Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested

Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested

Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested

Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested

Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested

Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested

Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested    Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested

Ameritron AL-811H HF 800w Amplifier. Refurbished and updated by me. The case isn't a'10' but don't just judge a book by its cover! A set of tested, matched. Added HV slow-blow fuse in HV lead, plus spare fuse. Replaced main fuse holders with circuit breakers. Removed grid chokes from tube sockets and directly grounded the grids.

Added 2 150v Gas Discharge tubes from each filament lead to ground. Installed 270-ohm 35w load resistor across input. Checked each HV capacitor and equalizing resistor... Installed grid idle current diode mod.

Replaced anode ceramic caps where necessary. Changed solid-wire anode choke leads to flex wire. Replaced meter lamps with LED's.
Replaced insulated RF output wire with coax. Relocated output RF choke closer to ground. Replaced tubes to get best matched set. Tested key-down into dummy load for 3-minutes at 400w continuous carrier on 14MHz. If box is damaged, then take photos before opening to check content.

Contact shipper and me so a claim can be initiated. The item "Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested" is in sale since Monday, February 11, 2019. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers".

The seller is "radio-ks4aa" and is located in Vernon Hill, Virginia. This item can be shipped worldwide.
  • Brand: Ameritron
  • Model: AL-811H
  • Max. Output Power: 800w PEP
  • Band: HF
  • Supported Modes: CW
  • Modified Item: Yes
  • Modification Description: see description.
  • Country/Region of Manufacture: United States
  • California Prop 65 Warning: California is very much over-zealous with their warning label requirements!
    Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested    Ameritron AL-811H Amp Refurbished-Updated NOS Tubes Tested