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Re: FT-818 Odd SWR Readings on 70 cm
There are settings in the service menu (the "hidden" menu) to adjust the reflected power sensitivity for HF, VHF, and UHF.? Perhaps those got misadjusted or corrupted (or perhaps the rig came from the factory misadjusted).? I don't remember which menu setting and I am at work so can't check my notes, but you can Google it. Eric Forman KM4VR "Vinum lux Solis est, ab aqua coercita" - Galileo
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Re: FT-818 Odd SWR Readings on 70 cm
Steve, the problem may be parasitic capacitance if the dummy load has multiple resistors due to the resistor lead end caps, the more resistors the worse the problem - check out QST article on UHF dummy load, it shows 11 x 560 ohm resistors in parallel and a small coil - looks like a very good article.
Regards 73 Paul 2E0YOB Paul Simmonds |
Re: FT-818 Odd SWR Readings on 70 cm
Go for an external meter then.? I'm using my 817 this weekend if I have a 70cm antenna I'll check it but mostly I just use it for HF. Dave G0CER
-- 73 Dave H G0CER |
Re: FT-818 Odd SWR Readings on 70 cm
I used completely different cables for the front and rear antenna connectors, so I think I have taken the bad cable possibility out of the possible reasons list.? I also operated for a while on 70 cm yesterday and consistently got the 3 bars SWR reading on a well-matched antenna (with another completely different piece of coax).? It seemed to be working fine, apart from the odd SWR reading.
73, Steve VE3SMA |
Re: FT-818 Odd SWR Readings on 70 cm
Just a thought Steve? - are you using a patch lead to the dummy load - can you swap for another? I've an 817 and really thinking about it never used 70cm except to listen on. Dave G0CER
-- 73 Dave H G0CER |
FT-818 Odd SWR Readings on 70 cm
My FT-818 shows 3 bars on the SWR meter on 70 cm at the 5 W setting, when connected to a good quality UHF/microwave dummy load.? On 50 or 144 MHz it shows zero bars.? This is true for both front and rear antenna connectors.? The output power is indeed 5 watts, measured on a Coaxial Dynamics meter.? I have tried a couple of good dummy loads. |
Re: Power pole adapter
Mike Olbrisch
That was exactly it. Some parts had become unobtanium. But they should have left the power levels alone. Only a rank beginner thinks that 6 watts is any kind of useful increase in anything but battery drain. But the loss of the 0.5 watt output will hurt anyone using ?-wave transverters. Instead of using 0.5w as a driver, they now have 1w. That doubles every requirement including battery drain and resistor values in the matching input. And it increases the heat lost in the network.
Using the FT-817 was a very popular way to operate from V/UHF rovers because it is quite small, and was perfect for driving transverters. The only thing constant is change. But sometimes change is not a good thing. Mike – KD5KC -- El Paso -- Texas. The canyons are calling, colorful and deep. But I have promises to keep. And miles to go still in my Jeep... And miles to go still in my Jeep... ADVENTURE: The respectful pursuit of trouble. From: FT817@... <FT817@...> Sent: Sunday, April 21, 2019 10:14 AM To: FT817@... Subject: Re: [FT817] Re: Power pole adapter I believe the main reason for bringing the FT-818 out was some parts are no longer available for the FT-817. It is sort of a "If it ain't broke, don't fix it." By upgrading to parts that are available, keeps the cost in line and that seems to be the case with the FT-818. 73, Joe, K8JP/K5-V31JP On 4/21/2019 8:42 AM, 'Mike Olbrisch' Mike-2020@... <mailto:Mike-2020@...> [FT817] wrote: Good morning Ray. Going over my notes, I show 240,000 radios sold a couple of years ago. I imagine they hit 250,000 radios before the 818 came out. Maybe not….. but only Yaesu knows for sure, and they are not telling. I sometimes wonder if the 818 should be carried as 817 sales, or if it should stand under its own numbers. Is it different enough to make a difference? To me, there is a difference, and not for the better. While the 818 is essentially an updated 817, for my wants the made it a bit worse.. The 817 power levels are 5w-2.5w-1w-0.5w. The 818 runs 6w-5w-2.5w-1w. The difference between 5w and 6w is only useful if you are driving an amplifier that needs the 6w input. Actually on the air, all the 6w does is run your battery flat 20% quicker. But for my ops, the 0.5w level is very miserly on battery use, and is great for driving transverters, a very popular use among V/UHF ROVERS. The FT-818 announcement was a roar. The actual implementation was a whimper! And you are correct. There still is not any other radio out there that directly competes with the FT-817. The FT-818 could have been so much more. It could have beat the KX3. Instead, it was a disappointment. But at least it kept the style out there. It would have been even worse if the 817 were discontinued and no replacement made. Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at: <> -- Regards, Joe, K8JP/V31JP, Ronnie, Martin & Sidney Pontek 175 Diamond Loch Rd., Apt. 5 Gilmer, TX 75644-9374 U.S.A. or P.O. Box 280, Dangriga, Stann Creek District (Hopkins Village) Belize 903-204-2318 (My TX cellular) 903-884-5990 (Skype telephone number, Belize & TX) Also, K8JP, member FOC-1743, QCWA-LM21894, OOTC-4607, A1OP, SKCC-3171T, NAQCC-5798, Flying Pig-2819, FISTS-7625CC951, A1C-2299, SOC 1075, 10-10 22977, PG1915841, CW Rag chewers #21, Facebook: Joe Pontek Skype: v31joepalooka I am looking for Vibroplex Model X, Double lever and prefer basket cases to restore. LotW [Non-text portions of this message have been removed] |
Re: Power pole adapter
开云体育I believe the main reason for bringing the FT-818 out was some
parts are no longer available for the FT-817. 73, Joe, K8JP/K5-V31JP On 4/21/2019 8:42 AM, 'Mike Olbrisch'
Mike-2020@... [FT817] wrote:
-- Regards, Joe, K8JP/V31JP, Ronnie, Martin & Sidney Pontek 175 Diamond Loch Rd., Apt. 5 Gilmer, TX 75644-9374 U.S.A. or P.O. Box 280, Dangriga, Stann Creek District (Hopkins Village) Belize 903-204-2318 (My TX cellular) 903-884-5990 (Skype telephone number, Belize & TX) Also, K8JP, member FOC-1743, QCWA-LM21894, OOTC-4607, A1OP, SKCC-3171T, NAQCC-5798, Flying Pig-2819, FISTS-7625CC951, A1C-2299, SOC 1075, 10-10 22977, PG1915841, CW Rag chewers #21, Facebook: Joe Pontek Skype: v31joepalooka I am looking for Vibroplex Model X, Double lever and prefer basket cases to restore. LotW |
Re: Power pole adapter
Mike Olbrisch
开云体育Good morning Ray. ? Going over my notes, I show 240,000 radios sold a couple of years ago.? I imagine they hit 250,000 radios before the 818 came out.? Maybe not….. but only Yaesu knows for sure, and they are not telling. ? I sometimes wonder if the 818 should be carried as 817 sales, or if it should stand under its own numbers.? Is it different enough to make a difference?? To me, there is a difference, and not for the better.? While the 818 is essentially an updated 817, for my wants the made it a bit worse.? The 817 power levels are 5w-2.5w-1w-0.5w.? The 818 runs 6w-5w-2.5w-1w.? The difference between 5w and 6w is only useful if you are driving an amplifier that needs the 6w input.? Actually on the air, all the 6w does is run your battery flat 20% quicker.? But for my ops, the 0.5w level is very miserly on battery use, and is great for driving transverters, a very popular use among V/UHF ROVERS.? The FT-818 announcement was a roar.? The actual implementation was a whimper! ? And you are correct.?? There still is not any other radio out there that directly competes with the FT-817.? The FT-818 could have been so much more.? It could have beat the KX3.? Instead, it was a disappointment.? But at least it kept the style out there.? It would have been even worse if the 817 were discontinued and no replacement made. ? Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at:? ? ? ? ? ? From: FT817@...
Sent: Sunday, April 21, 2019 7:13 AM To: FT817@... Subject: Re: [FT817] Re: Power pole adapter ?
? The FT-817 and it's successors, ARE the best selling rigs of all time. ?Ironic, since Yaesu originally viewed it as a rig only for their domestic market. ?But, hams around the world saw the advantages of a compact rig that was all-mode, and all-band (160 M through 70 cm). ?It's surprising that no other company has sought to make a directly competing product. K2ULR ? -----Original Message----- The radio itself is enormously popular and with so many in use theres bound to be a variety of mods and improvements. I dont know any numbers but it is probably among the highest selling rigs of all time. Sonny n1khb On Saturday, April 20, 2019 captrjbowen captrjbowen <FT817@...> wrote: ? ? I don't know of? any other radio that so many operators devise so many ingenious ways of powering.? ? -------- Original message -------- Date: 4/20/19 17:09 (GMT-05:00) To: FT817@... Subject: RE: [FT817] Re: Power pole adapter ? ? ? ? ? ? I ordered 5 myself, why 5,?I don't know............ ? ? Randall ? From: FT817@... [mailto:FT817@...] ? Thanks !? Just got a couple. Rich W1GBB ? -------- Original message -------- Date: 4/19/19 22:37 (GMT-05:00) To: FT817@... Subject: RE: [FT817] Re: Power pole adapter ? ? ? ? ? eBay, of course... ? ? ? Randall ? From: FT817@... [mailto:FT817@...] ? Where is that pigtail available ? Sent from AOL Mobile Mail ? ?
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Re: Power pole adapter
Hi Sonny:
toggle quoted message
Show quoted text
The FT-817 and it's successors, ARE the best selling rigs of all time. ?Ironic, since Yaesu originally viewed it as a rig only for their domestic market. ?But, hams around the world saw the advantages of a compact rig that was all-mode, and all-band (160 M through 70 cm). ?It's surprising that no other company has sought to make a directly competing product.
73 de Ray K2ULR
-----Original Message-----
From: Joseph Wonoski N1KHB@... [FT817] To: FT817 Cc: captrjbowen Sent: Sat, Apr 20, 2019 11:28 pm Subject: RE: [FT817] Re: Power pole adapter The radio itself is enormously popular and with so many in use theres bound to be a variety of mods and improvements. I dont know any numbers but it is probably among the highest selling rigs of all time.
Sonny n1khb
On Saturday, April 20, 2019 captrjbowen captrjbowen <FT817@...> wrote:
?
I don't know of? any other radio that so many operators devise so many ingenious ways of powering.?
-------- Original message --------
From: "'Randall' N0UTJ@... [FT817]" <FT817@...>
Date: 4/20/19 17:09 (GMT-05:00)
To: FT817@...
Subject: RE: [FT817] Re: Power pole adapter
?
?
?
?
I
ordered 5 myself, why 5,?I don't
know............
?
?
Randall
From: FT817@... [mailto:FT817@...] Sent: Saturday, April 20, 2019 11:04 AM To: FT817@... Cc: captrjbowen@... Subject: RE: [FT817] Re: Power pole adapter Thanks !? Just got a couple.
Rich W1GBB
-------- Original message --------
From: "'Randall' N0UTJ@... [FT817]"
Date: 4/19/19 22:37 (GMT-05:00)
To: FT817@...
Subject: RE: [FT817] Re: Power pole adapter
?
?
?
eBay, of
course...
?
?
?
Randall
From: FT817@... [mailto:FT817@...] Sent: Friday, April 19, 2019 4:56 PM To: FT817@... Subject: RE: [FT817] Re: Power pole adapter Where is that pigtail available ?
Sent
from AOL Mobile Mail
Get the new AOL app: On?Friday, April 19, 2019,?'Randall'
N0UTJ@... [FT817]??wrote:
|
Re: Power pole adapter
The radio itself is enormously popular and with so many in use theres bound to be a variety of mods and improvements. I dont know any numbers but it is probably among the highest selling rigs of all time. Sonny n1khb On Saturday, April 20, 2019 captrjbowen captrjbowen <FT817@...> wrote:
?
I don't know of? any other radio that so many operators devise so many ingenious ways of powering.? -------- Original message -------- From: "'Randall' N0UTJ@... [FT817]" <FT817@...> Date: 4/20/19 17:09 (GMT-05:00) To: FT817@... Subject: RE: [FT817] Re: Power pole adapter ? ?
?
?
I
ordered 5 myself, why 5,?I don't
know............
?
?
Randall From: FT817@... [mailto:FT817@...] Sent: Saturday, April 20, 2019 11:04 AM To: FT817@... Cc: captrjbowen@... Subject: RE: [FT817] Re: Power pole adapter Thanks !? Just got a couple. Rich W1GBB
-------- Original message --------
From: "'Randall' N0UTJ@... [FT817]"
Date: 4/19/19 22:37 (GMT-05:00)
To: FT817@...
Subject: RE: [FT817] Re: Power pole adapter
? ?
?
eBay, of
course...
?
?
?
Randall From: FT817@... [mailto:FT817@...] Sent: Friday, April 19, 2019 4:56 PM To: FT817@... Subject: RE: [FT817] Re: Power pole adapter Where is that pigtail available ? Sent
from AOL Mobile Mail Get the new AOL app: On?Friday, April 19, 2019,?'Randall'
N0UTJ@... [FT817]??wrote:
|
Re: Power pole adapter
开云体育I don't know of? any other radio that so many operators devise so many ingenious ways of powering.?-------- Original message -------- From: "'Randall' N0UTJ@... [FT817]" <FT817@...> Date: 4/20/19 17:09 (GMT-05:00) To: FT817@... Subject: RE: [FT817] Re: Power pole adapter ? ?
?
?
I
ordered 5 myself, why 5,?I don't
know............
?
?
Randall From: FT817@... [mailto:FT817@...] Sent: Saturday, April 20, 2019 11:04 AM To: FT817@... Cc: captrjbowen@... Subject: RE: [FT817] Re: Power pole adapter Thanks !? Just got a couple. Rich W1GBB
-------- Original message --------
From: "'Randall' N0UTJ@... [FT817]" <FT817@...>
Date: 4/19/19 22:37 (GMT-05:00)
To: FT817@...
Subject: RE: [FT817] Re: Power pole adapter
? ?
?
eBay, of
course...
?
?
?
Randall From: FT817@... [mailto:FT817@...] Sent: Friday, April 19, 2019 4:56 PM To: FT817@... Subject: RE: [FT817] Re: Power pole adapter Where is that pigtail available ? Sent
from AOL Mobile Mail Get the new AOL app: On?Friday, April 19, 2019,?'Randall'
N0UTJ@... [FT817]?<FT817@...>?wrote:
|
Re: Power pole adapter
?
toggle quoted message
Show quoted text
?
?
?
I
ordered 5 myself, why 5,?I don't
know............
?
?
Randall From: FT817@... [mailto:FT817@...] Sent: Saturday, April 20, 2019 11:04 AM To: FT817@... Cc: captrjbowen@... Subject: RE: [FT817] Re: Power pole adapter Thanks !? Just got a couple. Rich W1GBB
-------- Original message --------
From: "'Randall' N0UTJ@... [FT817]"
Date: 4/19/19 22:37 (GMT-05:00)
To: FT817@...
Subject: RE: [FT817] Re: Power pole adapter
? ?
?
eBay, of
course...
?
?
?
Randall From: FT817@... [mailto:FT817@...] Sent: Friday, April 19, 2019 4:56 PM To: FT817@... Subject: RE: [FT817] Re: Power pole adapter Where is that pigtail available ? Sent
from AOL Mobile Mail Get the new AOL app: On?Friday, April 19, 2019,?'Randall'
N0UTJ@... [FT817]??wrote:
|
Re: Power pole adapter
toggle quoted message
Show quoted text
-------- Original message -------- From: "'Randall' N0UTJ@... [FT817]" <FT817@...> Date: 4/19/19 22:37 (GMT-05:00) To: FT817@... Subject: RE: [FT817] Re: Power pole adapter ? ?
?
eBay, of
course...
?
?
?
Randall From: FT817@... [mailto:FT817@...] Sent: Friday, April 19, 2019 4:56 PM To: FT817@... Subject: RE: [FT817] Re: Power pole adapter Where is that pigtail available ? Sent
from AOL Mobile Mail Get the new AOL app: On?Friday, April 19, 2019,?'Randall'
N0UTJ@... [FT817]?<FT817@...>?wrote:
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