DL6ZB – German Amateur Radio Station
DL6ZB (ex DL6MBI)
CQ Zone 14 – ITU Zone 28 – JN58up
Rolf L. Heine – Kirchenäcker 6 – 84048 Mainburg – Germany
Ham Radio Maker's Corner
A selection of my weekend projects
1. Receivers & Minimal Art
Minimal Art Receiver Design
Two BJTs are used in this simple direct-conversion (DC) amateur radio receiver.
Low-Impedance Headphone Minimal Art Receiver
No high-impedance headphones? Take a look here.
The One-Point-Five-Volter Receiver
Weekend project: a single 1.5 V battery cell powers this well-performing shortwave receiver.
Direct-Conversion Receiver
A more sophisticated direct-conversion (DC) transceiver.
Extreme Minimal Art
Single-transistor receiver and transmitter.
SDR
SDR project with a Tayloe mixer and an Si570 oscillator, including BASCOM code.
2. Transceivers
ZB-1
CW QRP transceiver for 30 m. A weekend project built with only five BJTs.
ZB-2
QSK QRP transceiver for 20/80 m. A classic-style analog CW transceiver using the "imaging" (band-imaging) technique.
ZB-3 (under construction)
A low-power-consumption, miniature QRP SDR transceiver covering the 630-meter to 2-meter bands. This new project is at a preliminary stage. Stay tuned!
ZB-4
A modernized classic QRP concept. CW transceiver for 80/60/40/30 meters.
QRP CW Transceiver (Type 002)
Direct-conversion QSK QRP transceiver.
3. Oscillators & Exciters
10.7 MHz (9 MHz) Filter-Method SSB Exciter
SSB exciter with built-in IF clipper for single-sideband transmitters.
Low-Power-Consumption PLL
AD9833 DDS-controlled 12–18 MHz PLL oscillator.
The DL6ZB VXO-PLL
An advanced method for generating rock-solid PLL frequencies without microcontrollers.
Tunable Crystal Filter for Superhet QRP Transceivers
Add this minimum-parts tunable crystal filter to your homemade receiver.
4. Miscellaneous
DL6ZB Iambic Morse Keyer Update
Low-cost CW iambic memory keyer.
Precision S-Meter
S-meter design for direct-conversion QRP receivers.
Low-Cost VSWR Indicator PDF
Sensitive VSWR meter for QRP transmitters.
Kenwood TS-130V CW AGC Modification
A simple method of taming the transceiver's nervous CW AGC.
Hint for Bug Users
A simple method for debouncing a Vibroplex bug.
Sommerkamp / Yaesu F-Line (German language)
Einige Tipps für den Kauf des RX FR-100B und der TX FL-100B / FL-200B.
Panadapter Mod for Shortwave Transceivers
A broadband Wilkinson divider turns your transceiver into a modern rig.
Yaesu FT-817 & CT-62: CQRLOG CAT Control for Ubuntu 20.04
A short CQRLOG installation guide for Linux Ubuntu 20.04 users.
