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.

Many links to sites with receiver reviews can be found here. (Note: offsite wiki)

Numerous articles on Software Defined Radios including models, software, reviews and more can be found here (Note: Offsite wiki)

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

• Emission Designator
• AM
• C-QUAM
• 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