I have been working on GLA1000, plain vanilla (no suffix). It had been unused for at least 15 years and in original unmolested condition apart from the 10m mod. There appears to be 1 or 2 versions of the original design. This one had an 8v zener permanently wired from cathode to ground for setting the bias although the relay had a set of unused changeover contacts. I have added a 50k resistor and switched the diode in on tx only using the spare contacts. It has 4 Dentron branded D50 tubes which I am assuming are original and just a branded sweep tube? This version has all 3 grids grounded. I have recapped it and replaced the equalising resistors which were way long. Here's what I get: Around 1100v on the meter no load Approximately 50ma key down idle current. It's difficult to be accurate as the plate current meter increment is 100ma but it's about half way to 1 division If I drive it with 85w of carrier from the HT-44 I get 500w out on 80m and around 450 on 1om when tuned using a dummy load. The plate voltage drops to around 875v and the current is around 1 amp. The numbers in the manual are 800v at 1.25 amps for 1kw in. Am I in the ballpark here?