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New Designs & Articles

Easy 12v Battery Charger with Power supply "POWER ICE 30A"

"Cold" Horn for measurement NF of LNA on 5,7 GHz and 10 GHz

Something about RF & Nf Measurement

 

New Magic QRP SWR Bridge v.3 If you want to buy KIT of Magic Bridge please look at K6VHF`s info here The Lighting Protection for Rotors	If you want to use your old HF tranceiver in VHF in EME or MS QSO - you must increase stability of frequency. For example - i use my old IC745 with my 144/28 XVTR . I have good total value of frequency stability for long sending cycle without TXCO. You need only some a bit of polypropylene for VCO, 2nd LO and LO. In old tranceivers often was problem with switchknobs XIT/RIT. Good idea is - to use old switchknobs XIT/RIT for control of good relay. Now only clear of relay ladder with good contact will be control XIT/RIT . For example - i use russian relay RES-49 in easy layout !
Smart Automatic Antenna Tuner for portable QRV
Horns for 5,7 / 10 / 24 GHz
High dynamic range XVTR Front-End	High IP3 LNA for 1296 MHz with BPF
Power supply "POWER ICE 30A"	LNA for 144 MHz/ Avia Band & FM BC with SPF5189Z by RF Micro Devices
COMPARING DIFFERENT LNA of 144 MHz Band For Use in Noisy City
Magic QRP SWR Bridge	Easy modification AM broadcast receiver VEF-202 After modification ... Air 40m band Air 17m band
QRP CW Transceiver + Modification	USB Power Metr Measure power from 10 MHz to 12 GHz ! RW3AZ, RZ4HD, UA3DHC, R6DZ, RA9YMI, UZ5DU, US3IET have this USB Power Metr
UpXVTR 120-210 MHz for NWT-7	Broadband Electromagnetic Field Finder & Field Strength Meter
10 MHz Rubidium Frequency Reference	Oscilloscope analyzer SWR & S21 parameter

 

This bug want to help us in Field Day

Just see more about.....

 

New ODX via MS in Perseids shows

G4CDN JO02ss<MS>KO81br RA3WDK about 2340 km

Richard G4CDN made screenshot our QSO, let see more info in www.g4cdn.com

VHF : UHF : SHF Cluster __

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