Warning: Creating default object from empty value in /homepages/11/d132647312/htdocs/Amfone/mkportal/include/SMF/smf_out.php on line 47
Watt Meter Replacement Diodes




 
The AM Forum
June 30, 2022, 09:18:18 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Calendar Links Staff List Gallery Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Watt Meter Replacement Diodes  (Read 2548 times)
0 Members and 1 Guest are viewing this topic.
W8UJX
Member

Offline Offline

Posts: 90


WWW
« on: December 19, 2012, 07:20:32 PM »

I have a Yaesu YS-500 SWR/Watt meter.  The meter covers 140 to 525 MHz.  The diodes in the RF pickup section are burned out.  The schematic only shows a block for this section and does not give a part number for the diode.

Does anyone have a sugestion for replacement diodes?

Thanks,
Jerry, W8UJX since 1954
Logged
KM1H
Contributing
Member
*
Offline Offline

Posts: 3519



« Reply #1 on: December 19, 2012, 09:00:59 PM »

Likely a matched pair of germanium similar to the 1N60, 1N191, 1N270, etc. A pair of modern Schottky should work and they will have zero leakage and be well matched, 1N5711 is a common one I use everywhere in place of germanium.

Carl
Logged
Steve - K4HX
Administrator
Member

Offline Offline

Posts: 2723



« Reply #2 on: December 19, 2012, 09:02:40 PM »

Did you call Yaesu repair? The diodes in the YS2000 are 1N60s.
Logged
W8UJX
Member

Offline Offline

Posts: 90


WWW
« Reply #3 on: December 19, 2012, 10:13:31 PM »

Why didn't I think about calling Yaesu...  I will give the 1N5711 a try and if that doesn't work I will  give Yaesu a call.

I need to order some diodes that I can use in broken watt meters and other RF projects.  The 1N5711 looks like a good candidate.

Thanks,
Jerry
Logged
Steve - K4HX
Administrator
Member

Offline Offline

Posts: 2723



« Reply #4 on: December 19, 2012, 10:53:49 PM »

I haven't called them recently but in the past they were very helpful. I was asking for info and parts on much older radios, FT101 and FT102.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
 AMfone 2001-2015
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Page created in 0.062 seconds with 19 queries.