AMERITRON AL-811H Manuale d'uso

Sfoglia online o scarica il pdf Manuale d'uso per Amplificatore AMERITRON AL-811H. AMERITRON AL-811H 19. Hf power linear amplifier
Anche per AMERITRON AL-811H: Manuale di istruzioni (12 pagine), Istruzioni per il disimballaggio Manuale (11 pagine), Manuale (13 pagine)

Upgrade Kit AL811 and AL811H amplifier

Thank you for purchasing this kit (and/or modification manual). These kits and this technical manual are intended

to help fellow Hams understand potential failures. This technical instruction manual and these l kits allow

individuals to bring 811 series amplifiers up to latest revisions. Please order via email links on

www.ctrengineeringinc.com

https://

/ameritron-811-811h-upgrade-kits/

or email order query only to [email protected]

This modification manual is also the result of feedback, questions, and suggestions by fellow Hams. More

suggestions are always welcome. The overriding philosophy is everything reasonably possible should be done to

prevent expensive or annoying damage, especially to expensive radios. An amplifier should work as well as possible

for the cost.

If you use this instruction manual without intention of making your own kit, please PayPal a payment gift of $10 to

These kits comes in two basic forms with one add-on:

(Power Supply rebuild) 811KS

1.) four better sized higher-voltage much longer-life 5000 hours 105c rated electrolytics

2.) four improved bleeder/equalizer resistors

3.) one large 6A grid meter protection diode

4.) four meter multiplier resistors. These resistors also correct a slight meter error

(Protection Kit) 811KP

1.) three application tested GDT tubes

2.) one large 6A meter protection diode

3.) one 100k 2 watt resistor

4.) two 3.9V 5 watt Zener diodes

10-ohm 9-watt CCS 10kV rated fault resistor

5.)

Add on part:

811R200K

200-ohm 25-watt non-inductive load resistor kit with hardware

share things, but please remember we have several weeks' labor composing this document. Please consider a

PayPal gift to

when using these instructions if you do your own kit.

Overview

I designed the AL811 series many years ago. It was intended to be a minimal cost reasonable power level SSB and

CW only amplifier. The initial design request was for just two tubes, but that obviously would have been

inadequate. As a result I added a third tube as a bare minimum cost amplifier, and pushed to have a better but still

not too expensive four-tube amplifier. The better version became the AL811H.

This instruction manual and the 811 kits are the result of direct feedback from servicing several dozens of

amplifiers. Read these instructions thoroughly before you start working on your amp. Make sure you understand

every step in order to avoid any trouble.

AL811

The three-tube 811 model is not neutralized. As with two unneutralized 572B tubes, three 811A tubes are