eHam.net - Amateur Radio (Ham Radio) Community

Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net


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.
More info: http://www.qsl.net/w6ovp/
Email Subscription
You are not subscribed to this review.

Subscribe!
My Subscriptions
Subscriptions Help

You can write your own review of the Heathkit HA-14.

<— Page 2 of 2

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)
 
<— Page 2 of 2


If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.