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Band Pass Filter kit set




26
Nov

DIY
0 Comment
Date: 26 Nov 2021
This item is a set of 10 band pass filters (BPF), one for each of the HF bands 160, 80, 60, 40, 30, 20, 17, 15, 12 and 10m. The filters are designed for receiver input filtering and use the popular double-tuned-circuit which is reliable and easy to build, without needing access to any special equipment. The kits use a high-quality double-sided PCB with silk-screen, solder-mask and through-hole...

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Antenna Rotator with Arduino.




11
Sep

DIY
0 Comment
Date: 11 Sep 2020
Antenna Rotator with Arduino. More info on www.ea7hg.com or ea7hg@hotmail.com https://www.youtube.com/watch?v=N6pSJuTp1pE https://www.youtube.com/watch?v=rb6bFKrHNz4

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RFzero™ board




17
May

DIY
0 Comment
Date: 17 May 2019
The RFzero™ board is an Arduino compatible GPS based Si5351A RF signal source. The typical use of the RFzero™ is as a beacon (IBP, SPB, CW, FT8, JT9, PI4 and WSPR), signal generator, VFO, Qatari Oscar 100 dual LO or a low cost 10 MHz GPSDO. A dozen of programs (sketches) are integrated into the Arduino IDE for easy upload to the RFzero™ so you don’t need to write the software yourself. The...

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Antennas Remote Lightning Protection




04
Dec

DIY
0 Comment
Tags: ,,,
Date: 04 Dec 2017
Amateur Radio Antenna Remote Disconnect for Lightning Protection from alk on Vimeo. Video by Art K4FWJ A single lightning strike can destroy thousands of dollars worth of radio equipment. Experienced amateur radio operators know the only sure protection is complete disconnection. This can be a chore, especially when multiple antennas are involved. As well, it is all-to-easy to forget to do it. This...

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DYI – 4 Bands HBR4HF 4 Band HF Transceiver




25
Jul

DIY
2 Comments
Date: 25 Jul 2017
Hambuilder HBR4HF (4 Band HF Transceiver) by E-bay: The packet consist of: HBR4HF board exciter + LPF + BPF + PA (assembled and tested) RTC01C (16x2 LCD display) Controller with si5351 synthesizer VFO/BFO (assembled and tested) Aluminum enclosure with heatsink and related connector (need to assembly by your self) Condenser mic with loudspeaker (need to assembly by your self) Heterodyne...

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RTC03 HF Transceiver Controller (DYI)




25
Jul

DIY
0 Comment
Date: 25 Jul 2017
RTC03 HF Transceiver Controller with Si5351 Freq Synthesizer VFO/BFO + Enclosure This listing is only the Controller and Enclosure, you still need to add Exciter, Power Amplifier, LPF/BPF to do communication, RTC03 is the newest version of radio transceiver controller (RTC) Jalapindai/Homebrewpartner. This RTC version used Si5351 as frequency synthesizer and used 2 of 3 output on the chips....

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Arduino Ham Radio Starter Kit




01
Apr

DIY
0 Comment
Date: 01 Apr 2017
Jerry VE6TL at the University of Calgary Amateur Radio Club Welcome to my Arduino Ham Radio Starter Kit, a “virtual box” of ideas and motivations with one objective: More hams and their clubs engaging the local maker community as a gateway to amateur radio.  First of all, let’s think about the three waves of technical hobbies over the past century. In a technical hobby, individuals and groups...

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Icom IC-7300 wide band modification




08
Dec

DIY
2 Comments
Date: 08 Dec 2016
Icom IC-7300 HF/50 MHz Transceiver - wide band modification. 1. Check the radio to be disconnected from power supply 2. Please, use ESD discharge measures! No kidding, use ESD countermeasures both for your body and for the soldering station! 3. Use a lot of soldering flux! The diodes are very sensitive to high temperature and the solder Flux (I use GEL type) help in reducing the temperature for the areas...

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