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

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Yaesu FT-1500 Tone Encoder Problem  (Read 884 times)
N4LRA
Member

Posts: 4




Ignore
« on: February 20, 2001, 09:16:23 PM »

The Yaesu FT-1500 appears to have a problem with the tone encoder malfunctioning when the DC voltage to the radio reaches 14.2 volts.

I and two other hams that I know who own this radio have experienced this problem. The reports we received were that the radio dropping out of the repeater.

I discovered that when I turned the engine off, the problem went away. When the engine was running, the problem would reappear. I monitored the voltage and saw that my normal charge voltage was at 14.2 volts. The radio appeared to work OK until the voltage hit this number, then I would get reports that it was dropping out. The rig was still transmitting full power, but the sub-audible tone was disappearing at 14.2 volts.

Most late model vehicles charge the battery with a voltage of 14.2 volts and not the 13.8 volts used in years past.

WA3CVB told me tonight that he has resolved this radio cut out problem.

He bought a full wave rectifier at Radio Shack and used one of the heavy duty diodes in series with his power cable. This drops the dc voltage to the radio about one volt. This radio appears to work fine at this lower voltage.

73 to all.

Bill
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!