Ham Radio Amplifier

Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested

Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested

Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested

Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested

Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested

Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested   Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested

Penta 3-500Z RF Power Tube pulled from an Amp Supply LC500-NTC Amp and Tested on a HEATHKIT SB-221 HF Amplifier. Measured the following output power in solo service in the SB-221 amp with a Bird 43.

Drive was from an Icom IC-725 with 100Watts to the amplifier in CW mode. 80m: 680Watts CW 40m: 650Watts CW 20m: 600Watts CW 15m: 500Watts CW 10m: Amplifier not equipped for 10m. Guaranteed good and will not be DOA, but is not returnable as I have no control on what the tube may be used in or how it will be used. Checks must clear before shippping. The item "Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested" is in sale since Thursday, October 31, 2019. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "hamtest" and is located in Pikeville, North Carolina. This item can be shipped worldwide.
  • Frequency Band(s): HF
  • Model: SB-220 SB-221
  • Country/Region of Manufacture: United States
  • Max. Output Power: 700 W
  • Band: HF
  • Type: Linear Amplifier
  • Supported Modes: AM
  • MPN: 3-500Z
  • Brand: Penta Laboratories Inc.
    Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested   Penta 3-500Z Tube used in Heathkit SB-220 & Amp Supply HF Power Amp 650+W Tested