2M 144 Mhz yagis

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2M 144 Mhz yagis

2M 144 Mhz yagis

Follow the instructions carefully to avoid making mistakes

post 26 Dec 2024

Antenna for UHF VHF Links →

153

23cm double bi quad antenna
It's fed with a short length of RG-223 co-ax, fitted with a balun sleeve made from the braiding off some UR67

2 meter VHF Antennas 7 elements and 10
2 meter VHF Antennas 7 elements and 10

2 Meter 5 Element Quad
I used EZNEC to model this antenna. I got the boom from a large UHF TV antenna that was 70 long

12 element zl speciale

Psion ham software

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Radioassistance

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Simple Rtty codec system based on arduino e android A unit for receiving Rtty transmissions was created, the differences are essentially limited to the Arduino software used

All band dipole Mk2 The All Band HF Doublet is often referred to as a random length dipole as it is generally as long as the available space within reason, but here are a couple of limitations to the ultimate dipole length

160M 1/4 Wave Vertical 160m vertical antenna project. It is 100' of Rohn 25G and a 20' aluminum stinger. The base is made out of four 6' power line insulators sandwiched between two Rohn base plates. 7/8' stainless bolts hold the assembly together. 32 radials 50' long and 30 radials 100'

DHD Double Half Delta

DHD Double Half Delta This is a dhd double half delta in theory it should return a low signal but with a good s - n ratio roughly like a beverage

Visual CW Tuning Indicator

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Convert ADIF to Cabrillo Format

Convert ADIF to Cabrillo Format Have an ADIF file from amateur radio contesting, but the contest you want to enter wants a Cabrillo-formatted file? This is the tool that you need

trap-dipole-7-10-14-18-50-mhz

Trap Dipole 7, 10, 14, 18, 50 MHz Trap dipole 7-10-14-18-50mhz with balun coax cable

Diy Arduino CW keyer

Diy Arduino CW keyer I added code to read push-buttons on digital pins to trigger hard-coded messages like CQ and CQ SOTA