[R-390] Cosmos PTO end point coil

[Phil Atchley]

Hi.
Earlier I tried to set the end points on this unit.  I got it within 3 =
KC at
which point the slug dropped into the PTO. =20

SO, I bravely pulled the PTO and carefully opened it up.  I didn't =
observe
any unusual escape of nitrogen gas as I pulled the inner shield 8^)  =
Anyway,
I reinserted the slug, removed 1 turn from the end point coil (it had 3
turns) and reassembled the PTO.

NOW IT'S WORSE THAN EVER.  Best I get is within about 10KHz, that with =
the
slug turned fully anti-clockwise.  The 100 KHz markers are 1000 and 1990 =
KHz
at the ends indicating that exactly 10 turns of the tuning dial are =
tuning
further than 1MHz.  I only removed one turn but that appears to have =
been
too much.  HOW MANY TURNS DOES THIS COIL TYPICALLY HAVE IN A CORRECTLY =
SET
UP UNIT?  I wonder of someone previously removed turns?


Stoopid Cosmos PTO's!

73 de Phil, KO6BB

****************************************************
*  DXing THE WORLD WITH THE FOLLOWING EQUIPMENT.   *
*  RECEIVERS:                                      *
*    '67 EAC R-390/URR Surplus Receiver with a     *
*            HAMMARLUND HC-10 Sideband adapter.    *
*    YAESU VR-5000 Wideband,  REALISTIC DX-392.    *
*    Home built Longwave "Hybrid" CW receiver.     *
*    Others which pass thru or are waiting repair. *
*  ANTENNAS:                                       *
*    Coil Loaded 18.5 Meter Long Sloper.           *
*    Roof mounted Hustler 6BTV 6 band Vertical.    *
*    Scantenna Scanner antenna at 7 Meters high.   *
*  LOCATION: Merced, Central California.           *
****************************************************




---
avast! Antivirus: Outbound message clean.
Virus Database (VPS): 6/26/2003
Tested on: 6/27/2003 4:26:08 AM
avast! is copyright (c) 2000-2003 ALWIL Software.
http://www.avast.com