[Test-Equipment] WTB Millen GDO 46706 LF coil

[Richard Knoppow]

     I never knew this coil existed, never seen it advertised. Is the 
hcalibration chart anywhere on the web?  Charts for the other extension 
coils are in the little handbook at BAMA (and elsewhere).  I have one of 
these GDO but not the extension coils. Have to look again. The Millen 
GDO will test crystals, which some can't do.

On 3/28/2026 10:53 AM, Dale H. Cook via Test-Equipment wrote:
> Doug Hensley's post about his Millen GDO prompted me to post here about 
> mine.
> 
> I own a vintage Millen Type 90651 GDO. Some years ago I purchases the 
> first four LF coils for it (46702, 46703, 46704, 46705). Millen sold 
> them individually and as a set, and they are not difficult to find. They 
> later introduced a fifth LF coil, the 46706, covering 165 - 225 kHz, and 
> I have not yet found one. I have had a search running on the auction 
> site for years with no hits. There were apparently fairly few of them 
> made. If any of you have a Millen 46706 LF coil to part with I am 
> interested in buying it.

-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998