- Amateur Radio (Ham Radio) Community

Call Search

New to Ham Radio?
My Profile

Friends Remembered
Survey Question

DX Cluster Spots

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

Reviews Categories | Power Supplies | Yaesu FP-757HD (Heathkit SBA-1400-4) Help

Reviews Summary for Yaesu FP-757HD (Heathkit SBA-1400-4)
Reviews: 2 Average rating: 5.0/5 MSRP: $(missing—add MSRP)
Description: Heavy Duty Design
Product is not in production.
More info: http://
Email Subscription
You are not subscribed to this review.

My Subscriptions
Subscriptions Help

You can write your own review of the Yaesu FP-757HD (Heathkit SBA-1400-4).

N5XJT Rating: 5/5 Mar 6, 2016 14:43 Send this review to a friend
Excellent Power Supply  Time owned: more than 12 months
Bought mine used about 3 years ago, the unit is at least 15-17 years old. It never overloads, no hash or noise of any type, I have drawn in excess of the 20 amp rating a number of times with no loss of regulation or issues. Speaker is front facing and provides good audio. Rear terminals provide 8 amps and are very useful for smaller DC powered items or a UHF/VHF rig. Cannot think of any negatives. It's a great unit, highly recommend it.
N8FVJ Rating: 5/5 Jun 9, 2015 09:28 Send this review to a friend
Heavy Duty  Time owned: 0 to 3 months
Used Astron was the standard when shopping for the best prices. Now-a-days vintage ICOM, Kenwood & Yaesu power supplies can be found in the same price range.

Enter the compact linear type Yaesu FP-757HD. The Heathkit SBA-1400-4 is the same power supply.

The FP-757HD is a fairly compact 13.8 volt @ 20 amp power supply measuring 9.5" wide x 10.75" deep x 4" high (including the feet). An oval internal speaker is included. The speaker has a good response for communications and provides hours of non-fatiguing use.

Being so compact at 4" high I was curious of the power transformer. The Astron RS-20 power transformer is 4.5" high. Yaesu used a Hypersil design. Older hams know of the compact, yet very powerful Peter Dahl Hypersil transformers.

The main power supply filter uses three 33.000uF @ 25 volt capacitors. The capacitors ripple current is approximately 20 amps continuous or more healthy vs the Astron RS-20. Yaesu uses four pass transistors vs two pass transistors on the Astron RS-20.

The FP-757HD conservative design is more like an Astron RS-35A and boosts a 30 minute full load rating. Likely the HD after the model number stands for heavy duty. A cooling fan will cycle on after a period of time then cycle off. The fan is reasonable noise wise. I have drawn above 20 amps from the P-757HD without any loss of regulation.

The power supply includes a cord & cinch type connector for direct connection to Yaesu transceivers of the period plus has two way DC binding posts on the rear panel. A front panel power switch (unlike ICOM power supplies) is included. The power supply has a 120 volt AC fuse on the rear panel and an internal fuse on the DC side to protect external equipment.

I recommend this quality power supply.

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