antena 80 metros isotron

K3KY's Short Beverage  ^pop - Originally planned as an 80/160 Beverage, this antenna is a terrific performer on 40 and 30 meters

7 MHz Vertical antenna  ^pop - 7 MHz Vertical antenna for ham radio - 40 meter band in spanish

PA0NHC 80/40mtrs dipole antenna - Dipole antenna for 80 to 20 mtrs with END-coax feed by PA0NHC

Switchable Antenna 80/160 meters band Priority listing - A switchable antenna for 80/160 meters by IK1ZOY. A new version of a 1/4L 80 m. dipole modified for use in 160 m. band. using it's own coaxial cable feeder to wrap a coil.

80M Vertical antenna with capacitance hat  ^pop - Simple wire antenna cheap to make, using readily available materials, Low angle radiation, with rejection of high angle signals Wide bandwidth, with resonance at the 80M DX window (3.790-3.800 MHz); and Maximum height is 40 feet

Comparison of Beverage antenna - A ranking of receiving antennas based on noise being evenly distributed in all directions. These rankings are most accurate in the frequency range of AM broadcast, 160 or 80 meter bands

80 Meter Multiband doublet antenna - 80 meter multiband doublet antenna with open wire feedline for 80-10 meters by N1LO

Antennas and Grounds for apartments  ^pop - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna

802.11b Antenna on the Cheap - Build a 802.11b antenna using PVC, some cheap copper tubing, a Pringles can, and some scrap cardboard, in a few hours. Tests state a 12db gain on 2.4 Ghz

GAP Titan DX performance test - GAP Titan DX Evaluation, antenna for 10m 15m 20m 40m 80m

New HF antenna HB9ABX  ^pop - A new, revolutionary design allows the construction of small HF antennas, which provide the same efficiency as large antennas. This antenna can be built for all HF bands, from 10 to 80 m.

Half square antenna - The elevated half square antenna is a very simple antenna that can be constructed from common materials yet gives significant improvement over a dipole at the same elevation. Ground mounted versions of this antenna are commonly used in amateur radio for 75/80 and 160 meter bands

IC-PCR 1000 in Germany on-line receiver - Icom PCR 1000 HF/VHF/UHF Antenna VHF/UHF Diamond X 50N HF W3D22 80m/40m 34m (111,54 feet) long based in Germany Hamburg JO43XO.

Fax480 - FAX480 was developed to provide for relatively high resolution image transmission on HF, VHF, and UHF amateur radio bands. FAX480 was designed to bridge the gap between conventional slow scan television (SSTV) and conventional facsimile techniques.

A low power 3.5MHz ARDF transmitter - This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.

ARDF80 Receiver - Documentation to build your onw 80m ARDF receiver

Isotron antenna manulas - From this page you can download the following manuals, in Adobe Acrobat format .pdf, 40 Meter Isotron, 80 Meter Isotron

Radio Free London - Radio Free London is now BACK ON THE AIR. We are now back on medium wave (AM) on 1125kHz (266 metres) and 5805kHz short wave every Sunday. The SW service consists of a 4 hour loop of 2 programmes. The medium wave service has a third bonus programme making it a 6 hour loop of 3 programmes.

Satscape - Satscape is a freeware program for the PC Macintosh and Linux. It produces real-time displays of where any Satellite is, and predicts passes for your locale. There are about 8000+ satellites in orbit, a lot of these are just junk and debris such as discarded rocket bodies, but quite a few are working Satellites.

ProScan 780 - Computer aided scanning software for the BC 780, commercial runs under windows.

CCRadioTech Uniden programming software - Free windows control/programming software for the Uniden Bearcat UBC-3300XLT and 780XLT

Audio spectrum analyzer  ^pop - Analyzes audio from 10 Hz to 20 kHz, input from microphone or wave file, Variable sample rates (8000 Hz, 11025 Hz, 22050 Hz, 44100 Hz) Variable transform sizes (1k, 2k, 4k, 8k) Upper and lower limits adjustable Continuous, averaged, peak hold

Different grounds for different shacks - Technical questions answered about grounding techniques, in pdf file

A 80/40m DDS controlled QRP CW transmitter - JUMA-TX1 is a 5W CW transmitter for the 80/40m bands. Juha (OH2NLT) and Matti (OH7SV) have had high quality CW keying and a compact size as design goals for this project. No coils need to be wound to construct this transmitter!

A 80/40m Direct Conversion HF Receiver with DDS VFO - Juha (OH2NLT) and Matti (OH7SV) have designed JUMA-RX1, an award winning 80/40m direct conversion HF receiver with highly accurate direct digital synthesis VFO. The receiver is very compact, because it constructed using surface mount components. No coils need to be wound to construct this receiver!