开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Re: 120/240V switch?


 

开云体育

Nice to know Ray,

?

This is only my 2nd amp since 1984. Old one was SB220 and was ok, but not as good as this amp (full 1k out, warc and 6m&160m). Wasn’t cheap for paying exchange rate to US dollar. Came out to $5000 CAN. I would have rather lived in the USA and paid $3700.

So if some of you are griping about how much it cost, try paying $1300 more, and I had to send mine in for repair and due to customs and shipping (NOT CHEAP. Add $500 more for this) because of a bad Capacitor. I never had any issues with Palstar and found them very

nice over the phone. Just wish there was a Canadian repair depot if ever needed to save border and shipping costs. Not fun playing the Customs game.

?

Further good news. Since the repair, amp has been rock solid. I use this amp nearly every day. And run it a lot, especially during contests. Trust me, this LA1K amp has many hours on it and is only a few years old. I use it on 160m to 6m and is a very dependable and reliable addition to my

Station. I am hoping this amplifier will last me as long as the good ole SB220 has been around (as my SB220 was used) for over 40 years. Only the test of time holds true to such matters and so far so good. As for Amplifiers in general, I own 2 other as expensive amplifiers for my home theatre

and they are also solid state and 1 had to go in for repair (only a year old) for a blown centre channel. Who knows how long electronic parts last… Just because it says made in Canada or Made in USA doesn’t mean the parts are made there. Maybe in some cases the word “Assembled”

may be more appropriate. However, I do believe the LA1K to be of excellent craftsmanship from my level of expertise.

?

73

Barry

VE6UM

?

From: [email protected] <[email protected]> On Behalf Of Michael Kelly
Sent: April 4, 2023 10:05 AM
To: [email protected]
Subject: Re: [la1k] 120/240V switch?

?

Thanks Kent, I wish all owners would look at the product overall instead of cranking about it.? My LA1K is over 2 years old with moderate use, never a hiccup?running 750-900 wts driving at 40 watts.? Tuner is AT2KD running into a Zero 5 40 meter vert. which I use on 15 meters also. Very good sig?reports. I have owned and used several amps since being licensed in the early 1970s and find this one to be the best if the bunch (sb 220, B&W 2500, Acom 1000, National?NCL 1000, home brew 4-1000, )? Mike N1BLW

?

On Tue, Apr 4, 2023 at 11:34?AM tuneupmagic (null) via <tuneupmagic=[email protected]> wrote:

Lol.. anybody heard of counterfeit semiconductor devices??

?

73,

Ray

KJ5MI

?


On Apr 4, 2023, at 10:46 AM, k6wez <kj6wez@...> wrote:

?

More misinformation. Those devices are readily available. Just got 1 off ebay. Several dealers selling brand new from $ 125.00. Also Amazon.?

?

On Tue, Apr 4, 2023, 3:13 AM tuneupmagic via <tuneupmagic=[email protected]> wrote:

Hi Fred,

In his Nov-2018 ARRL review of the LA-1K, Dr. Terry G. Glagowski, W1TR, states "Palstar has changed to a different input relay, and they updated the review unit under warranty."? Sounds to me the LA-1K has been a work in progress, with poor KPP (key performance parameter) design requirements, from day one!? I couldn't agree more that the circuit forcing the amp into standby if hit with too much power, should have been part of the original design.

Oh btw, in the same ARRL review of the LA-1K, Dr. Glagowski states the amp has "a pair of NXP MRFE6VP5600H 600 W LDMOS transistors and a 50 V switch-mode power supply."? In this NXP page you will find that the OEM states "Not Recommended for New Designs" referring to the MRFE6VP5600H.

Seeing that those original LDMOS transistors have been deemed obsolete by the OEM, likely with limited sources of supply, sure hope the ones currently installed in the LA-1K would stay fully functional for a long, long time.

73,
Ray
KJ5MI

Join [email protected] to automatically receive all group messages.