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 | Transceivers: HF Amateur (inc. HF+6M+VHF models) | Sugiyama F850 Help


Reviews Summary for Sugiyama F850
Sugiyama F850 Reviews: 3 Average rating: 1.3/5 MSRP: $900
Description: 10W for 160-80-40-20-15-10-6-2m. Radio button design, 500kHz VFO range, digital, GBP 900,-.
Product is in production.
More info: http://www.qsl.net/oe4whg/sugiyama.htm
Email Subscription
You are not subscribed to this review.

Subscribe!
My Subscriptions
Subscriptions Help

You can write your own review of the Sugiyama F850.

DH5AK Rating: 0/5 Jun 29, 2009 14:00 Send this review to a friend
2m-PA not relyable as well!  Time owned: more than 12 months
I want to add that the 2m amplifier of my F850 was not relyable too. It ate several RF power transistors. Although the circuit itself seemed to be quite simple, the RF power transistor is rare AND expencive. You do not need to open the F850, Panodoras monster is leaking even through the solid cabinet walls!
You should never buy this radio or you should love never ending frustration.
 
DD3LY Rating: 0/5 Aug 25, 2006 04:13 Send this review to a friend
Bad  Time owned: 3 to 6 months
The case is robust, the circuit design of the shortwave range seems to be a good structure, the frontend is "high performance", BUT:

All functions of this radio are controlled by mechanical switches which are absolutely NOT relyable. All of these radios have massive problems with these switches. I tried to clean the switches with a special solvent but it was very high effort to reach them all. Frustration is preprogrammed with this radio if you do not disassemble it completely and exchange these switches for better types. I did not try to spend this effort.

Maybe there are other problems too. I gave up and sold the radio cheap. The new owner knew about these problems. He even discovered a problem with the 2m power amplifier.

I honestly can't recommend to buy this radio. High performance circuit design is just one factor, life length and the MTBF is another which is important too.
 
DL0USB Rating: 4/5 Oct 3, 2003 16:36 Send this review to a friend
A bit too unreliable  Time owned: more than 12 months
Was offered using most sophisticated receiver mixing technology ...

Using 4 J-FETs in the front end made this rig famous ... but:

Dynamic range on SW was really fine. 6m receiver sensitivity was not so good, 2m sensitivity was bad.

Many of the radio buttons (500kHz segments or band switches, mode switches etc.) failed after a while. PCB interconnections were also bad and so, several unwanted signals were produced during transmit. Worst signal on 2m in the EU FM band (145-146) produced large ghost signals in the SSB/CW area ...

It was hard to get the right AMP connectors for the rear panel (the big band and mode matrix). I guess that order took more than a year.

So, except for 2m it was well usable as a QRP rig with pretty good receiption.
 


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