I have several vintage transmitters and a few Class C amps but my favorite
is a Hallicrafters HT-9 driving a pair of 250TH's with 304TL modulators. It
makes all the right noises and everything glows! I havent got around to
restoring a one owner 32V2/75A3 combo yet but Im already collecting parts
for a new amp and modulator.
Carl
KM1H
> The relays and anything else that makes a chirp, burp or crunch when you
> key up is critical to AM operation.
>
> I run legal-limit AM with my Flex-5000A and an 8877, but while everyone
> loves the audio I do take flak that it doesn't take 5 seconds of noisy
> relays and grinding toggle switches to get from RX to TX and back. :-)
>
> 73,
> Jim N7CXI
>
>
> On 11/26/2010 5:32 AM, Carl wrote:
>> You also need to run it as an AM linear and use a couple of large clunky
>> relays that can easily be heard over the air when you hit the PTT on the
>> D-104.
>>
>> I suspect that a pair of those EBM-Papst muffin fans I mentioned on here
>> would give more than adequate cooling with SK-510 sockets.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From:<TexasRF@aol.com>
>> To:<sub1@rogerhalstead.com>;<amps@contesting.com>
>> Sent: Friday, November 26, 2010 8:02 AM
>> Subject: Re: [Amps] A dual 4-1000 amp
>>
>>
>>> Since perception is everything, as they say, you might consider using an
>>> adequate blower for the amplifier and an audio recording of a jet plane
>>> takeoff to play in the background. This could save a ton of $$!
>>>
>>> Then you could turn the sound on/up whenever needed for intimidation or
>>> other motives. Earplugs optional.
>>>
>>> 73,
>>> Gerald K5GW
>>>
>>>
>>>
>>> In a message dated 11/26/2010 6:55:31 A.M. Central Standard Time,
>>> sub1@rogerhalstead.com writes:
>>>
>>>
>>>
>>> On 11/26/2010 7:19 AM, donroden@hiwaay.net wrote:
>>>> If you want that Mig-21 sucking up gravel on an unimproved runway
>>>> sound, go with a couple of Rotron Centrimax CX-33 blowers.
>>>>
>>>> Or, if the XYL doesn't mind a little two-cycle smoke, use a 41cc
>>>> Homelite leaf blower with a tuned pipe.
>>> Although a couple of vacuum cleaner motors will work, a better choice
>>> would be to take the turbine out of a self contained plasma cutter.
>>> Out
>>> in the open they really sing, but ...you did say cash was a problem and
>>> those self contained torches are running a tad shy of two grand.
>>>
>>> Maybe get some of the old vacuum cleaners, put 3 or 4 of the blade sets
>>> on one shaft...a bit of metal work and that sucker will move air AND
>>> make an impressive sound.
>>>
>>> Then again you could take the super charger out of a car, and turn it
>>> with one of the model jet engines. I'm not sure if you would be able
>>> to
>>> hear the turbines over the engine or not.
>>>
>>> Good Luck,
>>>
>>> Roger (K8RI)
>>> .
>>>> Don W4DNR
>>>>
>>>>
>>>>
>>>>
>>>> Quoting Patrick<tpblogeditor@gmail.com>:
>>>>
>>>>> I've got a wild hair up my derriere about building something. I also
>>>>> want to> buy, find or whatever, the biggest loudest, 757 Airplane
>>>>> motor spooling up sounding blower motor that I can find for it. I
>>>>> WANT
>>>>> people to say stuff like, "Oh Lord A-Mighty --- He's turning the big
>>> iron
>>>>> on!" (or at least the big bulbs...)> -Chuck Adkins K8CPA
>>>>> http://www.politicalbyline.com
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>>>>
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>>
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