bc1 battery cover

Homebrew traps - Traps can be one way round multiband coverage without the need of an atu. Learn how to homebrew your own traps

Multi-Band Super Mini Loop Antenna - Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC bands, need a lot that is at least 100 feet across.

G4FON Magnetic Loop Antenna - A simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible

DL8NCR AllBand Dipole - A multiband wire dipole cover 80 to 10 meters.

Antenna Efficiency - K0BG article con antenna efficiency covering topics like radiation resistance, coil losses and ground losses, other kind of losses. How calculate efficiency and Bandwidth Notes

Duoband DK7ZB-Yagis 2m and 70cm - These Yagis cover the range of 144-146MHz on 2m and 430-440MHz on 70cm. They can be used for alle modes (FM and SSB/CW). On both bands the SWR is good across the whole band.

Beacon Signals.com Priority listing - Covering all areas of beacon signals including radio beacons and beacon technology. Access free beacon recordings and graphs using Spectrum Lab, SpectraVue, and CW Skimmer.

CARLA Repeater Network - C.A.R.L.A. is a growing network of repeaters providing coverage across Northern & Central California and Western Nevada. It is intended to be used as a reliable communications resource during significant local, regional and wide area incidents, and is open to all licensed amateur radio operators

Red Covered Bridge ARC - The official website of the Red Covered Bridge Amateur Radio Club of Princeton, Illinois

Downeast Spectrum Amateur Radio Newsletter - The Downeast Spectrum is an Amateur Radio newsletter covering topics of interest to enthusiasts of the Ham Radio hobby and service. It also reports on the activities of three ham radio clubs in Down East, Maine

QSY Society Amateur Radio Club - The club is promoting awareness of Henry Hudson's 400th anniversary voyage of discovery, as well as encouraging others to try amateur radio and foster goodwill.

K2JJI Tryon Amateur Radio Club - Listen to the K2JJI repeater (146.70- PL 100.00 Hz) located on Fulton Co. NY. Coverage of grids near and around FN23/FN22.

Indiana Area Live Scanner - Scanner Covers Analog & Digital Law Enforcement/Fire/EMS/EMA/Schools/Utilities/Municipal/Highway Maintenance & Forestry Communications In Perry & Spencer Counties In Indiana & Hancock County In Kentucky

Haredata Electronics - Haredata Electronics is your one stop shop for Power Supplies, Chargers, Battery Packs & Accessories. Power Supplies Chargers, Battery Packs , Power Supply Accessories , Haredata Electronics Limited,

New York Repeater Directory - It origionally included NYC Metro and Long Island, but has expanded to cover all of eastern New York as well. Future plans include expanding to cover all of New York state. The listings are a reflection of each repeater's true status, regardless of their coordination

A 2.3GHz to 432MHz receiver converter - Receiver converter that can be plugged to the backside of the Yaesu FT-817 battery powered portable transceiver

Radio Antenna Design - Covered all kind of antenna desings for all bands and radio applications.

Advanced Battery Systems - Specializes in providing portable power solutions. Custom battery pack assembly is primary function, but also distribute batteries for many battery manufacturers.

Radio Works - RadioWORKS is a tool for calculating various items related to radio waves and radio wave propagation. Get detailed information about a frequency, such as the free-space wavelength, band classification, propagation methods, common transmitter configurations, etc. Calculate antenna lengths or frequencies. View a 3D coverage map by providing a latitude / longitude coordinate and transmitter height.

HF power amplifier using GI7B - Gi7b is tube designed for microwaves but working good as HF amplifier. Idea is to build cheap, reliable HF amplifier covering 160 meters band.

Rechargeable Battery Review - Rechargeable Battery Comparisons

Battery voltage booster - A battery voltage booster project with pictures and schematic by KD7W

VersaBeacon Project - The VersaBeacon is a frequency agile, modulation agile RF source using a DDS chip and minimal support circuitry. It covers a frequency span of 1MHz to 150MHz in 1 Hz steps and provides a variety of modulations

SQ2OMC HF Transceiver Priority listing - Description of the homebrew shortwave multiband SSB transceiver, that covers 0.1 - 30MHz. made by SQ2OMC

A 40 meter SSB QRP transceiver - This transceiver was conceived as a power-efficient, small, lighweight unit to be carried in the backpack, along with antenna and battery.