Posts Tagged ‘mmr40’

Field Day 2010 Operations

Conditions were generally not as good this year as last.  We found that the settings for the antenna tuner that we made last year were still completely valid.  The only problem we had was when we had the 160 meter switch turned on for 80 meters at one point, which may have led to some […]

Leave a Comment

MMR40 – Finished… For now

Ok, I’ve spent enough time on this one project.  Once again, I couldn’t make it perfect (and that drives me crazy)… but it’s time to call it finished. The final touches involved a little chassis work.  A few coats of paint (but I was too lazy to fix the existing scratches in the top of […]

Comments (3)

MMR40 Front Panel (Cont’)

I found a piece of red acetate for the Digital Dial Display.  It was the tab on a notebook with dividers that I picked up at Target. After gluing this in place over the display hole, I applied glue to the faceplate and the laminated photo cover.  First, I tried Gorilla Glue, thinking that it […]

Leave a Comment

MMR40 Front Panel

I used Visio to create a front panel image for the MMR-40.  I did a rough drawing first with the holes in the approximately correct places, then printed it several times on my laser printer.  By making slight adjustments each time, I ended up with a panel overlay that should fit pretty good (With 4 […]

Leave a Comment

MMR40 S-Meter / Power Meter Circuit

There is a simple S-meter/Power-meter circuit in the SPRAT Newsletter issue # 57 by Bill Bartlett, G4KIH. It derives its S-meter component from the audio stages, and gets its Power indication from a simple RF probe. To adapt this circuit to the MMR-40 took a little engineering, but it wasn’t too bad.

Comments (3)