[K3CAL] [Norton AntiSpam]Re: Fwd: K7AGE just uploaded a video

[Rich Weaver]

I have a bunch of 1N34’s and I believe a 1N270 works well also.
You can get them on EBay all day long

From: N3AE 
Sent: Thursday, February 26, 2015 4:02 PM
To: Reflector, K3CAL 
Subject: [Norton AntiSpam]Re: [K3CAL] Fwd: K7AGE just uploaded a video

Probably the hardest part find is the 1N34 diode.  This is a germanium diode, not a silicon diode (difference is in forward voltage drop...0.3 volts vs.7 for a silicon diode).  Makes a difference in the sensitivity of the field strength meter. The 1N34 used to be a common part available at Radio Shack.  Now I think you may have to get it via mail order from any of the electronics housed like DigiKey, JAMECO, etc.

Sounds like a fun (and useful) project.
  


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From: "Jim Tetlow" <k3uga at comcast.net>
To: "k3cal" <k3cal at mailman.qth.net>
Sent: Thursday, February 26, 2015 8:04:58 AM
Subject: [K3CAL] Fwd: K7AGE just uploaded a video


Sorry, here we go again, this may be a fun project.........


Sent from my iPad, 73, 
Jim Tetlow
O!!!!!O
k3uga at comcast.net



Begin forwarded message:


  From: YouTube <noreply at youtube.com>
  Date: February 25, 2015 at 22:04:37 EST
  To: Jim Tetlow <jim.de.k3uga at gmail.com>
  Subject: K7AGE just uploaded a video


  K7AGE has uploaded Let's Build A Field Strength Meter I follow Richard's, KB3VZL,...    
             

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                                                                 K7AGE has uploaded Let's Build A Field Strength Meter 
                         
                            
                          
                               
                                Let's Build A Field Strength Meter  
                                 
                               
                                   K7AGE   
                               
                                 
                               
                                I follow Richard's, KB3VZL, February 2015 QST (page 71) article about building a field strength meter into a DVM. He built the circuit to fit inside a Harbor Freight digital volt meter. You can get these free at Harbor Freight if you have the right coupons. 


                                I also use my new ISO-TIP battery powered soldering iron.
                                http://www.iso-tip.com


                                Three capacitors, two diodes and a pot is all that is needed. Build this on a small perf board and it fits easily inside the meter.


                                Parts:
                                0.05 uF Cap
                                470 pF Cap
                                0.01 Cap
                                1N34 Diodes, you need 2
                                50K trim pot
                                hunk of perf board
                                switch
                                connector for antenna 
                                 
                               
                          
                   
             
                   
             
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