Gear Mods
& Bench Tests
Yaesu FT-101EE
One of the best looking and perhaps most classic of the Yaesu rigs - a short refurb
Kenwood TS-520S
The first modern radio I owned was a '520S. Finally have one in the shack after 40 years!
Why Your Filter is Not Working
Have technology from space aliens & NSA - yet I still can't filter the guy up the band!
A Couple of SX-101A Plots
A look at filtering and drift on a classic
YG-455C-1 for the TS-830S
Adopting the YG-455C-1 for use in the Kenwood TS-830S 2nd IF
Kenwood TS-820S
My 1977 dream rig - now joining the shack lineup. Details on the rig and mods, of course, here.
OCXO for the IF-2000
Tame the drift from the RFSPACE IF-2000 with this simple OCXO conversion
DMU Bandscope Repair
A cure for the bandscope blues here
FT-9000 Roofing Filters for the FT-2000 Sub Rx?
VNA plots of roofing filters found in the main RX of the FT-9000, and the sub RX of the FT-5000. What does this mean for the FT-2000? Now with DR3 measurements!
FT-2000 Sub RX AF Mod
Quiet down the weak signal hiss from the second RX with this easy mod ...
FT-2000 Front End Protection
Yaesu has made some changes to the front end protection circuits. See the details here.
FT-2000 DSP Filter Characteristics
Plots of the DSP filter. As well as an investigation into the magic behind APF. And how about CONTOUR? It's all here!
Latest
Homebrew
Combo Analog-Digital Filter
A blend of classic and modern audio filtering for the hybrid rigs in the shack
A Walk Down CW Keyer Lane
For want of an old-school WPM display, the journey can be long indeed
DDS Sidetone
MFK keyer mod makes sweet music of the CW variety
Larcan 1KW 6m SS Amp
Just in time for 6m DX!
RX Antenna Switching
Just part of what's behind door #1.
Tower for 6m/12m/17m
Mixes WARC antennas, a tilt-up tower - and a basketball goal!
Clifton Labs Z10023B
Got BC IMD? The latest HPF from K8ZOA is the answer
From Attic to Acres
New country QTH brings a new shack and antennas. Follow the progress here.
Stealth Attic Array Beam Rebuilds
Featured in Sept 2011 QST and NCJ May/June 2012
Shack,
Antennas
Lightning Damage - 2019
A reminder from mother nature as to who rules the roost
Paddles for the CW Nut
An assortment of American, Italian and Russian paddles
New Towers and Antennas!
After damage from high winds, it is time to get some grown-up hardware outside. Pictures here.
Expanded Shack and Towers/Antennas section. Lots of new web content detailing the tower builds and the antennas.
Shack Automation - Field Day Style
(PDF 2MB download) Automatic band decoding, antenna switching triplexer and BPF all in one
So2r BPF Compared
How the 5B4AGN, Dunestar 600 and Array Filtermax measure up