Ive no info on the Chinese tubes Roger, is there a good source in English?
Carl
KM1H
----- Original Message -----
From: "Roger" <sub1@rogerhalstead.com>
To: "Carl" <km1h@jeremy.mv.com>
Cc: <johndtate@post.com>; <amps@contesting.com>; "Alek Petkovic"
<vk6apk@bigpond.com>
Sent: Wednesday, February 17, 2010 9:52 PM
Subject: Re: [Amps] 4cx800a
>
>
> Carl wrote:
>> By available I meant from the manufacturer, uh...Russian military stores.
> That's why I called them "orphans".<:-))
> BTW, do you know the difference, if any, between an FU728B and FU728F?
>
> 73
>
> Roger (K8RI)
>>
>> Carl
>>
>>
>> ----- Original Message ----- From: "Roger" <sub1@rogerhalstead.com>
>> To: "Carl" <km1h@jeremy.mv.com>
>> Cc: <johndtate@post.com>; <amps@contesting.com>; "Alek Petkovic"
>> <vk6apk@bigpond.com>
>> Sent: Wednesday, February 17, 2010 8:41 PM
>> Subject: Re: [Amps] 4cx800a
>>
>>
>>>
>>>
>>> Carl wrote:
>>>> When was the last time the 4CX1600B was available...10-15 years ago??
>>>>
>>> They are currently available....Alpha is selling off what few they had
>>> at a fairly reasonable price... Oops...They had them two weeks ago, but
>>> they are no longer listed. Those were the last ones I knew of.
>>>
>>> As I said, they had a pretty good price...<:-)) Which is fine if you get
>>> a couple of spares which is always a good idea when building an amp that
>>> uses tubes that are orphans.
>>>
>>> 73
>>>
>>> Roger (K8RI)
>>>> Carl
>>>>
>>>>
>>>> ----- Original Message ----- From: "Alek Petkovic" <vk6apk@bigpond.com>
>>>> To: <johndtate@post.com>; <amps@contesting.com>
>>>> Sent: Wednesday, February 17, 2010 5:04 PM
>>>> Subject: Re: [Amps] 4cx800a
>>>>
>>>>
>>>>
>>>>> Ha ha. A production run of 4CX1600Bs would be real handy, sometime in
>>>>> the near future.
>>>>>
>>>>> Alek. VK6APK
>>>>>
>>>>> At 05:44 AM 18/02/2010, johndtate@post.com wrote:
>>>>>
>>>>>> Intersting thread. If you go to http://www.svetlana-tubes.com/ and
>>>>>> look at the site, they indicate the following ceramic tubes:
>>>>>>
>>>>>> 3CX400A7
>>>>>> 3CX800A7
>>>>>> 3CPX800A7
>>>>>> 4CX250B
>>>>>> 4CX250R
>>>>>> 4CX350A
>>>>>> 4CX400A
>>>>>> 4CX800A
>>>>>> 4CX1500A
>>>>>> 4CX1600B
>>>>>> 4X150A
>>>>>> 5CX1500A
>>>>>> 8560AS
>>>>>>
>>>>>> Whether they are still producing them or not I don't know but it
>>>>>> seems
>>>>>> to imply they do. For the heck of it I also looked at the glass
>>>>>> tubes
>>>>>> and they no longer list the 572B there anymore.
>>>>>>
>>>>>> 73, KX5JT John
>>>>>>
>>>>>>
>>>>>> _______________________________________________
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>>>>>>
>>>>> http://www.qrz.com/db/vk6apk
>>>>> http://www.qrz.com/db/vk6py
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>
>>
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