pa0nhc licensed radio amateur and sound recording pages.
PA0NHC was born in march 29 1939 and VHF licensed in 1965. Full licensed in 1980. QTH: De Meern, in the center of The Netherlands, GPS 52.084849, 5.013264.
(C) The use, copy and modification of all info on this site is only permitted for non-commercial purposes, and thereby explicitly mentioning my radio amateur call sign "PA0NHC" as the original writer / designer / photographer /publisher.

To promote hobbyists rebuilding my projects, i offer
professional PCBs.
When you order one, consider yourself participating in a kind of crowd funding.

Antenna VSWR sweeper V2  
fast and easy display of the VSWR graph of antennas, filters and cables.
Magnetic Near Field Indicator
Tune your magnetic loop antenna for best radiation.
Famous pa0nhc version of "Miniwhip":
low IMD active LW/MW/SW DX antenna
Magnetic loop t
ransformer matching PCB
for a 40m & 80m 10m circumference loop
NEW => 0.5mW to 200W - 200 MHz thru line RF rms power meter
 -3 to +53 dBm. Adjustment-free.

PCBs for the following projects will become available  :
1uW to 4mW - 2.5 GHz RF rms low power meter
with internal 50 Ohms load

-30 dBm to +6 dBm.  Adjustment-free.
  Noiseless 12Vdc / 185mA power supply
for RFnoise-critical electronics (Miniwhip).

ARDFrx80 :
Advanced design for a 80m portable ARDF receiver.
Advanced design for a 2m portable ARDF receiver. 

How to All my PCBs were designed using freeware. 
After an update of Windows10 it refused to work.
Here is the solution :
(re-) Install FREEPCB under Windows10
Go to RF  1.8-30MHz short wave.
Go to

VHF  144 MHz and 435 MHz.

Go to AUDIO  High Quality microphone electronics.  Classical music recording.
Go to Misc. / Div.   Hoe PCBs maken.  BAD or GOOD capacitor types? Lightning damage.  And more . . .

2nd operator "Sokkie" (Socks)
I understand and like cats.
Not dogs.
Because (some) dogs show
unpredictable behavior