Skip, also consider including the Amp Supply LA-1000 and the Ameritron
AL-84 in your conversion writeup. All three amps are virtual clones and
it may improve your chances of an article acceptance.
Tnx for info on the EL-509. Who is carrying them? Might keep a lot of
CBers happy also!
73....Carl KM1H
On Sun, 17 Aug 1997 11:33:29 EDT nospam4me@juno.com (Skip S Isaham)
writes:
>Hello to all,
>
>In the course of helping a past request for the maual and circuit
>diagram for the Dentron GLA-1000, I've stirred up quite a nice small
>following of folks with this amplifier in various states of
>condition/operation.
>
>One of my past posts mentioned the lack of replacement sweep tubes at
>a realistic price, some serious design flaws with the GLA-1000x and
>that I at one time set about to author an article for QST with the
>various improvements possible. Since the amplifier fell out of
>popularity with amateur community, I never completed the article but
>did complete the modifications to my own amplifier.
>
>I have received renewed requests for the "update" information I once
>wrote, a nice quad set of Svetlana EL-509 sweep tubes which should
>"retrofit" quite nicely and have two "virgin" GLA-1000B amplifiers in
>original condition.
>
>I will once again start the "update mods" and tube retrofit using one
>of the two amplifiers with a QST ariticle as the eventual goal. I
>would like to throw out a request to have anyone with practical
>thoughts/ideas for the Dentron GLA-1000x circuit to please offer their
>opinions and ideas.
>
>As I update different sections of the amplifier, I'll be posting the
>various short problems related and would hope to have your thoughts.
>These would include:
>
>Better efficiency above 21MHz
>Installation of a standby mode, current cuttoff/reduction circuit.
>Reducing the VHF gain/ parasitic reduction, design of suppressor
>circuit(s).
>Conversion from the original 6JE6/6LQ6 to the Svetlana EL-509
>considerations.
>Any other related issues.
>
>I have copies avail of the GLA-1000 circuit and the EL-509 information
>is on the Svetlana web page. I'll try and keep this short and simple.
>I would hope to minimize any errors before the submission of the
>article to the ARRL. Thanks to those who have already offered to help
>with the project.
>
>Cheers
>Skip May wv6f
>nospam4me@juno.com
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