Millen 90651 Grid-dip Meter Test And Working

US $340

Essex Junction, Vermont, United States
Mar 14th

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Up for your consideration is this Millen Model 90651 Grid Dip Meter. It shows signs of age, but seems to be working as designed. I got it in an estate sale a few years ago, and never got around to using it. I tried to figure it out tonight, and have come to the conclusion that I just don't need it. When I finally realized that I could test it as a signal generator, I mated it up with a very accurate communications receiver (AOR AR8600). I put the radio in WFM, and installed the coils in the meter. I found that all of the coils opened up the radio almost exactly on frequency. The coils included are B thru F. The A and G coils are missing. You can seen in the chart below what frequency ranges are covered by the coils. There is one odd coil included which I think is the coil log. I do not know what it does. I do not have the manual for the meter, but I found one on-line at www.mods.dk that I will email to the winning bidder. Here are some of the applications for this meter: Receiver Tuned Circuits Transmitter Tuned Circuits Neutralization Parasitic Oscillations Parallel Resonant Traps Series Resonant Traps R.F. Chokes Measure Circuit Q Relative Q at given frequency Measurement of Capacitance Measurement of Inductance of R.F. Coils Relative Q of Capacitors or Inductors Antennas Tuned Resonant Feeders, as used in Zepp Antenna Untuned or Non-resonant Feeders Tuning the Parasitic Beam Quarter-Wave Shorted Lines Quarter-wave Open Lines Half-wave Shorted Lines Half-Wave Open Lines Check Standing Waves Relative Field-strength Meter Here are the ranges of the coils: Band Start Mc Stop Mc Color A 1.7 4.5 Brown B 2.9 7.5 Red C 6.4 16 Orange D 13 32 Yellow E 25 60 Green F 60 150 Blue G 140 300 Violet Coil Log 0 10 - Have you heard the eBay Song by Weird Al Yankovic? Wanna listen to it while you read my listing? Crank up the volume, click on the "Play" button, sit back......... and ENJOY!!!! This item appears to be operating as designed, but due to it's age, and my limited testing, it is being offered AS-IS with no returns. Payment is expected within 24 hours of the auction closing. Good Luck & Happy Bidding!!

“This meter cabinet has a call sign painted on it. The clear plastic on the rear of the unit has cracks in it. The A and the G coils are missing.”