RKR Designs LLC
The ALPHA brand originated at Ehrhorn Technological Operations (ETO) in 1971. Over the years the ALPHA division has been owned by a variety of different interests, while persistently maintain a reputation for powerful, durable, high performance amateur radio amplifiers.
- 844-73-4-HAMS
303-716-7728 - 719-428-1919
- service@alpharfsystems.com
- 634 South Sunset St.
Longmont, Colorado 80501
United States
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product
Wattmeters
Wattmeter with 160M to 6M Coverage Our Wattmeters can measure from 200 milliwatts to 5 kilowatts, from 160 meters to 6 meters with no slugs.
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Amplifiers
Fully automatic, legal limit plus headroom amplifierAlpha’s low-drive, tube amplifier design delivers the cleanest possible signalOperates on all Amateur Radio Bands 160M thru 10MSingle, easy to find, inexpensive 3CX1500A7 8877 type tubeInternal, automatic 4 port antenna switch capable of combining any 2 antenna portsAlpha’s Legendary service and support4 year limited warranty on hardware, 1 year on tube1500W, 100% duty cycle, no time limitation, key down foreverRugged construction built to last
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Automatic Antenna Tuner
Automatic Antenna Tuner has not been released for full Beta testing and production yet as we are solving some firmware issues. We cannot give you a date nor estimate at this time when full production will commence.
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Dummy Load
Dummy load is capable of dissipating four times the legal limit 6 kW for 2 minutes and legal limit 1500 watts key down, forever. It covers the 160 meter to 6 meter bands (actually 1 Mhz-60 MHz continuously). It is a dry dummy load intended for testing amplifiers and station conditions. Two fans on the rear of the unit are automatically turned on when the internal temperature reaches 120°F/49°C . The unit runs off a universal AC supply. Simple to operate and use, the dummy load includes an RF sample output of -60 dBc.
