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Your world-wide source for Heathkit, Drake, Collins and Dentron amplifier parts & upgrade kits

How retrofit the MLA-2500 with the Russian GI-7B tube to replace the 8875's which are both expensive and hard to come by tubes by W4EMF

Dentron GLA-1000 Conversion, modification with 4 x PL/EL-519 or 2 x GI-7B

Article on the Dentron MT-3000A antenna tuner and some good modifications by W1AN

This retrofit of a GLA-1000 to GI-7B was done by Lawson, W4EMF, in 2002. Modifying The Dentron GLA-1000B for the GI-7B Triode

Your World-Wide Source For Amateur Radio Amplifier Parts & Upgrade Kits for Collins, Dentron, Drake, Heathkit, Kenwood, Swan W8ZR, Yaesu Products