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: TS-930SAT S-Meter Lamp(s)  (Read 1003 times)
W4BCD
Member

Posts: 7




Ignore
« on: May 01, 2007, 07:18:17 PM »

Both S-Meter lamps on my 930 are burned out. I read that a 12V lamp from Radio Shack would work as a replacement. I tried that and they worked for a short time but also burned out. The voltage across the leads supplying power to the lamps measures 28.8VDC with a Fluke DMM. Does this sound correct? If so, can anyone suggest a source for a
replacement lamp? Help ! ! ! Thanks
Logged
KB9CRY
Member

Posts: 4283


WWW

Ignore
« Reply #1 on: May 01, 2007, 07:40:50 PM »

Go with an LED with dropping resistor.  They'll last forever.
Logged
KC8VWM
Member

Posts: 3121




Ignore
« Reply #2 on: May 01, 2007, 08:43:09 PM »

28.8 vdc is not a "typical" voltage for meter lamps.

However, you might find a 12vdc source inside the rig and follow KB9CRY's suggestion.

In addition to lasting almost forever, using LED's to replace lamps inside your radio reduces draw on the power supply and reduces lamp heat from building up inside the radio.

73 de Charles - KC8VWM
 
Logged
W4DRR
Member

Posts: 82




Ignore
« Reply #3 on: May 02, 2007, 05:52:35 AM »

Actually, 28V is a very typical lamp voltage.  Usually only in Military/Aviation equipment though.

Bob  
Logged

73,
Bob
AC5E
Member

Posts: 3585




Ignore
« Reply #4 on: May 02, 2007, 09:25:37 AM »

There are plenty of 28V bulbs around. The problem is the base! They come in miniature bayonet similar to the #47, slide in, miniature screw base, and a dizzying number of alternatives.

I could probably dig up a Chicago Miniature Lamp catalog and give you some numbers - but what sort of base do they have?

73  Pete Allen  AC5E
Logged
KA6OTJ
Member

Posts: 18




Ignore
« Reply #5 on: May 02, 2007, 10:33:25 AM »

The 12v radio shack lights work fine.  The old number for the bulbs was rs272-1141.  What you need to do is put the 2 bulbs in series with a 640ohm half watt resister and they will out last the radio.  At least that was my experience.  Once I did that I never changed them again.
Logged
N6AJR
Member

Posts: 9910




Ignore
« Reply #6 on: May 02, 2007, 01:37:41 PM »

http://www.kenselectronics.com/lists/lites.htm

they have a ton of bulbs
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!