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You really don't need a cable, the LA-1K is RF sensing and will follow band changes.? Billy Parkinson
KG5RQZ
WRYA510
HH 11724
COR RACES 306
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I can't seem to find instructions for creating a Flex to LA-1K amplifier.? Anyone have one and can send instructions to build one?
?
Thanks... Bob KK8ZZ
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
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Show quoted text
From: [email protected] <[email protected]>
On Behalf Of cturner craigturner.com via groups.io
Sent: Friday, December 20, 2024 10:38 AM
To: [email protected]
Subject: Re: [la1k] Palstar LA-1K and Heavy Duty Cycle Activity
?
Guys
?
I love the amp also.? Run FT8 mostly with it and try to stay below 63C, so up and down on the input.? 15w in gives me about 350w out, also running 220v.? Running the amp into
the Palstar Auto tuner and then 4 element SteppIR, so SWR is great on all bands!
?
?
It is my understanding from PalStar that the ICAS power rating is 1kw while the CCS rating is about 225W.? CCS is continuous 24/7.? Mine sits in a shelf with an exhaust fan in the back.? Works fine with Fldigi and WinLink VARA HF at 250-300W
and stays below 60C.
Don’t exceed 60W drive and keep VSWR <2.2.? I use a manual tuner.? Gas discharge lightning protection can cause problems, beware!
?
Thank you for the swift response!? The information you and others provided has helped to reinforce my decision to consider the LA-1k as an addition to my shack. Like you I will provide 220V for best efficiency.
I currently use a Palstar AT2KD manual tuner and thinking about the HF-AUTO tuner.
Best?regards Barry and thank you again.
Sent from my Verizon, Samsung Galaxy smartphone
Get
?
?
Hi Bill. I run mine around 700w on rtty during contests without any problem. Been a rock solid performer for me. The highest temp it’s gotten to is 68C, then I back off a bit with the drive and TX, until it cools down to 60C. With lower
output around 400w it stays around 55C-63C. There are 3 stages to the fan speed. It cools off quite fast.? I use 220v for my amp. It’s got many hard hours on it and very pleased with its performance.?
I don’t ever overdrive it. 50w max drive or 40amps max (appears on the panel).?
Panel is very useful for swr, power and temperature.?
It’s been a workhorse as I turn it on nearly every day for the past 5 years.?
I am currently considering the purchase of a LA-1k amplifier to support my Kenwood TL-921 which does not cover 6 Meter.
Can anyone provide me with any experience with the LA-1K and heavy duty cycle activities such as the Fldigi modes?
?
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La-1K hanging in transmit
I just developed a problem for some unknown reason. Every band every transmission when I unkey thr LA-1k will remain in transmit and kills my receive of course. SWR 1.2 and display shows TX AMP but no power is coming out. Must me sensing a marginal ground some where. Before I contact Palstar I thought I would try and see if anybody has any ideas. Placed dummy load on each coax port and does say thing. Got a OVERDRIVEN error a couple of times using a 20 watt qrp rig for the exciter. Replaced PTT key line. Dont use a ALC line.
?
Thanks
Ferrell
N4FRL
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Ok Very good!
TNX for thinking about it. I am really bummed, not about the AMP. Its amazing, but about the fact that my Barrett wont drive it correctly. I know? I could work around it, but I was trying to get by on the cheap. Barrett has a 1k amp that will do the job perfectly but they cost about 30k!
?
AL7PI
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Barry (VE6UM):
Thank you for the RTTY application information. Gud to see the amp serves you well during contest activity.? Your response is most appreciated Barry.
73
Bill K
KC2VUT
?
All Gave Some
Some Gave All
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Don (Kt3V)
Thank you, Don, for the ICAS and CCS rating information.? And great to know about the Gas discharge possible issues.
Most appreciated Don.
73
Bill K
KC2VUT
?
All Gave Some
Some Gave All
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Craig: (cturner)
Thank you for the response to my inquiry. F/B running FT8. Your response is most appreciated.
73
Bill K
KC2VUT
?
All Gave Some
Some Gave All
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Art:? (W1SWL)
Thank you for the helpful information. Most appreciated. Good luck with the RF-2K-S amp.
73
Bill K
KC2VUT
All Gave Some
Some Gave All
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
I had the LA-1K for about 2 years. ?It ran great with my 101MP. ?It was paired with the HF-AUTO tuner.
The 1K is a solid performer for sure.
I fashioned a cable from the 101MP to the LA-1K to inform the LA-1K about band information.
That worked very well. ?The 1K would follow the 101MP should I change bands.
?
My only tribulation with the LA-1K was the "one speed on full fan" and its noise.
It has found a new home, ?and the new owner is also very happy with it.
?
I now am running the RF-Kit RF2K-S amplifier which is full legal limit and is essentially quiet.
My current setup is the ANAN G2 (THETIS SOFTWARE) ?<-> RFKIT RF2K-S <-> FLEX TUNER GENIUS <-> FLEX ANTENNA GENIUS> to 3 antennas
These make a remarkable tower of power which employs "pure signal" so no spurious transmissions nor over driving.
?
BTW, my HF-AUTO is available should any of you need a self "present" for Xmas.
73?
Art W1SWL
?
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Guys
?
I love the amp also.? Run FT8 mostly with it and try to stay below 63C, so up and down on the input.? 15w in gives me about 350w out, also running 220v.? Running the amp into
the Palstar Auto tuner and then 4 element SteppIR, so SWR is great on all bands!
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Don Opdycke (KT3V) via groups.io
Sent: Friday, December 20, 2024 10:29 AM
To: [email protected]
Subject: Re: [la1k] Palstar LA-1K and Heavy Duty Cycle Activity
?
It is my understanding from PalStar that the ICAS power rating is 1kw while the CCS rating is about 225W.? CCS is continuous 24/7.? Mine sits in a shelf with an exhaust fan in the back.? Works fine with Fldigi and WinLink VARA HF at 250-300W
and stays below 60C.
Don’t exceed 60W drive and keep VSWR <2.2.? I use a manual tuner.? Gas discharge lightning protection can cause problems, beware!
?
Thank you for the swift response!? The information you and others provided has helped to reinforce my decision to consider the LA-1k as an addition to my shack. Like you I will provide 220V for best efficiency.
I currently use a Palstar AT2KD manual tuner and thinking about the HF-AUTO tuner.
Best?regards Barry and thank you again.
Sent from my Verizon, Samsung Galaxy smartphone
Get
?
?
Hi Bill. I run mine around 700w on rtty during contests without any problem. Been a rock solid performer for me. The highest temp it’s gotten to is 68C, then I back off a bit with the drive and TX, until it cools down to 60C. With lower
output around 400w it stays around 55C-63C. There are 3 stages to the fan speed. It cools off quite fast.? I use 220v for my amp. It’s got many hard hours on it and very pleased with its performance.?
I don’t ever overdrive it. 50w max drive or 40amps max (appears on the panel).?
Panel is very useful for swr, power and temperature.?
It’s been a workhorse as I turn it on nearly every day for the past 5 years.?
I am currently considering the purchase of a LA-1k amplifier to support my Kenwood TL-921 which does not cover 6 Meter.
Can anyone provide me with any experience with the LA-1K and heavy duty cycle activities such as the Fldigi modes?
?
|
Re: Palstar LA-1K and Heavy Duty Cycle Activity
It is my understanding from PalStar that the ICAS power rating is 1kw while the CCS rating is about 225W.? CCS is continuous 24/7.? Mine sits in a shelf with an exhaust fan in the back.? Works fine with Fldigi and WinLink VARA HF at 250-300W and stays below 60C.
Don’t exceed 60W drive and keep VSWR <2.2.? I use a manual tuner.? Gas discharge lightning protection can cause problems, beware!
Don/KT3V
Barry:
Thank you for the swift response!? The information you and others provided has helped to reinforce my decision to consider the LA-1k as an addition to my shack. Like you I will provide 220V for best efficiency.
I currently use a Palstar AT2KD manual tuner and thinking about the HF-AUTO tuner.
Best?regards Barry and thank you again.
73
Bill K
KC2VUT
All Gave Some
Some Gave All
Sent from my Verizon, Samsung Galaxy smartphone
Get
Hi Bill. I run mine around 700w on rtty during contests without any problem. Been a rock solid performer for me. The highest temp it’s gotten to is 68C, then I back off a bit with the drive and TX, until it cools down to 60C. With lower output
around 400w it stays around 55C-63C. There are 3 stages to the fan speed. It cools off quite fast.? I use 220v for my amp. It’s got many hard hours on it and very pleased with its performance.?
I don’t ever overdrive it. 50w max drive or 40amps max (appears on the panel).?
Panel is very useful for swr, power and temperature.?
It’s been a workhorse as I turn it on nearly every day for the past 5 years.?
Enjoy.?
73
Barry?
VE6UM
I am currently considering the purchase of a LA-1k amplifier to support my Kenwood TL-921 which does not cover 6 Meter.
Can anyone provide me with any experience with the LA-1K and heavy duty cycle activities such as the Fldigi modes?
Bill K
KC2VUT
All Gave Some
Some Gave All
|
Re: Palstar LA-1K and Heavy Duty Cycle Activity
Pete:
Thank you?for the offer.? Gonna continue with considering a purchase with warranty.? Most of the shack is boat anchors would like to upgrade with new equipment if I can afford it.
Best Regards Pete
Bill K
KC2VUT
All Gave Some
Some Gave All
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Show quoted text
Ok I will just do the work and a sell the LA-1K through my regular channels. Thought I could kill two birds with one stone.
?
PM
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Ok I will just do the work and a sell the LA-1K through my regular channels. Thought I could kill two birds with one stone.
?
PM
|
Re: Palstar LA-1K and Heavy Duty Cycle Activity
Barry:
Thank you for the swift response!? The information you and others provided has helped to reinforce my decision to consider the LA-1k as an addition to my shack. Like you I will provide 220V for best efficiency.
I currently use a Palstar AT2KD manual tuner and thinking about the HF-AUTO tuner.
Best?regards Barry and thank you again.
73
Bill K
KC2VUT
All Gave Some
Some Gave All
Sent from my Verizon, Samsung Galaxy smartphone
Get
toggle quoted message
Show quoted text
Hi Bill. I run mine around 700w on rtty during contests without any problem. Been a rock solid performer for me. The highest temp it’s gotten to is 68C, then I back off a bit with the drive and TX, until it cools down to 60C. With lower output
around 400w it stays around 55C-63C. There are 3 stages to the fan speed. It cools off quite fast.? I use 220v for my amp. It’s got many hard hours on it and very pleased with its performance.?
I don’t ever overdrive it. 50w max drive or 40amps max (appears on the panel).?
Panel is very useful for swr, power and temperature.?
It’s been a workhorse as I turn it on nearly every day for the past 5 years.?
Enjoy.?
73
Barry?
VE6UM
I am currently considering the purchase of a LA-1k amplifier to support my Kenwood TL-921 which does not cover 6 Meter.
Can anyone provide me with any experience with the LA-1K and heavy duty cycle activities such as the Fldigi modes?
Bill K
KC2VUT
All Gave Some
Some Gave All
|
Re: Palstar LA-1K and Heavy Duty Cycle Activity
Pete Marsh?
To:barplo@...
?
Thu, Dec 19 at 9:43 PM
?
?
Hi Bill,
I have a brand new LA-1K that I would be willing to part with. I have had it a few months, and It does not really do what I need it to do. I am a HAM, But I am not really very active on HAM Radio. I do mostly Military and commercial operating. I use a Barrett 4050 SDR commercial HF radio and I operate ALE. For some reason my LA-1k doesn't like my Barrett. The Barrett doesn't use a traditional ALC circuit. The Barrett tends to over drive the amp and it shuts down. I have no way to control the drive level on my Barrett except to reduce the RF PWR level in watts. I end up running my radio on low pwr. But then I get distorted audio rprt's from RX stations. I tried the amp with my Icom F8101 and it works great! I can adjust the ALC and AUDIO drive on the Icom. Are you interested in the idea of buying one that is very slightly used? I am a sales rep for Royal communications (the Barrett distributor for the US) and my reputation is very important for my sales work. I will give my word that this amp is 100% operational and not a scratch on it.
?
Should we talk?
?
Regards
?
Pete Marsh
Project Manager
Skywave communications consulting LLC
180 west kristy dr.
Wasilla, Alaska 99654
907-355-4160
email: sierrahoteldog@...?
Barrett sales:?sales@...
?
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Re: Palstar LA-1K and Heavy Duty Cycle Activity
Hi Bill. I run mine around 700w on rtty during contests without any problem. Been a rock solid performer for me. The highest temp it’s gotten to is 68C, then I back off a bit with the drive and TX, until it cools down to 60C. With lower output around 400w it stays around 55C-63C. There are 3 stages to the fan speed. It cools off quite fast.? I use 220v for my amp. It’s got many hard hours on it and very pleased with its performance.?
I don’t ever overdrive it. 50w max drive or 40amps max (appears on the panel).? Panel is very useful for swr, power and temperature.?
It’s been a workhorse as I turn it on nearly every day for the past 5 years.?
Enjoy.?
73 Barry? VE6UM
I am currently considering the purchase of a LA-1k amplifier to support my Kenwood TL-921 which does not cover 6 Meter.
Can anyone provide me with any experience with the LA-1K and heavy duty cycle activities such as the Fldigi modes?
Bill K
KC2VUT
All Gave Some
Some Gave All
|
Palstar LA-1K and Heavy Duty Cycle Activity
I am currently considering the purchase of a LA-1k amplifier to support my Kenwood TL-921 which does not cover 6 Meter.
Can anyone provide me with any experience with the LA-1K and heavy duty cycle activities such as the Fldigi modes?
Bill K
KC2VUT
All Gave Some
Some Gave All
|
David,
I have experienced a problem with a failed power output device that allegedly was due to improper torquing of the device to the heat sink. Palstar replaced the failed power device for free and reworked the unit, and I think I paid return shipping or something like that (about $25). In any event, it was a very fair arrangement. If the unit you are looking at works now, and it is from 2019, the chances are it is in good shape. For me, it has been a "go" or "no go" type of device; there is no grey operational zone.
The plus side is that Paul, the president of Palstar, and the staff there are great albeit a little overworked. I highly recommend the amplifier. I have other of their products, and, as a formed RF design engineer, I can tell you that their products are well done. As far as service is concerned, you know the old saw, you can have it done well, done fast, or done cheap, but your can only pick two of the three options. My service has been done well and at a fair price, so if you need service, prepared to be patient. In my experience, it took twice as long as I expected to get the unit back (6-8 weeks), but it was worth it.
Good luck,
Bob, N3BD
On Thursday, November 14th, 2024 at 12:11 AM, David Ashley via groups.io <imjustdave@...> wrote:
Looking at a used LA1k anything specific I should be aware of ?? 2019 vintage if that matters :)?
--
David
-W7GEL
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Billy Parkinson
Pete Marsh