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Re: [Amps] Pi/L in Ameriton amps?

To: Dave M <slash_dot@msn.com>
Subject: Re: [Amps] Pi/L in Ameriton amps?
From: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 26 Jan 2011 13:35:00 +0100
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Yes, you are right....   I was confused because I thought it said "pi-l" in the 
specs sheet. But it doesn't.

Still my question applies to the bigger amplifiers. For example the 
specifications of AL-1500 says "pi-l" but if you check the schematics, the 
third coil, after C2, called L4 is only tapped once!


73's

Ulf (SM0NOR)
ulf@sm0nor.com



On 26 jan 2011, at 13.16, Dave M wrote:

> 
> I hate the layout of the supplied schematic , but it is a standard Pi network 
> not PiL the second coil is strictly for the higher freqs
> 
> 
> ......................................................................................................
> 
> 73     VE3DV , Dave
> 
> 
> 
> 
> 
>> From: ulf@sm0nor.com
>> Date: Wed, 26 Jan 2011 13:04:07 +0100
>> To: amps@contesting.com
>> Subject: [Amps] Pi/L in Ameriton amps?
>> 
>> I'm helping a friend of mine who bought a damaged 811H. Transformer and 
>> tubes where gone. New transformer is on the way from Ameritron and tubes we 
>> found locally. I think we will have it up and running on no time! Now my 
>> question: is it a pi/l tank in this amp? The manual says so but the second 
>> coil has only two tappings. Does it mean that the high bands goes through 
>> the same inductance and the low bands go through the whole coil? What does 
>> it do for the intermediate resistance? I noticed all Ameritron amps are the 
>> same. 
>> 
>> Sent from my iPhone
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