Technical Corner

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12m antenna mast very practical 12m antenna mast very practical Schmellenschmellen · December 05, 2025, 06:01:23 pm A lot of fun could be had with a copper wire ground plane antenna and one of these. I imagine you could tape one on made from an... 7 Replies · 4995 Views Started by Schmellenschmellen	7 Replies 4995 Views	December 12, 2025, 02:09:18 pm by radionortheast
500W LPF 500W LPF ZoZo · June 15, 2024, 09:23:48 pm Been busy working the RadioBuilders own version of a 500W FM Broadcast LPF.Here's a sneak preview of the PCB [ Guests cannot vie... 27 Replies · 10161 Views Started by ZoZo « 1 2 »	27 Replies 10161 Views	January 03, 2026, 09:24:22 pm by Albert H
AM Broadcast 6KHz Compressor Limiter AM Broadcast 6KHz Compressor Limiter ZoZo · November 08, 2025, 06:20:22 am Here is a simple yet affective audio processor for AM / Medium Wave broadcasting using just one quad op-amp. In fact only 3 of 4... 1 Replies · 1988 Views Started by ZoZo	1 Replies 1988 Views	November 15, 2025, 11:24:40 am by Multiplex
AM Valve Transmitter. AM Valve Transmitter. ZoZo · June 07, 2024, 08:51:32 am Video of an AM valve transmitter, which has been modified regarding its modulation technique. The video talks about the change f... 0 Replies · 3526 Views Started by ZoZo	0 Replies 3526 Views	June 07, 2024, 08:51:32 am by ZoZo
Band Pass Filter for 27Mhz Band Pass Filter for 27Mhz guest2 · September 24, 2021, 09:22:01 pm Here's a quick look at a "BPF" for the 11mtr band. This particular Band Pass Filter was built out of necessity for the current W... 1 Replies · 3197 Views Started by guest2	1 Replies 3197 Views	September 29, 2021, 11:32:03 pm by rob
BLF245 30W Broadcast Amplifier BLF245 30W Broadcast Amplifier ZoZo · June 16, 2024, 10:09:54 am Hi everyone, heres a FM Broadcast amplifier board designed a few years ago now. Its now a discountinued project, so free for eve... 5 Replies · 9006 Views Started by ZoZo	5 Replies 9006 Views	September 09, 2024, 01:15:29 am by eye102
Chinese Rigs Chinese Rigs Steve West · November 25, 2025, 06:58:32 am I've seen one of these on a spectrum analyser with my own eyes. Sprogs galore!Recently found this interesting video and it seems... 5 Replies · 3874 Views Started by Steve West	5 Replies 3874 Views	February 10, 2026, 02:33:41 am by Albert H
CraneFly LPAM Transmitter CraneFly LPAM Transmitter ZoZo · March 29, 2025, 07:35:19 am Below is a now obsolete PCB design for a simple AM Medium Wave Transmitter, ideally design to work at the upper region of MW in ... 2 Replies · 6429 Views Started by ZoZo	2 Replies 6429 Views	July 08, 2025, 06:52:37 pm by MonTaylor
Does anyone know how to download from here Does anyone know how to download from here fmradiotuner1 · December 18, 2025, 09:44:19 am Does anyone know how to download from hereI would like to DL or torrent this but really dont get it.https://system18.net/2025/12... 6 Replies · 2999 Views Started by fmradiotuner1	6 Replies 2999 Views	December 28, 2025, 09:40:15 am by Radioclick1fm
FT100 11m ('wideband') mod FT100 11m ('wideband') mod rob · September 18, 2021, 09:19:28 pm The details for modding the Yaesu FT100 to include 11m are readily available on the net, with the mod details having being poste... 0 Replies · 1983 Views Started by rob	0 Replies 1983 Views	September 18, 2021, 09:19:28 pm by rob
Full Sinus Build Full Sinus Build MonTaylor · June 02, 2025, 02:50:17 pm Here is a full sinus build which consist of a limiter, RDS and a 1w PLL driver 8 Replies · 11719 Views Started by MonTaylor	8 Replies 11719 Views	November 16, 2025, 08:59:59 pm by Mirage
hardware silence detector . hardware silence detector . Radioclick1fm · December 28, 2025, 09:42:04 am good schematic if , anyone is going to make a pcb , please share it .i would like to try , Honestly a freind long time make me p... 1 Replies · 3987 Views Started by Radioclick1fm	1 Replies 3987 Views	January 03, 2026, 09:29:39 pm by Albert H
Home Made Dummy Load Home Made Dummy Load AM081 · September 12, 2021, 04:52:21 pm There comes a time when when we're all going to need a dummy load at some point. The easiest option for most is to just simple b... 5 Replies · 7607 Views Started by AM081	5 Replies 7607 Views	November 06, 2025, 01:18:29 am by RIGMO
ic microcontroller Datasheets ic microcontroller Datasheets Dave · June 08, 2024, 12:10:49 am Place to upload data sheets for ic microcontrollers 0 Replies · 3471 Views Started by Dave	0 Replies 3471 Views	June 08, 2024, 12:10:49 am by Dave
jvok's Sleazy Listening Stereo Coder jvok's Sleazy Listening Stereo Coder jvok · November 17, 2025, 06:36:37 pm Looks like all the info on this has been lost after Radionecks went down. I even checked Wayback Machine but it didn't archive t... 10 Replies · 5736 Views Started by jvok	10 Replies 5736 Views	February 02, 2026, 12:07:08 am by Albert H
Kyle Drake - LPAM Handbook - PDF Download Kyle Drake - LPAM Handbook - PDF Download ZoZo · November 26, 2025, 01:07:25 pm Kyle Drakes - Low Power AM Broadcast Handbook which might be interesting to some. It gives some basic theory and simply designs ... 2 Replies · 874 Views Started by ZoZo	2 Replies 874 Views	July 10, 2026, 01:16:04 pm by Schmellenschmellen
MC145151P2 Low Phase Noise MC145151P2 Low Phase Noise RIGMO · November 18, 2025, 09:12:56 pm HIQuestion for all sopecialy for Alber HHow To achive speed and stability do anyone heave good solution with outpus φR, φV Phase... 1 Replies · 1336 Views Started by RIGMO	1 Replies 1336 Views	February 02, 2026, 12:16:59 am by Albert H
MW sufficient ground ? MW sufficient ground ? Schmellenschmellen · July 11, 2026, 12:12:34 pm I think about a dirt cheap LPAM TX ground. Does anyone know whether a bit of old CB antenna piece of say 80cms of aluminiumtube ... 4 Replies · 116 Views Started by Schmellenschmellen	4 Replies 116 Views	July 18, 2026, 08:29:26 pm by Schmellenschmellen
nrg 40 amp nrg 40 amp MonTaylor · July 05, 2024, 07:31:56 am Hello Radio Builders is there any checks i can do on this before i put in the BLW 60? i did run power to it like it is a saw a l... 2 Replies · 5948 Views Started by MonTaylor	2 Replies 5948 Views	July 05, 2024, 08:09:07 am by MonTaylor
NRG FOUNDER (veronika) Stephen J Moss NRG FOUNDER (veronika) Stephen J Moss RIGMO · December 09, 2025, 08:50:24 am like everything today, capitalism carries on today. the only generator that is resistant to deviation is the seesaw used by Vero... 0 Replies · 864 Views Started by RIGMO	0 Replies 864 Views	December 09, 2025, 08:50:24 am by RIGMO
NRG PRO IV NRG PRO IV ZoZo · November 08, 2025, 09:41:48 am Here is the NRG PRO IV pcb. This version has only had a minor rework to the mounting holes and the tracing for one track in the ... 7 Replies · 3389 Views Started by ZoZo	7 Replies 3389 Views	November 17, 2025, 07:34:14 am by MonTaylor
PCS must be the best PLL rig people now PCS must be the best PLL rig people now Schmellenschmellen · December 04, 2025, 04:36:01 pm I do not need much in the way of radio kit myself as I don't really TX. Mainly listening here.But they seem to have amazing PLL'... 16 Replies · 8097 Views Started by Schmellenschmellen « 1 2 »	16 Replies 8097 Views	January 09, 2026, 10:44:44 am by MonTaylor
Pi linking system Pi linking system MonTaylor · March 11, 2026, 08:05:03 am here is my pi linking system. the TX is a rpi3b with a usb wifi dongle and a usb sound card plugged in. the software used to con... 0 Replies · 1123 Views Started by MonTaylor	0 Replies 1123 Views	March 11, 2026, 08:05:03 am by MonTaylor
RDS PROJECT 1 RDS PROJECT 1 RIGMO · November 18, 2025, 07:11:31 pm IS posible Build one as on PDF document https://www.youtube.com/watch?v=zWBzTjaiCIM 3 Replies · 2561 Views Started by RIGMO	3 Replies 2561 Views	November 22, 2025, 09:17:48 pm by Radioclick1fm
RDS PROJECT 2 RDS PROJECT 2 RIGMO · November 18, 2025, 10:02:45 pm RDS project 2 http://www.g.laroche.free.fr/english/hardware/RDS_USB_ATmega32.html# 0 Replies · 2403 Views Started by RIGMO	0 Replies 2403 Views	November 18, 2025, 10:02:45 pm by RIGMO

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