[K3CAL] Fwd: K7AGE just uploaded a video

[Chip Dahle]

This might be what you are looking for (1N34 substitute)

http://www.angelfire.com/electronic2/index1/In34a.html







On Feb 26, 2015, at 4:02 PM, N3AE wrote:

> 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.
>
>
> 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,...
>
>
> 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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Thanks
73
Chip 	K3AWD