[Amps] Why no 28 MHz

[Hsu]

I just repaired two AL1500s  for my friends,
 i found theat these amps  use difference  choke, the  USA version can not work in 10m, you must replace  the original   choke!  I use a vector network analyser  test it.there is a dip point in 10 meter!
       73!Hsu
----- Original Message ----- 
From: "Mike" <noddy1211 at sbcglobal.net>
To: <amps at contesting.com>
Sent: Wednesday, January 26, 2011 10:38 AM
Subject: Re: [Amps] Why no 28 MHz


> Yes, and in the case of the ALS-500 charges another 30 bucks to get it on
> 12/10 Meters.
> 
> Mike
> 
> -----Original Message-----
> 
> I thought the FCC had changed the rules about 10 meters on commercial 
> ham amps, yet I see that Ameritron still lists their amps 1.8 though 21 
> MHz with 28 MHz on the export models.
> 
> Why?
> 
> 73
> 
> Roger (K8RI)
> 
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