[Boatanchors] Amps for QRP rigs

[Jim Brannigan]

The 811-A amplifier uses fewer parts and should not have to be neutralized.
While not shown, a small fan would be a good addition.

Jim
----- Original Message ----- 
From: "DW Holtman" <tubestuff at comcast.net>
To: "Jim Brannigan" <jbrannig at optonline.net>; "Jim Wilhite" 
<w5jo at brightok.net>; <boatanchors at mailman.qth.net>
Sent: Saturday, March 15, 2008 2:23 PM
Subject: Re: [Boatanchors] Amps for QRP rigs


> Hello,
>
> Thanks to everyone for some of the great ideas. Jim, W5JO suggested a 60's 
> ARRL handbook. I have a 1966 edition. It has two suitable amps in it, one 
> uses a pair of 6146Bs and the other uses an 811-A.  I will have to look 
> both of them over very carefully and decide which has parts the most 
> available. But, they both look doable. I think I already have the iron for 
> the power supplies, will still need most of the rest. I have a pair of 
> 6146W and a pair of 6146 plain tubes, but no 811-a.
>
> This should make a great project, that is not too complicated and I 
> "think" I can tackle.
>
> Any suggestions on which way to go, as far as tubes go from experienced 
> builders would be greatly appreciated.
>
> Best,
> DW Holtman
> WB7SSN
>
> ----- Original Message ----- 
> From: "Jim Brannigan" <jbrannig at optonline.net>
> To: "Jim Wilhite" <w5jo at brightok.net>; <boatanchors at mailman.qth.net>
> Sent: Saturday, March 15, 2008 11:08 AM
> Subject: Re: [Boatanchors] Amps for QRP rigs
>
>
>> The 60's ARRL Handbook has a 2X 6146 bandswitching amplifier circuit.
>>
>> Jim
>>
>>
>>> About all one can do for that kind of amp is build one.  Say a pair of 
>>> 6146s or so.  Copy the final amp section of a DX 100, B&W 5100 or so in 
>>> a separate box.
>>>
>>> Jim/W5JO
>>>
>>>
>>> ----- Original Message ----- 
>>> From: "Revcom" <revcom at wbsnet.org>
>>>
>>>
>>>
>>>> That's about all there is out there.  There were some very well built
>>>> "ham" amps targeted for the CB market that actually had band switching
>>>> filters and tuned outputs.  Most however are "trash in-trash 
>>>> out"/amplified.
>>>>
>>>> Rod
>>>> K0EQH
>>>>
>>>
>>>> From: "DW Holtman" <tubestuff at comcast.net>
>>>>
>>>> Hello,
>>>>
>>>> Does anyone make a good quality 100 watt HF Amp? Something that will 
>>>> amplify
>>>> from around 5 watts fo around a 100 watts on 80 through 10. The only 
>>>> thing
>>>> that I can find are a bunch of 10 meter (CB??) amps for SSB and AM.
>>>>
>>>> Thank you in advance.
>>>>
>>>> Best,
>>>> DW Holtman
>>>> WB7SSN
>>>
>>> _______________________________________________
>> _______________________________________________
>