Technical Topics

From HFUnderground

Contents 1 Antennas 2 Receivers 2.1 Portables 2.2 Desktop Radios 2.3 Software Defined Radios and Web Receivers 2.4 Widebanded Radios 3 Signal Conditioning and Processing, Error Correction 4 Transmission Modes 5 Transmitters

Antennas

• Beverage
• Dipole
• Random Wire
• Wellbrook ALA 1530plus

Receivers

Note: also browse the Transmitters section below, as many of the radios listed there are transceivers with very good receive capability.

Portables

• Degen DE1103
• Kaito KA1102
• Radio Shack DX-440 - Also known as the Sangean ATS-803A
• Sony ICF-2010
• Sony ICF SW-7600G

Desktop Radios

• Century 21
• Icom R75
• JRC NRD-545
• WJ DMS-105a-2

Software Defined Radios and Web Receivers

• Internet Receivers
• Perseus
• RF Space SDR-14
• RF Space SDR-IQ
• RF Space netSDR
• RTL-SDR
• Software Defined Radio

Widebanded Radios

• Yupiteru MVT-9000

Signal Conditioning and Processing, Error Correction

• ARQ - Automatic Repeat Request
• Bandpass Tuning
• Digital Signal Processing
• FEC - Forward Error Correction
• Noise Blanking
• Notch Filter
• Noise Reduction
• Signal Attenuator - DX/Local switch
• Synchronous Reception
• Timewave DSP-599zx

Transmission Modes

• AM
• CW
• FAX
• FM
• Hellschreiber
• KG-84
• PSK31
• RTTY
• SSB
• SSTV

Transmitters

• Corsair
• Grenade
• Icom IC706 MkIIG
• Icom IC-746PRO
• Kenwood TS-440
• Kenwood TS-480
• Kenwood TS-590