Kongsfjord - 70°43'N 29°21'E
Collection of useful
modifications and projects
by Dallas Lankford (1942-2020)
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The articles are organized according to the bookmarks below - click on the bookmark to go directly to the
section.
New Improved Passive Phasers | 554 kB | 2-AUG-2007 |
Phased MW Receiving Verticals | 222 kB | 15-AUG-2005 |
AM Synchronous Detector Experiences | 385 kB | 19-JUL-2006 |
Elliptic Low Pass Audio Filters | 678 kB | 4-JUL-2005 |
Audio special: On The Causes And Cures Of Audio Distortion Of Received AM Signal Due To Fading | 346 kB | 6-FEB-2006 |
Grayland Quad Delta Flag Array Report | 1.8 MB | 2-MAY-2009 |
Quoddy Head, ME - October 2008 | 948 kB | 21-OCT-2008 |
Hammarlund HQ-180(A): AGC Mod | 166 kB | 6-JUN-1990 |
Icom IC-703 Slow AGC Release Mod | 185 kB | 30-NOV-2005 |
Icom
IC-703 MW and LW Attenuator Removal Mod (see also Bjarne Mjelde's impressions of the IC-703 here) |
157 kB | 29-NOV-2005 |
Icom
IC-746 Pro: Impressions and mods (see also Bjarne Mjelde's impressions here) |
802 kB | 13-JUN-2004 |
Icom IC-746 Pro: Internal Noise Blanker Adjustment | 175 kB | 27-SEP-2004 |
Icom IC-746 Pro: Line Out Mod | 520 kB | 30-OCT-2005 |
JRC NRD-525: A technical review | 184 kB | 28-JAN-1993 |
JRC NRD-525: AM AGC mod 2 | 179 kB | 1-DEC-1992 |
JRC NRD-525: Filter Leakage | 982 kB | 15-APR-1993 |
JRC NRD-525: Narrower Bandwidth Noise Blanker | 120 kB | 8-JUN-1998 |
JRC NRD-525: S-meter Damping | 267 kB | 28-JAN-1993 |
JRC NRD-92M Noise Problems | 348 kB | 5-NOV-2002 |
Software Defined Receivers (SDR)
Perseus
Review (see also Bjarne Mjelde's impressions here) |
143 kB | 2-FEB-2008 |
SDR-IQ Overload Characteristics | 1 MB | 14-JAN-2008 |
SDR-IQ Preamp Mod | 390 kB | 27-JAN-2008 |
SDR-IQ Spurs and Intermod | 95 kB | 29-JAN-2008 |
Racal RA6790/GM: A brief review | 237 kB | 13-DEC-1993 |
Racal RA6790/GM: AGC modification | 363 kB | 11-NOV-2004 |
Racal RA6790/GM: Volume Control Modification | 400 kB | 18-MAR-2005 |
Racal RA6793(A): uP Crud Noise Elimination Mod | 164 kB | 6-FEB-2005 |
Racal RA6830 Digital S-meter mod | 856 kB | 21-NOV-2003 |
Racal RA6830 Encoder shaft mod | 161 kB | 14-NOV-2003 |
Racal RA6830JD: Microprocessor Noise Fix | 233 kB | 13-NOV-2003 |
Telefunken E 1501 Adventures (see also Bjarne Mjelde's impressions here) | 890 kB | 13-FEB-2005 |
WJ-8711A: Microprocessor noise fix + impressions | 266 kB | 10-JUN-2004 |