Uploads by M0YDH
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This special page shows all uploaded files.
| Date | Name | Thumbnail | Size | Description | Versions |
|---|---|---|---|---|---|
| 17:29, 28 February 2023 | RxTxChangeoverV1.ino (file) |  |
6 KB | Sketch for Nano V3 for G8TA Rx/Tx Changeover controller by Ron M0RNW | 1 |
| 17:23, 28 February 2023 | G8TA Portsdown RxTx Changeover -1.jpg (file) |  |
190 KB | Assembled changeover controller | 1 |
| 21:29, 27 February 2023 | RxTx-Changeover.pdf revised 20230207.pdf (file) |  |
97 KB | M0RNW changeover controller schematic CQ-TV 279 | 1 |
| 21:27, 27 February 2023 | Rx-Tx Changeover Gerbers.zip (file) | |
258 KB | Gerbers for the M0RNW Rx-Tx changeover controller in CQ-TV 279 | 1 |
| 21:20, 27 February 2023 | HF3 relay board gerbers.zip (file) | |
28 KB | Gerbers for SPDT relay PCB by G0MJW | 1 |
| 21:18, 27 February 2023 | HF3 Relay board.JPG (file) |  |
52 KB | KiCAD image of G0MJW design PCB | 1 |
| 19:22, 8 December 2022 | Portsdown 3 Front Panel.zip (file) | |
2.81 MB | Here is a .DXF file and a .stp model to load into your CAD software. It is for a 19 inch rack 3U front panel for a Portsdown 2019 with 7" Screen mounted in a G4XAT bezel. Probably the engraving will fail to load. It will import into Front Panel Designer from Schaeffer. STEP files are neutral format CAD models so ought to load into any 3D CAD software. | 1 |
| 12:55, 12 August 2022 | P2020 M0YDH 04.jpg (file) |  |
143 KB | OTHER SIDE OF P2018 CARD MOUNTS THE RF SWITCHES AND ATTENUATOR. A 25 WAY D SOCKET MAKES THE OFF BOARD CONNECTIONS TO THE PI BREAKOUT BOARD | 1 |
| 12:53, 12 August 2022 | P2020 M0YDH 03.jpg (file) |  |
185 KB | PORTSDOWN 2018 MAIN CIRCUIT CARDS MOUNTED ON A PLAIN PCB FOR FITTING IN A 3U 19" RACK | 1 |
| 12:52, 12 August 2022 | P2020 M0YDH 02.jpg (file) |  |
196 KB | PORTSDOWN 2020 UNDER CONSTRUCTION IN A 3 U 19" RACK CASE 2 WAY SWITCH, ATTENUATOR, 4 WAY SWITCH | 1 |
| 12:50, 12 August 2022 | P2020 M0YDH 01.jpg (file) |  |
620 KB | PORTSDOWN 2020 UNDER CONSTRUCTION IN A 3 U 19" RACK CASE | 1 |
| 12:49, 12 August 2022 | M0YDH Upconverter.jpg (file) |  |
210 KB | 71MHz UPCONVERTER LAID OUT ON A CARD | 1 |
| 13:31, 20 June 2021 | 1255 Interdigital filter 3.jpg (file) |  |
229 KB | M0YDH build of W6PQL filter in a die cast box. Cables and coupler only were at -9.75dBm | 1 |
| 13:30, 20 June 2021 | 1255 Interdigital filter 2.jpg (file) |  |
294 KB | M0YDH build of W6PQL filter in a die cast box | 1 |
| 13:29, 20 June 2021 | 1255 Interdigital filter 1.jpg (file) |  |
253 KB | M0YDH build of W6PQL filter in a die cast box | 1 |
| 17:47, 1 February 2021 | Video source m0ydh2.jpeg (file) |  |
205 KB | Tripod mounted video source with output displayed on monitor | 1 |
| 17:44, 1 February 2021 | Video source m0ydh1.jpeg (file) |  |
183 KB | Die cast box assembly of BATC video source | 1 |
| 18:39, 13 January 2020 | 4m LPF trace.jpg (file) |  |
271 KB | Today I made a low pass filter for 71 MHz per @G4GUO design in CQ-TV 260. It measured well. Ref level was -14 dBm with a 10dB PAD. So -2dBm loss. I haven't mastered normalizing the tracking generator yet | 1 |
| 18:37, 13 January 2020 | 4m LPF.jpg (file) |  |
704 KB | G4GUO 4m low pass filter design built by David M0YDH | 1 |
| 18:47, 31 December 2019 | IPTV server web page at completion.PNG (file) |  |
32 KB | The web page of the HDMI sender firmware after modification with the IPTV server firmware. | 1 |
| 18:42, 31 December 2019 | PuTTy for HDMI sender reset.PNG (file) |  |
23 KB | 1 | |
| 19:58, 16 November 2019 | Mini-kits amp pcb on Pentium P4 style heatsink and fan.jpg (file) |  |
296 KB | 437 MHz amplifier is shown nearing end of construction at M0YDH. Mini-kits UHF amp kit is mounted on the ex-computer heat sink. Their low-pass filter is inside the PCB box with the detector for the BATC bar graph display on top. | 1 |
| 19:42, 29 October 2019 | LongMynd 1st pictures.jpg (file) |  |
2.77 MB | First Pi Cam TV received across the shack using the Long Mynd receiver software | 1 |
| 17:42, 6 October 2019 | 20191002 PICKIT3 FITTED TO PROJECT BOARD.jpg (file) |  |
160 KB | Picture shows the orientation of the board for in-circuit programming with a Pickit3 | 1 |
| 20:20, 17 September 2019 | M0YDH TERRESTRIAL RX MENU.jpg (file) |  |
173 KB | Terrestrial Rx menu - Portsdown 2019 by M0YDH | 1 |
| 20:14, 17 September 2019 | M0YDH QO-100 Rx menu.jpg (file) |  |
158 KB | QO-100 Rx Menu -Portsdown 2019 by M0YDH | 1 |
| 20:31, 13 April 2019 | 20190413 163955 (Small).jpg (file) | .jpg) |
98 KB | Rear Panel - Portsdown 2019 by M0YDH | 1 |
| 20:29, 13 April 2019 | 20190413 M0YDH (Small).jpg (file) | .jpg) |
59 KB | A Portsdown 2019 DATV transmitter | 1 |
| 20:27, 13 April 2019 | 20190413 164004 (Small).jpg (file) | .jpg) |
143 KB | A Portdown 2019 Transmitter by M0YDH - 8 way RF switch | 1 |
| 20:26, 13 April 2019 | 20190413 180639 (Small).jpg (file) | .jpg) |
120 KB | A Portsdown 2019 transmitter by M0YDH | 1 |
| 20:22, 13 April 2019 | 20190413 180629 (Small).jpg (file) | .jpg) |
104 KB | Portsdown 2019 with 3.5" screen by M0YDH | 1 |
| 12:41, 2 February 2019 | 20190201 182818-1008x756.jpg (file) |  |
182 KB | Underside of V2.3 8 band RF switch - M0YDH | 1 |
| 12:40, 2 February 2019 | 20190201 182759-1008x756.jpg (file) |  |
196 KB | 8 Band RF Switch V2.3 assembled by M0YDH | 1 |
| 18:47, 30 January 2019 | 8 BAND RF SWITCH V2.2 PARTS.xls (file) | |
43 KB | 8 Band RF switch parts lists for Portsdown filter modulator V2.2 and alternatively Lime Mini SDR - V2.3 per CQ-TV262 | 1 |
| 21:52, 18 November 2018 | Cleeve Common to Titterstone Clee Hill.JPG (file) |  |
146 KB | Screenshot of Microwave Path Profile by G0MJW | 1 |
| 18:48, 7 May 2018 | DB6NT 23cm low pass filter.jpg (file) |  |
65 KB | Michael Kühner's PCB number 58 is a LPF and coupler for 23cm band | 1 |
| 19:52, 30 November 2017 | 20171126 GM8OTI BPF 23cm (Small).jpg (file) | .jpg) |
76 KB | 23 cm bandpass filter to design by John GM8OTI | 1 |
| 21:48, 17 October 2017 | PE4032 DIP & SOLDER BLOB Settings.JPG (file) |  |
295 KB | Right way up for reading | 2 |
| 19:05, 14 September 2017 | 20170908 145937 M0HMO power meter.jpg (file) |  |
266 KB | Power Meter designed by Heather M0HMO for the GQRP 2017 Buildathon is shown here displaying the "20watts" FM setting of a FT857D into its high power port. The Arduino Uno computer controlled meter reads dBm, mW and W on all amateur bands 160m to 70cm i... | 1 |
| 18:38, 14 September 2017 | 20170914 QRP Labs 4m and 2m LPF.jpg (file) |  |
114 KB | Low pass filter kits from QRP-Labs built by M0YDH for Portsdown TX use. 4m on left and 2m on right | 1 |
| 18:27, 14 September 2017 | 20170914 CQTV250 2m BPF M0YDH.jpg (file) |  |
216 KB | 2m Band Pass filter built by David M0YDH to the instructions in CQTV250. Red coupling wire by Noel G8GTZ at CAT17 workshop gives the correct performance! | 1 |
| 17:56, 14 September 2017 | 20170910 103215 G8GKQ TXCR 6cm AT CAT17.jpg (file) |  |
363 KB | G8GKQ 6cm Transceiver - receiver unit on left & transmitter with fan on the right. | 1 |
