[UK-CONTEST] Amplifier Advice Please.

[Colin Wilson]

Brian

I use the SPE Expert 1K-FA and have had no real problems with it in normal 
operation or in a contest environment. Good value for money and the Mk3 has 
extra cooling fans. There is of course the new 2KW version which I am told 
has some very good refinements learned from the 1KW versions.  If you want 
to join my the Yahoo group so you can ask others (many have other amps too) 
then go to yahoo groups and enter spe expert.

Best 73

Colin CT7ACG/G3VCQ
www.glenridgealgarve.com


-----Original Message----- 
From: Chris Tran GM3WOJ
Sent: Thursday, January 19, 2012 8:48 PM
To: uk-contest at contesting.com
Subject: Re: [UK-CONTEST] Amplifier Advice Please.

Hello Brian

I think you would be wise to steer clear of both the ALS1300 and the
Heatherlite.

>From the reviews on eHam, the protection of the MOSFETs in the ALS1300 
>seems
poor - this is a crucial failing which also seems to plague 'Expert'
amplifiers. Any protection circuitry in a solid-state amp has to be
super-fast, or intelligent enough to back things off long before the devices
are damaged.  Tokyo Hi-Power amps are very well designed in this respect.

All Heatherlite amps are/were poor - a hotch potch of R.S. Components -
badly designed and badly constructed.

In your situation I would try getting hold of a valve amplifier - something
like an Alpha 91B will last a long time.  There is quite a wide choice in
this type of amp.

73
Chris
GM3WOJ /  ZL1CT

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