Ameritron AL-811 600W HF Linear Amplifier (Be SURE to READ the DESCRIPTION.)
Ameritron AL-811 HF Linear Amplifier with a trio of good quality USA made (reinforced/ribbed plate) 811A Tubes. Included with the Unit is a spiral-bound Print of the Ameritron AL-811 Operating Manual. Also pictured and included is a BUD-Box version of the Ameritron ARB-704. The BUD-Box contains a Transistorized PTT Circuit (and a pair of RCA Plug interconnecting Cables) to allow modern Transceivers to key the AL-811 PTT "Relay" RCA Jack.
The Circuit of the BUD-Box is similar to the Yaesu FRB-757 which'borrows' +12Vdc [at 100mAdc when keyed] from a Yaesu-type Transceiver ex. FT-757GX series "+13.8V" Jack thereby allowing the same Transceiver's "PTT" Output - sinking only 2.5mAdc.To key a mechanical Relay in the BUD-Box which then keys 100mAdc at the Ameritron. +12Vdc can also be supplied directly to the center RCA Jack if your rig doesn't supply it. Previously, the AL-811 was Circuit Modified / improved: + LEDs (2 backlighting each meter) internally illuminate the pair of front Panel Meters + Plate Tank Coil (originally thermoplastic) was replaced with a heavy-duty (military grade) Ceramic Tank Coil + Circuit protections added include: ---A pair of Gas Discharge Devices (to protect Driver/Exciter in event of any 811A failures) ---A pair of 200-Ohm hi-Wattage / Heat-Sunk Resistors capacitively coupled to input (for stability) ---A metal film hi-Wattage DC bias Resistor Network (to cut-off Ip during standby).
This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia.
- Brand: Ameritron
- Supported Modes: AM
- Model: AL-811
- Amplifier Class: AB2
- Frequency Band(s): HF