[Boatanchors] Wanted - Cross-Needle Daiwa Type Meter

Michael D. Harmon mharmon at att.net
Mon Mar 23 23:04:17 EDT 2009


Hi Folks,

I've recently purchased a Johnson Kilowatt Matchbox into which someone 
has installed the meter and line section from (it looks like) an old 
Heathkit AM-2 SWR meter.  As most everyone knows, these meters measure 
relative power and relative SWR, subject to line section design, 
component tolerances, etc., rather than true forward/reflected power.

I would like to replace this meter and line section with a cross-needle 
type meter and true wattmeter line section like Daiwa and MFJ use in 
their wattmeters.  I have done some serious searching online, but I 
haven't found any cross-needle wattmeters which appear to be good 
candidates for cannibalizing the cross-needle meter and wattmeter unit.  
The meter movements in the Daiwa and MFJ wattmeters all appear to be 
integrated into the case of the unit.  I need to find a cross-needle 
meter I can remove from the wattmeter housing and install on the front 
panel of the Johnson Matchbox, and then install the line section in a 
shield box inside the Matchbox cabinet.  The Daiwa 620 and 720 meters 
appear to be the best choices based upon the way the meter movement 
appears to be attached to the wattmeter housing, although I haven't 
looked inside the housing to see what would be involved in removing the 
wattmeter/line section unit and installing it into a shield box.

Can anyone out there give me some tips as to which cross-needle 
wattmeter I should be looking for as a source for my scrounging 
activities?  If you have a wattmeter which looks like it would be 
relatively easy to remove the meter and the wattmeter section and 
transplant it into a Matchbox housing, let me know the make and model 
and I'll start watching for one to show up.

I suppose I could just remove the meter and line section from a cheap 
Heathkit wattmeter and install it in the Matchbox, but I love the 
cross-needle meter in my MFJ Differential-T transmatch and I'm spoiled.

Thanks!

Mike, WB0LDJ
mharmon at att dot net


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