clarity of your message. 4. When replying to a post, please decide if your comment should be to the entire group of about 10,000 or directly to the author of the post. When you click on "Reply," it goes to everyone. To reply direct (simplex), you should click on the email address following the user ID line at the top of the post. Notice that only a part is shown for privacy. Also, please think about if what you are about to post in reply to the group really should be to the group ... replies like "I sure do agree with that" doesn't add much to the group. Send thoughts like those direct to the poster please. 5. It is fine for members to post something for sale or wanted to buy ... once per item(s). All questions and offers to buy/sell should be made directly to the poster, not to the Group. The member posting the FS or WTB may post that the item(s) was/were sold/purchased. 6. Posting of commercial items for sale by manufacturers or dealers is also fine, but should be done on an infrequent basis. The FT817 members benefit by learning of hardware, software, sales, etc. before it appears in magazines, etc. 7. New members are all moderated until their first posting. If it follows the guidelines, it is approved and the member is change to unmoderated status. This list is a partially moderated list, i.e., only first message is moderated while later messages are monitored after posting. If an unmoderated posting is found by the moderators to have a problem, then the poster is contacted directly to resolve. Actions are taken against those that chronically violate the rules. The reason for this form of moderation is to block spammers from the list and it has been working. 8. Do not add disclaimers to your posts that (1) restrict the ability of other members to use the information you post, (2) claim a copyright to your post, or (3) to claim any type of "rights" as a consequence of another member replying to your post either directly to you or to the group. Thanks to all es 73, Barry - W4WB Moderator |
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Re: MODERATOR MESSAGE: *** HACKED*** Australian Parliament Post
Good to know. Thanks. Joseph V. |
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Re: MODERATOR MESSAGE: *** HACKED*** Australian Parliament Post
Mike Olbrisch
Hi Barry,
I figured that as well. There are two kinds of people in that situation. Those who have been hacked, and those who have not yet been hacked. I figured he was the former, and just deleted the message. Been there, done that too. Wasn¡¯t worth calling him out on it, he was likely embarrassed enough. Hope you¡¯re doing well sir. How is that nearly 20 y/o original FT-817 doing for you? I imagine Yaesu has surpassed the ?-million mark in sales by now. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: <> From: FT817@... <FT817@...> Sent: Sunday, June 30, 2019 7:16 AM To: FT817@... Subject: [FT817] MODERATOR MESSAGE: *** HACKED*** Australian Parliament Post Norm VK5GI notified me that he has been hacked and the Australian Parliament post was a fraud. Do not respond to that post. I am deleting all replying as well. Tnx es 73 de Barry W4WB Moderator [Non-text portions of this message have been removed] |
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Re: ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
Mike Olbrisch
Good evening Matt. Yeah - I see that I cannot spell either! <grin>. MINDS! GREAT MINDS!
toggle quoted message
Show quoted text
In my defense, I am suffering JET LAG from nearly a month in Germany, then two days home, and immediately on to my 4 x 12-hour-night shift rotation. I don't know where I am right now! I activated 5 SOTA summits while in Europe. Quite an accomplishment, considering the primary mission is to get my wife over to visit her mother as much as possible. My sister-in-law is Dl1NLG, my brother-in-law is DG7NFV. Although they have always supported my SOTA fun, neither is really interested. Between my 2017 visit and my 2019 visit, my nephew Andreas became DO5AL. Every visit, I attend a joint SOTA activation, followed by a party on the next summit over. This was my first activation of the visit. And the party was awesome too! My nephew had heard of SOTA, but had never tried it. He had a KX3 and a wire antenna. One activation, and he was hooked. Also interesting to note, he quickly became envious of the 2m-SSB and 70cm-SSB capabilities of the FT-817. So within the first week he sold the KX3 and bought a clean almost new FT-817ND. When he discovered that I leave a set of Arrow Beams for 2m and 70cm in his basement (weight I don't have to carry back and forth), he quickly begged permission to use them. Of course. I mentioned that I had previously activated in OE and OK, and I'd like to get more countries in my log, he came up with a fast run to HB0 and HB9. We travelled 1,000 km and activated two summits in two countries in just 18 hours. Departed at 0500, returned at 2300. He has fallen in love with the FT-817ND. As we know, there isn't another radio quite like it. A few days after activating HB0 and HB9, we activated 2 local 10-point summits. And he asked me to send him some antenna supplies. I've gathered up about half of what he asked for already. Yes - as we both know, the 3S Li-Fe-Po4 is almost a perfect match to the needs of the FT-817. It is a very good choice for nearly any mobile portable radio in the 4S configuration as well. But a 4S Li-Po? Not so much. I really Really REALLY wish the 3S 3600 mAh Li-Po internal pack I have was not discontinued. I only have two left, and one is showing signs of going weak on me. It may eventually force me to switch to external batteries. Have a GREAT (minds) evening sir. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: -----Original Message-----
From: FT817@... <FT817@...> Sent: Sunday, June 30, 2019 7:02 AM To: FT817@... Subject: RE: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery Mines? What sort, gold perhaps? ? Re-reading his response, I think Joseph understands battery chemistry, just missed the reference to LiFePO4 from the OP perhaps. Matt VK1MA -----Original Message----- From: FT817@... <FT817@...> Sent: Sunday, 30 June 2019 10:33 PM To: FT817@... Subject: RE: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery I should have not replied immediately - Matt covered it as well as I could! Hey Matt - great mines or what????? Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: -----Original Message----- From: FT817@... <FT817@...> Sent: Saturday, June 29, 2019 21:07 PM To: FT817@... Subject: RE: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery Hi Joseph, agree that a 4S LiPo is not suitable for the FT-817 (or any other 12V nominal radio without a buck converter or similar), however he is looking at a LiFePO4 not a LiPo ¨C the voltage range of the 4S LiFePO4 is fine for the FT-817, although the better option is the 3S LiFePO4 which has a more suitable voltage range for the FT-817 than the 4S LiFePO4 batteries. Tom, I bought three of the 8400mAh 4s2P LiFePO4 ¡°zippy¡± batteries about 7 years ago. Still going fine, but I use them for radios that need to be around 13.8V (which the 817 does not ¨C it works fine down to 8V or a little lower). I last saw them on the hobbyking site about 12 months ago when I was shopping for some of the 4S 4200 mAh LiFePO4) ¨C they were hard to find, but I did find them in the end. Just looked now and couldn¡¯t find them on hobbyking, so possible that they no longer sell them ¨C perhaps an email to ask if they still sell them? As above, would recommend the 3S LiFePO4 batteries over the 4S ¨C noticed that the US warehouse is currently out of stock for the 4200mAh 3S1P LiFePO4 batteries, but if they are like the VK warehouse, they will restock in a week or two. Alternatively I like the 3S LiPo 2500mAh batteries for the FT-817 ¨C suitable voltage range, cheap, very lightweight and lasts for multiple activations. Matt VK1MA From: FT817@... <FT817@...> Sent: Sunday, 30 June 2019 12:42 PM To: FT817@... Subject: Re: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery I would not recommend running the 817 on any 4s lipo.. Although I have done it, they charge out to over 16 volts DC. Just out of curiosity, why the zippy flightmax? You can run any 3s lipo or lifepo safely. Hobbyking have the Turnigy series batteries in which I have used for many years. The current rating on them are conservative. I currently am using 4x Turnigy 20-30c 5000mAh 3s LiPo batteries for my portable pack. This 4 pack will run my Ft-991a at 100 watts for a good while in a pinch and they never get hot. Joseph V. KD4RXP Iowa On Sat, Jun 29, 2019, 20:18 tdgsr@... <mailto:tdgsr@...> [FT817] <FT817@... <mailto:FT817@...> > wrote: Good Morning Group: I've been searching for the battery above, without much success. From what I can gather, the particular Zippy is a one-off. Every dealer that I've visited was out of stock, including what I believe is the master distributor "Hobby King" If anyone knows where one is lurking, or can suggest something comparable, I would appreciate a heads-up. tnx es 73 de K3SSB Tom G, Sr. ------------------------------------ Posted by: "Matt" <doormatt@...> ------------------------------------ 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 ------------------------------------ Posted by: "Mike Olbrisch" <Mike-2020@...> ------------------------------------ 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 ------------------------------------ Posted by: "Matt" <doormatt@...> ------------------------------------ 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: ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
Mines? What sort, gold perhaps? ?
toggle quoted message
Show quoted text
Re-reading his response, I think Joseph understands battery chemistry, just missed the reference to LiFePO4 from the OP perhaps. Matt VK1MA -----Original Message-----
From: FT817@... <FT817@...> Sent: Sunday, 30 June 2019 10:33 PM To: FT817@... Subject: RE: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery I should have not replied immediately - Matt covered it as well as I could! Hey Matt - great mines or what????? Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: -----Original Message----- From: FT817@... <FT817@...> Sent: Saturday, June 29, 2019 21:07 PM To: FT817@... Subject: RE: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery Hi Joseph, agree that a 4S LiPo is not suitable for the FT-817 (or any other 12V nominal radio without a buck converter or similar), however he is looking at a LiFePO4 not a LiPo ¨C the voltage range of the 4S LiFePO4 is fine for the FT-817, although the better option is the 3S LiFePO4 which has a more suitable voltage range for the FT-817 than the 4S LiFePO4 batteries. Tom, I bought three of the 8400mAh 4s2P LiFePO4 ¡°zippy¡± batteries about 7 years ago. Still going fine, but I use them for radios that need to be around 13.8V (which the 817 does not ¨C it works fine down to 8V or a little lower). I last saw them on the hobbyking site about 12 months ago when I was shopping for some of the 4S 4200 mAh LiFePO4) ¨C they were hard to find, but I did find them in the end. Just looked now and couldn¡¯t find them on hobbyking, so possible that they no longer sell them ¨C perhaps an email to ask if they still sell them? As above, would recommend the 3S LiFePO4 batteries over the 4S ¨C noticed that the US warehouse is currently out of stock for the 4200mAh 3S1P LiFePO4 batteries, but if they are like the VK warehouse, they will restock in a week or two. Alternatively I like the 3S LiPo 2500mAh batteries for the FT-817 ¨C suitable voltage range, cheap, very lightweight and lasts for multiple activations. Matt VK1MA From: FT817@... <FT817@...> Sent: Sunday, 30 June 2019 12:42 PM To: FT817@... Subject: Re: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery I would not recommend running the 817 on any 4s lipo.. Although I have done it, they charge out to over 16 volts DC. Just out of curiosity, why the zippy flightmax? You can run any 3s lipo or lifepo safely. Hobbyking have the Turnigy series batteries in which I have used for many years. The current rating on them are conservative. I currently am using 4x Turnigy 20-30c 5000mAh 3s LiPo batteries for my portable pack. This 4 pack will run my Ft-991a at 100 watts for a good while in a pinch and they never get hot. Joseph V. KD4RXP Iowa On Sat, Jun 29, 2019, 20:18 tdgsr@... <mailto:tdgsr@...> [FT817] <FT817@... <mailto:FT817@...> > wrote: Good Morning Group: I've been searching for the battery above, without much success. From what I can gather, the particular Zippy is a one-off. Every dealer that I've visited was out of stock, including what I believe is the master distributor "Hobby King" If anyone knows where one is lurking, or can suggest something comparable, I would appreciate a heads-up. tnx es 73 de K3SSB Tom G, Sr. [Non-text portions of this message have been removed] ------------------------------------ Posted by: "Matt" <doormatt@...> ------------------------------------ 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 ------------------------------------ Posted by: "Mike Olbrisch" <Mike-2020@...> ------------------------------------ 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: ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
Mike Olbrisch
I should have not replied immediately - Matt covered it as well as I could!
toggle quoted message
Show quoted text
Hey Matt - great mines or what????? Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: -----Original Message-----
From: FT817@... <FT817@...> Sent: Saturday, June 29, 2019 21:07 PM To: FT817@... Subject: RE: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery Hi Joseph, agree that a 4S LiPo is not suitable for the FT-817 (or any other 12V nominal radio without a buck converter or similar), however he is looking at a LiFePO4 not a LiPo ¨C the voltage range of the 4S LiFePO4 is fine for the FT-817, although the better option is the 3S LiFePO4 which has a more suitable voltage range for the FT-817 than the 4S LiFePO4 batteries. Tom, I bought three of the 8400mAh 4s2P LiFePO4 ¡°zippy¡± batteries about 7 years ago. Still going fine, but I use them for radios that need to be around 13.8V (which the 817 does not ¨C it works fine down to 8V or a little lower). I last saw them on the hobbyking site about 12 months ago when I was shopping for some of the 4S 4200 mAh LiFePO4) ¨C they were hard to find, but I did find them in the end. Just looked now and couldn¡¯t find them on hobbyking, so possible that they no longer sell them ¨C perhaps an email to ask if they still sell them? As above, would recommend the 3S LiFePO4 batteries over the 4S ¨C noticed that the US warehouse is currently out of stock for the 4200mAh 3S1P LiFePO4 batteries, but if they are like the VK warehouse, they will restock in a week or two. Alternatively I like the 3S LiPo 2500mAh batteries for the FT-817 ¨C suitable voltage range, cheap, very lightweight and lasts for multiple activations. Matt VK1MA From: FT817@... <FT817@...> Sent: Sunday, 30 June 2019 12:42 PM To: FT817@... Subject: Re: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery I would not recommend running the 817 on any 4s lipo.. Although I have done it, they charge out to over 16 volts DC. Just out of curiosity, why the zippy flightmax? You can run any 3s lipo or lifepo safely. Hobbyking have the Turnigy series batteries in which I have used for many years. The current rating on them are conservative. I currently am using 4x Turnigy 20-30c 5000mAh 3s LiPo batteries for my portable pack. This 4 pack will run my Ft-991a at 100 watts for a good while in a pinch and they never get hot. Joseph V. KD4RXP Iowa On Sat, Jun 29, 2019, 20:18 tdgsr@... <mailto:tdgsr@...> [FT817] <FT817@... <mailto:FT817@...> > wrote: Good Morning Group: I've been searching for the battery above, without much success. From what I can gather, the particular Zippy is a one-off. Every dealer that I've visited was out of stock, including what I believe is the master distributor "Hobby King" If anyone knows where one is lurking, or can suggest something comparable, I would appreciate a heads-up. tnx es 73 de K3SSB Tom G, Sr. [Non-text portions of this message have been removed] ------------------------------------ Posted by: "Matt" <doormatt@...> ------------------------------------ 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: ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
Mike Olbrisch
For the record, Li-Fe-Po4 ¨C IS NOT ¨C Li-Po. Different critter completely, and a 4S Li-Fe-Po4 is safe to use with the FT-817ND, or other mobile radios that can accept 15V or less input voltages. A 4S Li-Po is not safe unless the radio can survive an input voltage nearly 17V.
Of note, a 4S Li-Fe-Po4 can be damaged by the FT-817. My FT-817ND shuts down at a measured 7.2V. The above URL will show that a 4S Li-Fe-Po4 is dead at 10V and can be damaged by excursions below that. A 3S Li-Fe-Po4 will be about 11V fresh off the charger, and considered dead at 7.5V. Several years ago I contacted an engineer from A123 and asked about how critical short excursions to 7.2V were, and as it is a momentary dip when the transmitter cuts out and by the time you reset the radio it is already above the 7.5V lower limit, damage is minimal. The 3S Li-Fe-Po4 is perhaps the perfect battery for the FT-817. Energy density is the one point in favor if the Li-Po. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: <> From: FT817@... <FT817@...> Sent: Saturday, June 29, 2019 20:42 PM To: FT817@... Subject: Re: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery I would not recommend running the 817 on any 4s lipo.. Although I have done it, they charge out to over 16 volts DC. Just out of curiosity, why the zippy flightmax? You can run any 3s lipo or lifepo safely. Hobbyking have the Turnigy series batteries in which I have used for many years. The current rating on them are conservative. I currently am using 4x Turnigy 20-30c 5000mAh 3s LiPo batteries for my portable pack. This 4 pack will run my Ft-991a at 100 watts for a good while in a pinch and they never get hot. Joseph V. KD4RXP Iowa On Sat, Jun 29, 2019, 20:18 tdgsr@... <mailto:tdgsr@...> [FT817] <FT817@... <mailto:FT817@...> > wrote: Good Morning Group: I've been searching for the battery above, without much success. From what I can gather, the particular Zippy is a one-off. Every dealer that I've visited was out of stock, including what I believe is the master distributor "Hobby King" If anyone knows where one is lurking, or can suggest something comparable, I would appreciate a heads-up. tnx es 73 de K3SSB Tom G, Sr. [Non-text portions of this message have been removed] |
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Re: ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
Hi Joseph, agree that a 4S LiPo is not suitable for the FT-817 (or any other 12V nominal radio without a buck converter or similar), however he is looking at a LiFePO4 not a LiPo ¨C the voltage range of the 4S LiFePO4 is fine for the FT-817, although the better option is the 3S LiFePO4 which has a more suitable voltage range for the FT-817 than the 4S LiFePO4 batteries.
Tom, I bought three of the 8400mAh 4s2P LiFePO4 ¡°zippy¡± batteries about 7 years ago. Still going fine, but I use them for radios that need to be around 13.8V (which the 817 does not ¨C it works fine down to 8V or a little lower). I last saw them on the hobbyking site about 12 months ago when I was shopping for some of the 4S 4200 mAh LiFePO4) ¨C they were hard to find, but I did find them in the end. Just looked now and couldn¡¯t find them on hobbyking, so possible that they no longer sell them ¨C perhaps an email to ask if they still sell them? As above, would recommend the 3S LiFePO4 batteries over the 4S ¨C noticed that the US warehouse is currently out of stock for the 4200mAh 3S1P LiFePO4 batteries, but if they are like the VK warehouse, they will restock in a week or two. Alternatively I like the 3S LiPo 2500mAh batteries for the FT-817 ¨C suitable voltage range, cheap, very lightweight and lasts for multiple activations. Matt VK1MA From: FT817@... <FT817@...> Sent: Sunday, 30 June 2019 12:42 PM To: FT817@... Subject: Re: [FT817] ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery I would not recommend running the 817 on any 4s lipo.. Although I have done it, they charge out to over 16 volts DC. Just out of curiosity, why the zippy flightmax? You can run any 3s lipo or lifepo safely. Hobbyking have the Turnigy series batteries in which I have used for many years. The current rating on them are conservative. I currently am using 4x Turnigy 20-30c 5000mAh 3s LiPo batteries for my portable pack. This 4 pack will run my Ft-991a at 100 watts for a good while in a pinch and they never get hot. Joseph V. KD4RXP Iowa On Sat, Jun 29, 2019, 20:18 tdgsr@... <mailto:tdgsr@...> [FT817] <FT817@... <mailto:FT817@...> > wrote: Good Morning Group: I've been searching for the battery above, without much success. From what I can gather, the particular Zippy is a one-off. Every dealer that I've visited was out of stock, including what I believe is the master distributor "Hobby King" If anyone knows where one is lurking, or can suggest something comparable, I would appreciate a heads-up. tnx es 73 de K3SSB Tom G, Sr. [Non-text portions of this message have been removed] |
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Re: ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
I would not recommend running the 817 on any 4s lipo. Although I have done it, they charge out to over 16 volts DC. Just out of curiosity, why the zippy flightmax? You can run any 3s lipo or lifepo safely. Hobbyking have the Turnigy series batteries in which I have used for many years. The current rating on them are conservative. I currently am using 4x Turnigy 20-30c 5000mAh 3s LiPo batteries for my portable pack. This 4 pack will run my Ft-991a at 100 watts for a good while in a pinch and they never get hot. Joseph V.? KD4RXP? Iowa
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ZIPPY Flightmax 8400mAh 4S2P 30C LiFePo4 battery
Good Morning Group: I've been searching for the battery above, without much success.? From what I can gather, the particular Zippy is a one-off.? Every dealer that I've visited was out of stock, including what I believe is the master distributor "Hobby King"? If anyone knows where one is lurking, or can suggest something comparable, I would appreciate a heads-up. tnx es 73 de K3SSB Tom G, Sr. ? |
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8400mah 13.2 v LiFePO4 battery
Good Morning Group: I've been searching for the Zippy 8400mah 13.2v?LiFePO4 battery, without much luck. It would appear that all outlets are out-of-stock, including what I suspect is the master distributor Hobby King. Hopefully, someone here can point me to a source with the inventory.? It looks like Zippy was the sole source for this particular combination of mah and voltage. Have FT-817ND, will travel... tnx es 73 de K3SSB Tom G, Sr. |
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Re: Windcamp battery
Hi Ted,
I just checked, and yes you can power the 817 and charge the battery at the same time. Just be careful the voltage you input to charge the battery does not exceed the upper voltage limit of the 817. With the switch in the off position only the battery sees the charge voltage. 73 - KV4TT - Mike |
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Windcamp battery
Theodore Hodges
Hello all! Finally got around to ordering a Windcamp battery/ cover/charger for my 817ND. Just wondering, is it possible to charge the battery from the jack on the cover while using the battery to run the rig at the same time? More specifically, considering plugging the output of a solar panel into the battery cover while operating the rig. Thanks! 73, Ted KE4NBB |
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Re: Indoor apartment antenna rfi
control-plus on most systems...
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Timothy-Allen Albertson kd0oia@... [FT817] wrote:
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Re: Indoor apartment antenna rfi
Timothy-Allen Albertson
TNX very much Al.? ? Very insightful and useful. Now if I can figure out how to increase the size of the type my old eyes wont hurt as much. 72/73 DR TIMOTHY-ALLEN ALBERTSON KD?OIA/(ex KG6IRH)
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Re: Yaesu FT817
Friend I saw and I thought great I want to buy but the value I do not know if it's money Russian that value 3 995,86 §â§å§Ò ??? It should be in dollars it gets easier. Thank you friend for this tip. 3 995.86 §â§å§Ò ??? ? Oliveira PY2-255SWL Call Sign PU2OLT RX Morphy Richards 27024 RX/TX YAESU FT817D RX/TX YAESU FT897D Blog: |
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