1500 watts RMS amplifier for 1.8 to 30 MHz HF linear 50v LDMOS BLF188XR Ham
Contact info at the bottom. Proudly made in the USA with local, imported parts and original Ampleon transistors.
Design change: This amplifier now comes with a bigger enclosure with 2 fans, video here. Second hand power supply ready with amplifier. I'm building quad or single LDMOS transistor amplifiers, also I'm building another LDMOS amplifier with 500 watts RMS.I can build any of them per your requirements. I can sell you a power supply ready for the amplifier for an extra cost. 1500 watts RMS (or Average or Bird watts), 2000+ watts PEP, 2x BLF188XR, front gain control and SSB switch, internal relay to turn off bias when stand by to reduce heating. 8 watts RMS max input (default is 8 watts but I can adjust this to any requirement, example 100, 50, 25 watts, etc) RF sensing for TX.
For reference, on 28 MHz with 4 watts RMS of input it will make 800 watts RMS, with 15 watts PEP of input it will make 1400 watts PEP. Another test at 14 MHz with 8 watts RMS of input, it will make 1500 watts RMS. Amplifier approximate case measurements: 12 7/8" x 9 1/4" x 5 1/4 not counting the front switches, cables or back connectors.All measurements are done using Bird 43 wattmeters, RMS readings are measured with dead key with the PEP kit turned off, PEP readings are measured modulated and the PEP kit turned on. We measured the harmonics using a Bird Signal Hawk spectrum analyzer. Other measurements are done with a Fluke scopemeter/oscilloscope. All wattage measurements are off the air using a CDI 50 ohms 10kw terminating load (dummy load). 1st Bird 43 at the left measuring the radio power, PEP kit off, 1x multiplier with a 50 watts slug, 50 scale in the meter. 2nd Bird 43 at the center measuring the amplifier power in RMS or Bird watts, PEP kit off, 5x multiplier with a 1kw slug, 50 scale in the meter. 3rd Bird 43 at the right measuring the amplifier RMS power, PEP kit off, 1x multiplier with a 5kw slug, 50 scale in the meter. Good ventilation, cool room temperature, 50 volts power supply with 50 amperes, ammeter and 12 volts power supply are required to operate this amplifier. You fail to do this, the amplifier dies, you decide.
BLF188XR transistor is RUGGED, but that doesn't mean it will not fail, you can literally cut the antenna cable and it will not die, but you go more than 45 amperes (this amplifier with 2 BLF188XR), you will have shooting stars, please don't try cutting the antenna cable..... DO NOT OVERDRIVE THE AMPLIFIER. As a reminder, please don't overdrive the amplifier. Don't forget to use a Low Pass Filter on Ham radio bands, don't forget to NOT OVERDRIVE THE AMPLIFIER and the good ventilation with cool room temperature is very important, if you left your amplifier to melt itself like a Chernobyl reactor it's your fault, you been warned.Please make sure you follow all FCC rules, this amplifier is not intended to be used on Citizen Band (CB), to be used without a low pass filter in the Ham bands(160-6 meters), to use it with more than 1500 watts in the HAM bands or to use it in digital mode. The power output of this amplifier will vary depending your radio, antenna, frequency, coax, SWR and any other circumstances. I will continue to improve the amplifier so maybe the pictures are outdated. The item "1500 watts RMS amplifier for 1.8 to 30 MHz HF linear 50v LDMOS BLF188XR Ham" is in sale since Tuesday, July 21, 2020. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers".turbo" and is located in Boynton Beach, Florida.
- Model: 2 caplets
- Country/Region of Manufacture: United States
- Custom Bundle: No
- Band: HF
- Type: Linear Amplifier
- Supported Modes: AM
- Year Manufactured: 2020
- Power: 1500 watts RMS
- Brand: vijovame
- Manufacturer Warranty: None