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Pages: Prev 1 [2] 3 4 5 6 7 ... 137 Next   Go Down
 
Subject Started by Replies Views Last post
Using a solar controller as a "switch" for a UPS system HJ4MOR 2 856 Last post August 22, 2017, 08:45:33 PM
by DIECASTING
Homebrew solar charger for QRP? KC8MWG 4 1130 Last post August 16, 2017, 01:42:37 AM
by W9IQ
Using old video driver chips from CRT computer monitor as RF QRP amp/driver WA2ISE 0 444 Last post August 13, 2017, 01:37:41 PM
by WA2ISE
Huntsville hamfest W5KUB 0 2279 Last post August 06, 2017, 09:25:00 AM
by W5KUB
3B28 xenon gas rectifier JS6TMW 10 4472 Last post August 05, 2017, 07:51:42 AM
by KM1H
22 MHz crystal wanted « 1 2 » K4TL 15 3123 Last post August 02, 2017, 10:20:58 AM
by K4TL
Picastar PCB AE8RS 0 373 Last post August 02, 2017, 05:45:31 AM
by AE8RS
Antennas on Amateur Radio Roundtable Tues night W5KUB 0 264 Last post July 30, 2017, 09:40:28 AM
by W5KUB
Simple emergency transceiver for use with NVIS antenna - ideas? HS0ZIB 14 3895 Last post July 20, 2017, 04:39:13 AM
by HS0ZIB
PWRGate schematic equivalents? VE7EA 3 605 Last post July 13, 2017, 08:53:23 PM
by W6EM
Modifying a li-ion battery charger as a small low voltage DC UPS WA2ISE 5 2017 Last post July 10, 2017, 03:09:07 PM
by WA2ISE
Compact Fluorescent Bulb Ballast becomes QRP B+ Supply? AE7TE 4 1177 Last post July 09, 2017, 01:39:58 PM
by KB1GMX
MPF102 FET transistors « 1 2 » W3TTT 20 6439 Last post July 09, 2017, 09:53:18 AM
by WB8LZR
are salvaged toroids ok to use for low frequencys N4AEQ 14 1522 Last post July 05, 2017, 05:52:14 PM
by KD0REQ
1N4004A substitute? KC8MWG 4 985 Last post July 05, 2017, 01:50:18 PM
by WA2ISE
Sprectrogram software for Elecraft K2 Filter alignment 4X1KS 3 1055 Last post July 03, 2017, 06:42:20 AM
by N2DTS
Need for cutoff bias vs open circuit KD6NXI 3 845 Last post July 03, 2017, 04:53:59 AM
by G3RZP
Any way to ID fake MOSFETs? KC8MWG 5 2045 Last post July 01, 2017, 06:27:42 PM
by KC8MWG
noise from DDS VFO « 1 2 » AJ4SN 23 6566 Last post June 16, 2017, 03:19:20 AM
by N3QE
Soldering tips « 1 2 » PJ2BVU 15 2404 Last post June 12, 2017, 07:20:42 PM
by WA7PRC
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