[Amps] Chippewa amplifier

[Carl]

And the SB-1000 has a lighter duty transformer than even the AL-80A. Heath 
sure didnt like heavy iron in the SB years.

Carl
KM1H


----- Original Message ----- 
From: "BJ" <fxb1982 at hotmail.com>
To: <jtml at vla.com>
Cc: <amps at contesting.com>
Sent: Thursday, March 26, 2015 11:42 PM
Subject: Re: [Amps] Chippewa amplifier


> Divide the SB-220 by two and add 160 = AL-80A/B, SB-1000.
>
> 73, k0cwo
>
>
>
>> On Mar 26, 2015, at 10:31 PM, John Lyles <jtml at losalamos.com> wrote:
>>
>> The SB220 is considered by many to be a light to medium duty amplifier, 
>> as the cooling fan and the voltage doubler power supply cannot support 
>> operating those 3-500Z key down for significant time. I have one, but 
>> haven't seem them for $500 in a number of years.
>>
>> The Chippewa, unlike the later Warrior, was overbuilt from the start, 
>> having a separate HV power supply box as big as the PA section. It also 
>> had a real blower ducted through the two 4-400A chimneys. I have one of 
>> these also.
>>
>> I think the two Heathkits represent completely different design goals 
>> from the company. SB220 was an incredible deal for its capability, no 
>> doubt. If you just want RF power, and don't mind the limited duty factor, 
>> its a nice unit.
>>
>> 73
>> John
>> K5PRO
>>
>>
>>> ------------------------------
>> Message: 2
>>> Date: Sun, 22 Mar 2015 08:35:09 -0700
>>> From: Tom Osborne <w7why at frontier.com>
>>> To: amps at contesting.com
>>> Subject: Re: [Amps] Chippewa amplifier
>>
>>> Wow - $1000??
>>> Be much better off to get a SB-220 for half that.  73
>>> Tom W7WHY
>>
>>>> On 3/21/2015 10:58 PM, John Lyles wrote:
>>>> On ebay, I saw a Chippewa model KL-1 without power supply, pair
>>>> 4-400A, 1960:
>>>>
>>>> http://www.ebay.com/itm/Rare-Vintage-Heathkit-Tube-Linear-Amplifier-Chippewa-KL-1-for-Ham-Radio-/281630963209?pt=LH_DefaultDomain_0&hash=item4192837609
>>
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