VE4FEB Amateur Radio Station - Operator: Fernan Bolando
- Grid: EN19lv
Propagation Data
WSPR Data – Track frequency trends and propagation conditions.
Station Photos
Historical Snapshots of the Station Area
Station Equipment and Tools
- Yaesu FT221 VHF transceiver
- Installed modifications: CTCSS tone generator
- Kenwood R-1000 Communications Receiver
- TX1 80 to 10m Band Transmitter (Crystal controlled, 20W output)
- TX0 3-band QRP Transmitter (Analog VFO)
- 03 Jun 2022: Ongoing replacement of filters to reduce RF leakage between LO->Preamps. Final amplifiers will be redesigned.
- Rigol DS1052E Digital Oscilloscope
Product Page
Manual
- Quansheng UV-R50
- TX3 DDS/SI5351 Transverter-Transmitter
- Hammarlund HQ-145A updates, restoration done
Brochure
Manual
Schematics
HQ-145X Test Procedure
HQ145X Test Specification
- Recap seems to have been done by previous owner
- Replaced HF Oscillator with 6100 tube
- Fixed broken S-meter needle
- Minor HF Oscillator alignment - Target: 1% to 2% dial accuracy
- Minor RF alignment - Target: 0.6uV to 1uV sensitivity
- 29 May 2022: After 3 years of service, HQ145A was waiting for one of its IF transformers to be fixed (suspected silver mica disease). As of 16 Dec 2023, this has now been resolved.
- Commodore C64
- Secondary propagation display
- Secondary callsign lookup directory
- Secondary skimmer check and submit
- QSO log book entry using an
ed
-like editor
- Atari 600XL
- USB keyboard for a Plan9/Unix machine
- CW keyer
- Homebrew Spectrum Analyzer Blog Post
- 16 Mar 2025: Maintenance update: 125Mhz Band Pass Filter insertion loss is 11dB
- NanoVNA H3.4 Network Analyzer (10 kHz to 1.5 GHz)
Wiki Page
Support Forum
Manual
- QRPLabs QCX Mini (20m) - Battery-powered for outdoor use
QCX Mini Page
Schematic - Main
Schematics - Display
Assembly Manual
Operators Manual
- QRPLabs QDX - Quick digital mode QSO (FT8, JS8, etc.)
QDX Page
Schematics
Assembly Manual
Operators Manual
- 13 Oct 2024: QDX is now offline due to transmission failure. No CLK0 output from UC11 (checked at IC3 and R41). Further investigation needed. QMX is now used for digital mode until repaired.
- 26 Oct 2024: QDX under testing. Replaced IC3, Q9, and Q11 to restore transmission. Made a few FT8 contacts. Also replaced cracked C63 (damaged upon arrival but lacked replacement parts at the time).
- QRPLabs QMX - Multi-band support for outdoor use
QMX Page
Schematics
Assembly Manual
Operators Manual
- Awaiting new firmware to fix birdies and add features
-
Tektronix 2465 Oscilloscope
TekWiki Page
Operators Manual
Service Manual
-
TinySA Ultra - Spectrum Analyzer
Product Wiki
-
HF1 - Low Dipole Antenna for HF 40m, 20m, 15m
-
HF2 - Low Dipole Antenna for HF 60m, 30m
Technical Notes
Projects
VOACAP for Plan9 - Plan9 port of the FORTRAN-based VOACAP program.
Clacker Works BBS - Experimental Multi-User BBS with Amateur Radio Tools.
© 2025 [email protected]. Created with ed.