Re: Drake L-7
开云体育Why do you want to see these tubes all the time? ? It is the most reliable amp I’ve had. You can push this amp to all its limits and beyond, it just won’t die. Even when it starts to stink like burning socks. ? I used 2x 3-500ZG, for hours and hours, daily, for 15 years. ? The only thing I changed was the RF-choke and a replacement for the green pcb like 160m capacitor (by door knob types). I only opened it once a year to remove the just. That was all. Use it, push it, don’t worry about the colour of the tubes. Just stay within the current limits and you will be fine. (make sure the ventilation is running . ?) ? Great amp. ? 73, Evert ? / / ? From: [email protected] <[email protected]> On Behalf Of Fran?ois via groups.io
Sent: Saturday, 25 January 2025 17:30 To: [email protected] Subject: Re: [ham-amplifiers] Drake L-7 ? The top sheet metal is a solid sheet metal. You can see, very badly, through the fan. ? Removing the top panel: ok. To do a short test, it is a solution but in operation it is not reasonable, if only because it strongly modifies the path of the ventilation (airing). Without the cover, the air no longer comes from above by licking the filament seals and Eimac recommends. ? Maybe some have cut a small window blocked by a sieve and a plexiglass plate ? Eimac Technical data ? ? -- F1AMM Fran?ois |