Over the years I made many QSO’s on 10.1 MHz with the HDC10.
Nearly all of the QSO are made within of Europe.
I ran through the pile of HDC10 QSL-cards and came to the following result:
DXCC- countries worked and confirmed (HDC10 only,1992-2003 )
4J, 4U0ITU, DL, ES, F, G, GM, HA, HB9, I, IM,
LA, LX, LY, LZ, OE, OH0, OH, OK, OM, ON, OY,
OZ, PA, UA, S5, SM, SP, TF, TK, UD0, UA9, YL, and YO.
This list shows that the RIG is doing very well al though it is a relatively simple transceiver. Homebrew, QRP and CW (Morse code) is a great combination.
- The lack of a side tone.
- Only hearing the clicking of the key
- The low pitch tone of the receiver
- The need for quickly operating the T/R switch after transmission, to switch to receive
makes working with the HDC10 or HDC14 a unique experience.
I had many hours of great FUN with this simple transceiver with just 9 transistors.