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Reviews Categories | Amplifiers: RF Power - HF & HF+6M | Heathkit HA-14 Help

Reviews Summary for Heathkit HA-14
Heathkit HA-14 Reviews: 11 Average rating: 4.6/5 MSRP: $99.95 & Abt $60.00 P.S.
Description: Heathkit HA-14 SSB Mobile Linear Amplifier
Product is not in production.
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W6THW Rating: 5/5 Jan 19, 2002 23:36 Send this review to a friend
Great tube Mobile Amplifier  Time owned: more than 12 months
Heathkit HA-14 SSB Linear Amplifier

The amplifier is 12-13/16" wide x 3-3/16" high x 10" deep.
Band Coverage is 80, 40, 20, 15, and 10 meters.
Power input SSB: 1000 watts P.E.P.
Driving power up 100 watts for full output.
Output Impedance 50 ohms unbalanced, SWR not to exceed 2:1.
Input Impedance 52 ohms unbalanced; broad-band pretuned input (circuit requires no tuning)
Meter Functions Relative power and 1:1 to 3:1 SWR.
Front Panel Controls Tune: 80, 40, 20, 15, and 10 meters.
Band 80, 40, 20, 15, and 10 meters.
Relative Power Sensitivity control.
Meter switch: FWD And SWR.
Power switch: OFF, ON.
Tube Complement Two 572-B (or two T160-L) in parallel.
Power Requirements 2000 volts DC at 500 ma and -120 volts DC at 60 ma, an 12.6 Volts Dc at 4 amperes.
Net Weight 7 Lbs.

Now lets get to how well it operates, In the real world, it will run 500 watts output useing a Bird model 43 watt meter. I have only checked it on
80, 40, and 20 meters, but i am sure it will be a little less on 15, and 10 meters. There is no standby position so you can not use your exciter
barefoot unless you turn it off. Also i would use a small 12 volt muffin fan above the 572-b tubes to keep them cool. (There is no internal fan).
As you can see with no fan it is very quite. I am useing brand new Taylor matched 572-b tubes.
The original tubes Heathkit used in this model was Cetron 572-B/T160L.

To operate the HA-14 mobile amplifier you set the band switch to the disired band, do not turn it on. Load the exciter in a normal manner at the
desired frequency. The FWD and SWR functions of the Amplifier meter can be used in loading the exciter. Reduce the drive level of the exciter to a
minimum. Turn on the HA-14 Amplifier and apply a small amount of RF from the exciter. Peak the tune control for maximum REL PWR on the HA-14 Amplifier meter.

The reason i went through the tune up is to show that you only use two knobs, band switch and tune control. The matching AC supply is the HP-24
and the matching DC supply is the HP-14.

I have used it mobile and except for replaceing the tubes (30 years old original tubes) i have had no troubles with the HA-14 amplifier or the DC and AC power supplies. If you
can find one it is still one of the best tube amps for mobile going. I am also useing the HA-14 with my Ten Tec Corsair II at home. (not for sale)

Mike (W6THW)
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