It may be so, but somehow I get orders from the Western ham willing to
buy GS-23B...
There is a factory in Ukraine (I am from Ukraine :-) ), but it has not
been manufcturing tube for quite a while. Instead they buy (!?) tubes from
independent suppliers in UKraine and offer them at... the US prices !!
I was personally in contact with them and found that the Polyaron
factory in Lviv has no common sence in their price policy. So, I just wasted
my time !
In any case if a person asking for a tube probably intends to make
something out of it bearing in mind he can save a lot on a homebrew project.
The rest buy complete commercial sets and when something goes wrong with the
unit they just bring it to the repair shop.
If one can make a PA by yourslef why one should spend say $700+ on a
tube if one can buy the tube with the same parameters but having the
Cyrilic letters insted of the Latin ones :-)
That is why I am running my small business (including TUBES).
Regards, Anton Koval, UT7CT
----------------------------------------------
UT7CT Ham Radio Devices - Fine range of CT
Hand Keys & Paddles. Collectable keys. Svetlana
PA tubes and much more at http://www.qsl.net/ut7ct
tony@uch.net ICQ#19487420
-----éÓÈÏÄÎÏÅ ÓÏÏÂÝÅÎÉÅ-----
ïÔ: Ian White, G3SEK <G3SEK@ifwtech.demon.co.uk>
ëÏÍÕ: amps@contesting.com <amps@contesting.com>
äÁÔÁ: 27 ÆÅ×ÒÁÌÑ 2000 Ç. 16:33
ôÅÍÁ: Re: [AMPS] 4CX800's vs 4CX1600
>
>UT7CT --> Anton Koval wrote:
>>
>> The 4CX800A (GU-74B) tube is rated at about 800 W, the 4CX1600
(GS-23B)
>>is rated at 1600 - 2000 W and works well over 1000 mHz.
>
>The 4CX1600B (pin base) and the 4CX1600U (GS23B, coaxial base) are NOT
>two versions of the same tube - they are completely different tubes,
>with different electrical characteristics.
>
>The anode dissipation just happens to be the same, which gives them the
>same "4CX1600" root name under the regular naming system.
>
>The -B is a standard Svetlana product, made in their St Petersburg
>factory and available in the USA.
>
>The -U is not even a Svetlana tube. It is made at an independent factory
>in the Ukraine. Svetlana were intending to market it, and got as far as
>an interim data sheet, but backed off because of difficulties in
>guaranteeing supplies in commercial quantities. For amateur quantities,
>the well-known sources in the Ukraine seem very reliable.
>
>
>73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
> 'In Practice' columnist for RadCom (RSGB)
> http://www.ifwtech.demon.co.uk/g3sek
>
>--
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>
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