[AMRadio] Mod Monitor

[Jay Bromley]

Hi Bob,
I haven't used the Johnson match box before for an RF pickup, but I am sure
it is doable!  Here are a few ideas that work that are easy to build inside
if you wish.
http://www.k8iqy.com/testequipment/-20dbmcoupler/-20dbmcoupler.htm

IF using high power, just get the center from an piece of RG-213.  Last time
I looked up the center dielectric is good for 6500 volts.  This is the
non-foam stuff.  

Another one I found was here:  http://www.qsl.net/n2ffl/AM.html  

Nothing critical here if you like to play and roll your own.

There are some nice ones from Precise RF.
http://preciserf.com/shop/station-monitor-trapezoid-qrp/  The nice thing he
provides a trigger so the display is stopped.  If you look in the data
sheets you will see a nice schematic that may give you a few ideas.  Someday
hope to buy one to clean up some of the homebrew boxes here, hi.

73 de w5jay/jay..





-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Bob, W4WSZ
Sent: Tuesday, August 27, 2013 8:08 AM
To: AMRadio at mailman.qth.net
Subject: [AMRadio] Mod Monitor

On the Johnson Match Box.there is a provision for a probe........has anyone
used this for a means of rf pickup to drive a modulation monitor........if
so, what did you use inside for the pickup.?

Thanks
de Bob