PTT MIC from Junk

    Recycling junk materials to useful things can also be done by giving new meaning to them. Here presenting my PTT MIC for my home brew HF Transceiver. This is not a universal compatible but i can assure its compatible to all equipment interfaces in my shack. Its harvested it mostly from junk materials and i doubt about the reproducibility of this specimen. 

PTT MIC

HF Transceiver in my shack ..!!!

       Hombrewing a transceiver without kit is a real adventure. Learned lot of things by brewing this transceiver and tuning it without a receiver was challenging. Its BITX design i followed and VFO is DDS based. Got few contacts by first power up. Output power is not measured accurately and i believe its not more that 8 Watts. By the way i like to operate on QRP mode to save some power as well as to learn capability of qrp mode.

HF Transceiver

1:1 Ruthroff Voltage Balun

    This balun transformer can be used for impedance matching with tuned dipole. Also it gives a balance in voltage levels in the arms of dipole. Ofcource it is a voltage balun and uses Ferrite rod from old MW radio's. The Copper wire used is 18 SWG wound trifilar on ferrite rod.

19th All Kerala VHF Fox Hunter..

      On behalf of 19th All Kerala VHF Fox hunt.. along with VU3VIO Om Vishnu we managed to hunt down fox in least time expense.. Grabbed this years rolling shield.. Geographical region chosen was Alappuzha town a city well known for backwater tourism..

Prizes for Participants

My old television with vertical circuit blown

      Started my investigation from initial symptoms of my old CRT TV... Found that vertical circuit is blown. Sharing pic before and after fault rectification.

SG-230 Smartuner on my bench for fault rectification

      A smart build simple construction with a central microprocession is the overall structure of SG 230 tuner. just sharing pictures i took before and after fault rectification.

Tuner SG 230 overall

International Space Station SSTV Transmission

      It was amusing moment for the Ham radio operators to acquire Slow Scan Television Signal (SSTV) transmission experiment from International Space Station -ISS by active Russian Crew on behalf of 80th anniversary of the first cosmonaut Yuri Gagarin on December 20th, 2014 as well as January 31’st and February 1st  ,2015.

Fig:1 ISS SSTV Signal Transmitted under Call Sign RS0ISS on DECEMBER 20th, 2014