If you had looked in my signature below, you would have found this link:
http://www.frenning.dk/oz1pif.htm
jeremy-ca skrev:
> What home page???
>
> Carl
>
>
> ----- Original Message ----- From: "Peter Frenning [OZ1PIF]"
> <peter@frenning.dk>
> To: "jeremy-ca" <km1h@jeremy.mv.com>
> Cc: "AMPS" <amps@contesting.com>; "Bill Fuqua" <wlfuqu00@uky.edu>
> Sent: Saturday, March 01, 2008 11:16 AM
> Subject: Re: [Amps] Class-E Amplifiers
>
>
>> No spectrum plots or IMD figures, unfortunately. Lots of detailed
>> information (enough for reproduction anyway) on my homepage.
>> Several thousand QSOs under the belt with it and no complaints heard,
>> so nothing obvious is wrong with its output or linearity.
>>
>> jeremy-ca skrev:
>>> That is impressive Peter. Do you have any details, spectrum plots, etc?
>>>
>>> Carl
>>> KM1H
>>>
>>>
>>> ----- Original Message ----- From: "Peter Frenning [OZ1PIF]"
>>> <peter@frenning.dk>
>>> To: "jeremy-ca" <km1h@jeremy.mv.com>
>>> Cc: "AMPS" <amps@contesting.com>; "Bill Fuqua" <wlfuqu00@uky.edu>
>>> Sent: Friday, February 29, 2008 6:04 PM
>>> Subject: Re: [Amps] Class-E Amplifiers
>>>
>>>
>>>> Carl
>>>> I'm using IRF510 on six (50MHz) to produce 500W in Class AB. Judged
>>>> from my efforts to tame the beast, they should be able to switch
>>>> fast enough to do Class E at least as high as that!
>>>>
>>>> jeremy-ca skrev:
>>>>> I should have been more specific.
>>>>>
>>>>> When using power Mosfets of the IRF and similar cheapies numbers
>>>>> which is what many hams appear to be using on MF and low HF.
>>>>>
>>>>> Carl
>>>>> KM1H
>>>>>
>>>>> ----- Original Message ----- From: "Bill Fuqua" <wlfuqu00@uky.edu>
>>>>> To: "jeremy-ca" <km1h@jeremy.mv.com>; "AMPS" <amps@contesting.com>
>>>>> Sent: Friday, February 29, 2008 3:57 PM
>>>>> Subject: Re: [Amps] Class-E Amplifiers
>>>>>
>>>>>
>>>>>
>>>>>> No, they are making class-E amplifiers up in the microwave range
>>>>>> now.
>>>>>> Naturally they don't have such high efficiencies as they have at
>>>>>> HF frequencies.
>>>>>> But broadcast triodes in class-C have been able to get 80 to 90
>>>>>> percent plate efficiency.
>>>>>> 73
>>>>>> Bill wa4lav
>>>>>>
>>>>>>
>>>>>> At 03:28 PM 2/29/2008 -0500, jeremy-ca wrote:
>>>>>>
>>>>>>> Arent Class E monoband amps and pretty much with a 7 MHz upper
>>>>>>> limit?
>>>>>>>
>>>>>>> At least that was what I was told by an active E builder who had
>>>>>>> a 400W 75M
>>>>>>> AM amp inside about a 17 x 12 x 3 chassis minus the PS. I was
>>>>>>> impressed but
>>>>>>> I still like the glow of my 250TH's and 304TL's ! Even tho it
>>>>>>> takes up a lot
>>>>>>> of space and weighs a ton.
>>>>>>>
>>>>>>> Carl
>>>>>>> KM1H
>>>>>>>
>>>>>>> ----- Original Message -----
>>>>>>> From: "Bill Fuqua" <wlfuqu00@uky.edu>
>>>>>>> To: "AMPS" <amps@contesting.com>
>>>>>>> Sent: Friday, February 29, 2008 10:12 AM
>>>>>>> Subject: [Amps] Class-E Amplifiers
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Class E amplifiers have high efficiency but what about gain
>>>>>>>> and drive
>>>>>>>> power. Some that I have see have about 10db gain but unlike
>>>>>>>> tube type
>>>>>>>> Grounded Grid amplifiers
>>>>>>>> I don't think any of the input power goes to the output. If so
>>>>>>>> this would
>>>>>>>> reduce the overall efficiency of a single stage amplifier and
>>>>>>>> driver if
>>>>>>>> the driver is not Class-E.
>>>>>>>>
>>>>>>>> 73
>>>>>>>> Bill wa4lav
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Amps mailing list
>>>>>>>> Amps@contesting.com
>>>>>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Amps mailing list
>>>>> Amps@contesting.com
>>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>>>
>>>>>
>>>>
>>>> --
>>>> Vy 73 de OZ1PIF/5Q2M, Peter
>>>>
>>>> ** CW: Who? Me? You must be joking!! **
>>>> email: peter(no-spam-filler)@frenning.dk
>>>> http://www.frenning.dk/oz1pif.htm
>>>> Ph. +45 4619 3239
>>>> Snailmail:
>>>> Peter Frenning
>>>> Ternevej 23
>>>> DK-4130 Viby Sj.
>>>> Denmark
>>>> ***********************************
>>>>
>>>>
>>>
>>>
>>
>> --
>> Vy 73 de OZ1PIF/5Q2M, Peter
>>
>> ** CW: Who? Me? You must be joking!! **
>> email: peter(no-spam-filler)@frenning.dk
>> http://www.frenning.dk/oz1pif.htm
>> Ph. +45 4619 3239
>> Snailmail:
>> Peter Frenning
>> Ternevej 23
>> DK-4130 Viby Sj.
>> Denmark
>> ***********************************
>>
>
>
--
Vy 73 de OZ1PIF/5Q2M, Peter
** CW: Who? Me? You must be joking!! **
email: peter(no-spam-filler)@frenning.dk
http://www.frenning.dk/oz1pif.htm
Ph. +45 4619 3239
Snailmail:
Peter Frenning
Ternevej 23
DK-4130 Viby Sj.
Denmark
***********************************
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