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• WW2Y/K2WI Beverage design - Ideas for enhanced beverage antenna performance, Single wire beverage improvements and arrays of two beverages. This article explores improving reception with Beverage antennas. It discusses single wire Beverages and their limitations. Then it compares two array configurations: broadside and end-fire. Broadside offers better front-to-side ratio but requires more space. End-fire offers better front-to-back ratio and takes less space but is trickier to implement for multiple bands. The article concludes with a 3-element end-fire design for excellent performance and explores possibilities for dual-band configurations.
  [ Hits: 4057 | Votes: 4 | Rating: 9.5 ]

• Coax Notch Traps - Attenuating adjacent bands - Targeted Attenuation for Adjacent Bands. Filtering is needed between the two rigs to prevent physical damage to the RX front end and to prevent the kinds of high-signal overload conditions like desense and IMD - as well as containing harmonic energy.
  [ Hits: 134 | Votes: 0 | Rating: 0 ]

• SDR Cube - A self-contained and portable SDR Transceiver using a Softrock front end and embedded Digital Signal Processing ... No PC required!
  [ Hits: 1682 | Votes: 0 | Rating: 0 ]

• 50 MHz Noise Canceling Receiver Front End - Reducing noise on six meter band
  [ Hits: 457 | Votes: 2 | Rating: 5 ]

• Elecraft K4D Sherwood tests - Collection of test reports done by Rob Sherwood on the Elecraft K4D, this version of the K4 does not have the hybrid front-end.
  [ Hits: 84 | Votes: 1 | Rating: 10 ]

• Deaf FT1000MP MkI - How to repair a FT1000MP front end, damaged from too much neighbouring RF during contesting
  [ Hits: 850 | Votes: 1 | Rating: 1 ]

• PSKGNR Front end - A front end program that adds typeahead, macros,and much more to PSK31SBW orPSK31EVM.
  [ Hits: 1222 | Votes: 7 | Rating: 6 ]

• Dream DRM Receiver - Open-Source Software Implementation of a DRM (Digital Radio Mondiale) Receiver. Dream runs on virtually any pc and requires a receiver front-end to work as a real radio.
  [ Hits: 1071 | Votes: 3 | Rating: 10 ]
• SDRangel - SDRangel is an Open Source Qt5 / OpenGL 3.0+ SDR and signal analyzer frontend to various hardware TX & RX Software Defined Radio. SDRangel uses sample source plugins to collect I/Q samples from a hardware device.
  [ Hits: 161 | Votes: 1 | Rating: 6 ]

• YCCC 6 Band Receive Bandpass filter - This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands.
  [ Hits: 1962 | Votes: 2 | Rating: 9.5 ]
• RTLSDR Coax Stub - Cutting out the noise using a simple coax filter to improve the poor front end filtering
  [ Hits: 755 | Votes: 2 | Rating: 5.5 ]

• Experimental HF 6-band SSB transceiver - An SSB radio for the HF bands will be presented. Featuring 12 to 20 Watts of output power (depending on DC supply), full DDS frequency generation, covering 6 major frequency bands (1.8, 3.5, 7, 14, 21 and 28 MHz) within the short wave amateur radio spectrum. The rig also features colored LCD and front panel backlight.
  [ Hits: 709 | Votes: 14 | Rating: 9.86 ]

• 23 cm GaAs FET preamplifier - On 23cm the best way to obtain a good RX-sensitivity is to use a GaAs-FET in the front-end, since these devices show very low noise figures.
  [ Hits: 4050 | Votes: 6 | Rating: 4.67 ]

• RFI - Intermodulation - Getting squeaks and squawks from your H-T? Are pagers crunching your mobile rig's front end? Here's how intermod happens--and how to fight back!
  [ Hits: 674 | Votes: 2 | Rating: 5.5 ]

• Yet Another Front End Saver - The KD9SV Front End Saver in a new fashion. If you use a separate receive antenna, you need a Front End Saver to eliminate the possibility of blowing out your receiver's front end while using an auxiliary receive antenna.
  [ Hits: 268 | Votes: 0 | Rating: 0 ]
• A Transceiver Front-End Protector - A transceiver front-end protector in high signal level environments. An homemade RF limiter to protect your receiver front-end from high radio frequency.
  [ Hits: 664 | Votes: 0 | Rating: 0 ]
• KD9SV Front End Saver - Homemade RF limiter project, to protect the K3 receiver front-end for high radiofrequency based on the original KD9SV project.
  [ Hits: 328 | Votes: 0 | Rating: 0 ]
• Receiver Front End Protection - A simple receiver front end protection ciruit idea to protect your receiver when it is not in use
  [ Hits: 1709 | Votes: 1 | Rating: 4 ]
• RF Front End Protector - If You are using a separate receive antennas then you need a good protection circuit to eliminate the possibility of blowing out the receiver front-end while using these auxiliary receive antennas specially on low bands.
  [ Hits: 178 | Votes: 0 | Rating: 0 ]

• 23cm Transverter - A small (FT-817) I.F. radio driving a 100w transverter with a 1db nf front end.
  [ Hits: 572 | Votes: 0 | Rating: 0 ]

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