I run temporary on 120v and get 400w out easy.?
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Think I figured out a way to have 220volts.looking forward to using the amplifier. I ORDERED IT today but there backordered.
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Backordered? Wow, i,heard they were selling alot during covid. Good news.?
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On Jun 29, 2020, at 6:15 PM, Steve Shep <shepsvettes@...> wrote:
?Think I figured out a way to have 220volts.looking forward to using the amplifier. I ORDERED IT today but there backordered.
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Think I figured out a way to have 220volts.looking forward to using the amplifier. I ORDERED IT today but there backordered.
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Before I ran my 240V line, on a pretty heavily used 120 circuit, my whole shack with computers and audio gear on it, I was getting 700 out before it would shut down from the sag (never blew the breaker). It’s worth putting a 240V line in but this amp is impressively efficient with the power draw.?
On Sun, Jun 28, 2020 at 5:30 PM Barry < barplo@...> wrote: I get 1k out with mine on 240v. ?Thinking about buying a LA-1k? ?What power output should I expect on 6 meters? I will running on 120 volts.
-- 73? de?Chris?-- KC2RGW
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˙dn ?p?s ????? ?o??uo? ?no? u?n?
?s???d 's??? ?u?p??? ??? no? ??
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I get 1k out with mine on 240v.
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On Jun 28, 2020, at 12:02 PM, Steve Shep <shepsvettes@...> wrote:
?Thinking about buying a LA-1k? ?What power output should I expect on 6 meters? I will running on 120 volts.
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Too bad you don't have an electric stove close by to tap into the 220.
I get about 900 out pretty easy with a 1:1 swr on 6 meters and about 45 watts in. Paul
Thinking about buying a LA-1k? ?What power output should I expect on 6 meters? I will running on 120 volts.
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Thinking about buying a LA-1k? ?What power output should I expect on 6 meters? I will running on 120 volts.
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I have a multiband yagi that covers 6 thru 40m.? ?On 40m, one of the capacitance spokes on the director fell off, and the SWR on my net frequency went from 1.5:1 to 2.0:1.
The finals in the LA1K are rated at 65:1 SWR, so I am not concerned about the finals, and the amp is working fine with 30W drive and approx 500W out.? The amp is reading 1.9 SWR and the HF-AUTO in bypass is reading 2.12:1.? The HF-Auto always shows a higher SWR.? What is the maximum power the amp will allow at 2:1 SWR before the protection circuit kicks in?? I am not wanting to "try it" to see.? I doubt it would damage the amp, but not going to risk it.
BTW, the reason I am asking and not just using the HF-AUTO is because I am planning on running the antenna directly into the AMP, to free up a slot on the tower mounted 4 position coax switch.
N5GGG
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Re: Remoting a LA-1K with Flex 6400
New information from experimentation
If I run the autotuner with the Amp in Bypass mode, I tend to get a better SWR match?
than if I just ran it in OPR mode.? 1.04 vs 1.55.? ?80M
May be my anecdotal exprerience; would like to see what others find.
73 de W8RBD
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Re: Remoting a LA-1K with Flex 6400
I use direct PTT keying of the amplifier with TX1 and my normal transmit profile uses TX1 to key it.
My TUNE transmit profile disables TX1 so only the 10W from your Flex goes through.
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Re: Remoting a LA-1K with Flex 6400
“So, question:? Why do they say its a perfect combo with the HF-AUTO, if the two dont talk to each other?? Sounds to me like it is the same as using any auto-tuner then." ? Marketing ? ? They do not work together better than any other brand would. ? My HF-Auto works much better using the HF-Auto software that Terry provides and following PC memories instead of tuner memories. ? ? ?
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From: [email protected] < [email protected]> On Behalf Of davenlr@...Sent: Monday, June 1, 2020 4:49 PM To: [email protected]Subject: Re: [la1k] Remoting a LA-1K with Flex 6400 ? Good point.? I just key mine for a second, and let the HF-AUTO retune to its preset.? I don't even have to go through a full tune cycle here (holding the radio in TX mode) since initially setting up the HF-AUTO.? Was not aware the Amp would come back on from SWR shutdown without rekeying it.
So, question:? Why do they say its a perfect combo with the HF-AUTO, if the two dont talk to each other?? Sounds to me like it is the same as using any auto-tuner then.
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Re: Remoting a LA-1K with Flex 6400
Good point.? I just key mine for a second, and let the HF-AUTO retune to its preset.? I don't even have to go through a full tune cycle here (holding the radio in TX mode) since initially setting up the HF-AUTO.? Was not aware the Amp would come back on from SWR shutdown without rekeying it.
So, question:? Why do they say its a perfect combo with the HF-AUTO, if the two dont talk to each other?? Sounds to me like it is the same as using any auto-tuner then.
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Re: Remoting a LA-1K with Flex 6400
Good Afternoon, ??? I have the LA-1K/HF Auto combo.?? Firstly, I would never ask the HF-Auto to tune with the amp in OPR mode.?? If it's in OPR once the SWR gets below 2:1 the amp will automatically kick on (without having to un-key and re-key) and the tuning process will stop since the HF-Auto is programmed not to be tuning when high power is applied (wise choice by Palstar).? I let it tune and when it's finished I engage OPR mode. ? That being said, if you have software that automatically engages the amp when the tuning process is complete it should work fine. (I'm not familiar with Smart SDR)? I just wanted to point out that the amp will automatically come on at low SWR (if it's in OPR mode) and that the tuner will not continue tuning if power is over a certain level (I don't know what that level is, guessing 60 to 100 watts). Dennis
On 6/1/2020 at 2:14 PM, "Bob W8RBD" <dushkoff@...> wrote: no, it is certainly not a dumb comment.? ?If I have the flex set for tune power 10 w, and RF power 30 w,? and I? select TUNE? on smart SDR,? ?while the auto-tuning? occurs, the HF-AUTO Watt meter reads about 15 w,? however, at the end of the auto-tune sequence, it reads output as 220 w.? previously, I did not see that during the tuning sequence it was using lower RF drive (i.e. the "Tune Pwr").? ?I was assuming that it probably would put out what the amplifier output would equal during normal transmission.? Obviously, I do not want to be in auto-tune? process with 1 KW. So looks like the Flex "talks" nicely with the Amp.? ?
So, as a newbie, my question is to other Flex users running the Palstar Amp + HF Auto, this is fairly foolproof?
Thanks Davenlr for the input!
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Re: Remoting a LA-1K with Flex 6400
no, it is certainly not a dumb comment.? ?If I have the flex set for tune power 10 w, and RF power 30 w,? and I? select TUNE? on smart SDR,? ?while the auto-tuning? occurs, the HF-AUTO Watt meter reads about 15 w,? however, at the end of the auto-tune sequence, it reads output as 220 w.? previously, I did not see that during the tuning sequence it was using lower RF drive (i.e. the "Tune Pwr").? ?I was assuming that it probably would put out what the amplifier output would equal during normal transmission.? Obviously, I do not want to be in auto-tune? process with 1 KW. So looks like the Flex "talks" nicely with the Amp.? ?
So, as a newbie, my question is to other Flex users running the Palstar Amp + HF Auto, this is fairly foolproof?
Thanks Davenlr for the input!
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Re: Remoting a LA-1K with Flex 6400
If you can't find a replacement I'd ask Laurent F6DEX to sell you a copy with strict understanding support will end in couple years in 2022.? Perhaps he will make an exception for LA-1K owner. Info2019@trx-manager
Also perhaps Paul at Palstar may have a new Win10 program written for LA-1K if enough folks ask for it.
Just went to the TRX-Manager website, and looks like the developer isn't selling the program anymore, but is supporting updates only to previous purchasers.
Disappointing, as I just got my LA-1K
Does anyone know of an alternative program to remote operate this amp?? I have a Flex 6400 radio, and would at least like remote capability to change the Mode from Standby to Operational during tuning with the HF-AUTO, then be able to put amp back to OPR mode once tuned.
Thanks,
Bob W8RBD
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Re: Remoting a LA-1K with Flex 6400
This may be a dumb comment, but since the amp shuts down if the SWR is high, if you leave it in OPR mode, when you go to tune the HF-AUTO the amp will turn off, the HF-AUTO will tune, then the next keyup with Amp will be in SWR range and transmit without having to switch anything.??
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Remoting a LA-1K with Flex 6400
Just went to the TRX-Manager website, and looks like the developer isn't selling the program anymore, but is supporting updates only to previous purchasers.
Disappointing, as I just got my LA-1K
Does anyone know of an alternative program to remote operate this amp?? I have a Flex 6400 radio, and would at least like remote capability to change the Mode from Standby to Operational during tuning with the HF-AUTO, then be able to put amp back to OPR mode once tuned.
Thanks,
Bob W8RBD
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Re: SWR High SSB ONLY - When Using LA-1K Amp
Keep in mine that if you're using a wire
antenna that is not solidly secured and susceptible to doing a jig
when the wind blows, your SWR is going to be all over the place
regardless of how good a tuner you have.? My OCFD is suspended
between two trees and can jump around as much as 5-feet from its
normal suspension height.? This in spite of having a heavy balun
at the feed-point and LMR-400 feed-line.? The wind can really make
the antenna dance.? This will clearly impact SWR, and LDMOS amps
protect themselves by going into Bypass mode at a much lower SWR
than other amps.? At 100 watts, varying SWR is less of a problem
(and often not noticeable).
I hope to solve the swaying tree problem in the next week or so
with three 50-foot well-guyed masts resting in 4-inch PVC pipes
anchored in five-feet of concrete.
We'll see.
73,
Kent? K9ZTV
On 5/30/2020 12:38 PM, Barry wrote:
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Rich,
interesting to see others having same issues as i am. Just
operating in the cqwpx cw contest this weekend and mines doing it
randomly on CW. Its a real pain to be baby sitting this amp. I may
sell it. I feel like somethings not right with this amp. Im not
sure i wanna call Palstar anymore. And i thought i had it Fully
corrected With going direct mode, forget normal mode, its worse
there. Contesting to me is a true test of performance and this amp
seems lacking in quite a few ways. Maybe we can chat further on
this, but its definitely troublesome. Even on a dummy load.?
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Terminate the amp-tuner into a known good load and see if the condition exists.? If it does, then I'd call Palstar and see what they can suggest.? If it goes away, then I recommend a closer inspection of the antenna system.?
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Keith, have you resolved your issue? Its been awhile And would like to hear how it went? I have same issue is why.
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Paul