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- 14:07, 12 August 2022 diff hist +15 m 71 MHz →Antennas
- 14:03, 12 August 2022 diff hist +105 71 MHz →Antennas: 6m url too
- 14:02, 12 August 2022 diff hist -20 71 MHz →Antennas: revised URL
- 13:46, 12 August 2022 diff hist +602 71 MHz →Receiver: M0YDH upconverter number 2
- 13:31, 12 August 2022 diff hist +177 m Portsdown 2018 →Portsdown 2018 User guide current
- 13:29, 12 August 2022 diff hist +169 m Portsdown 2018 P2018 works reliably
- 13:21, 12 August 2022 diff hist +35 Assembling Portsdown →Mechanical Design
- 13:20, 12 August 2022 diff hist +644 Assembling Portsdown →Mechanical Design: P2018 on 2 sides of a PCB
- 13:01, 12 August 2022 diff hist +404 Assembling Portsdown →Mechanical Design: 3U 19 inch rack case
- 12:55, 12 August 2022 diff hist +152 N File:P2020 M0YDH 04.jpg 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 current
- 12:53, 12 August 2022 diff hist +99 N File:P2020 M0YDH 03.jpg PORTSDOWN 2018 MAIN CIRCUIT CARDS MOUNTED ON A PLAIN PCB FOR FITTING IN A 3U 19" RACK current
- 12:52, 12 August 2022 diff hist +110 N File:P2020 M0YDH 02.jpg PORTSDOWN 2020 UNDER CONSTRUCTION IN A 3 U 19" RACK CASE 2 WAY SWITCH, ATTENUATOR, 4 WAY SWITCH current
- 12:50, 12 August 2022 diff hist +70 N File:P2020 M0YDH 01.jpg PORTSDOWN 2020 UNDER CONSTRUCTION IN A 3 U 19" RACK CASE current
- 12:49, 12 August 2022 diff hist +50 N File:M0YDH Upconverter.jpg 71MHz UPCONVERTER LAID OUT ON A CARD current
- 17:56, 14 October 2021 diff hist +148 m QO100 DATV Users m0ydh & g8vzt added
- 18:05, 29 September 2021 diff hist +73 m PE4302 current
- 18:02, 29 September 2021 diff hist +46 m PE4302
- 18:00, 29 September 2021 diff hist +242 PE4302 Old versions of MPLAB IDE
- 11:55, 26 June 2021 diff hist +173 m 23cms filters →3 and 5 pole filters: brass screws current
- 16:51, 22 June 2021 diff hist +25 m Portsdown 4 →Hardware build
- 16:49, 22 June 2021 diff hist +124 Portsdown 2020 →Hardware build: shortcut to 2019 hardware page current
- 14:00, 20 June 2021 diff hist +107 m 23cms filters →3 and 5 pole filters
- 13:58, 20 June 2021 diff hist +158 m 23cms filters →3 and 5 pole filters
- 13:50, 20 June 2021 diff hist 0 23cms filters →3 and 5 pole filters
- 13:49, 20 June 2021 diff hist -5 23cms filters →3 and 5 pole filters
- 13:47, 20 June 2021 diff hist +633 23cms filters 5 pole filter
- 13:31, 20 June 2021 diff hist +101 N File:1255 Interdigital filter 3.jpg M0YDH build of W6PQL filter in a die cast box. Cables and coupler only were at -9.75dBm current
- 13:30, 20 June 2021 diff hist +59 N File:1255 Interdigital filter 2.jpg M0YDH build of W6PQL filter in a die cast box current
- 13:29, 20 June 2021 diff hist +59 N File:1255 Interdigital filter 1.jpg M0YDH build of W6PQL filter in a die cast box current
- 17:38, 17 April 2021 diff hist +360 70cms filters RBP-440 current
- 17:32, 17 April 2021 diff hist +369 146 MHz filters RBP-140 current
- 17:22, 17 April 2021 diff hist +255 70MHz filters RBP-75 current
- 17:12, 17 April 2021 diff hist +31 m MiniTioune →Hardware overview
- 17:11, 17 April 2021 diff hist +69 m MiniTioune →Hardware overview
- 17:08, 17 April 2021 diff hist +208 m MiniTioune →Hardware overview: CQ-TV 269
- 17:02, 17 April 2021 diff hist +3 m MiniTiouner hardware Version 1 →Serit NIM Adapter card current
- 14:58, 17 April 2021 diff hist +97 m Serit LNB DC supply →LNB power supply with current limit for MiniTiouner current
- 14:56, 17 April 2021 diff hist +121 Serit LNB DC supply →LNB power supply with current limit for MiniTiouner: low voltage fault condition
- 12:07, 5 April 2021 diff hist +155 Willow components breakout card Portsdown 4 current
- 11:50, 5 April 2021 diff hist -16 Portsdown 4 GPIO Connections →List of GPIO connections: SR Pins
- 18:22, 14 February 2021 diff hist +184 m Portsdown 4 GPIO Connections →GPIO Connections for the Portsdown 4: 2 way RF switch
- 22:12, 8 February 2021 diff hist +2 m Portsdown 4 GPIO Connections →GPIO Connections for the Portsdown 4
- 22:04, 8 February 2021 diff hist +107 Portsdown 4 GPIO Connections →GPIO Connections for the Portsdown 4: link to gp io pcb page
- 21:54, 8 February 2021 diff hist +51 m Portsdown 4 GPIO Connections →GPIO Connections for the Portsdown 4
- 21:50, 8 February 2021 diff hist +75 Portsdown 4 GPIO Connections →RPi 4 GPIO pin out
- 21:45, 8 February 2021 diff hist +504 m Portsdown 4 GPIO Connections →GPIO Connections for the Portsdown 4: breakout board terminal block notes
- 18:05, 1 February 2021 diff hist +380 BATC Video Source Assembly link and 2 photos
- 17:47, 1 February 2021 diff hist +74 N File:Video source m0ydh2.jpeg Tripod mounted video source with output displayed on monitor current
- 17:44, 1 February 2021 diff hist +56 N File:Video source m0ydh1.jpeg Die cast box assembly of BATC video source current
- 16:29, 19 December 2020 diff hist +127 Portsdown 4 →Portsdown 4 GPIO connections: attenuator LE
- 18:59, 28 March 2020 diff hist +131 m Jetson Nano →Preparing the LKV373A HDMI Device: OpenTechLabs video
- 18:27, 15 January 2020 diff hist +377 m 70MHz filters BPF
- 18:11, 15 January 2020 diff hist +125 m 71 MHz →Equipment for 71MHz DATV: filters link to page
- 18:43, 13 January 2020 diff hist +187 70MHz filters LPF filter pics
- 18:39, 13 January 2020 diff hist +218 N File:4m LPF trace.jpg 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 current
- 18:37, 13 January 2020 diff hist +66 N File:4m LPF.jpg G4GUO 4m low pass filter design built by David M0YDH current
- 18:36, 13 January 2020 diff hist +2 70MHz filters
- 18:17, 13 January 2020 diff hist +831 71 MHz →Equipment for 71MHz DATV
- 18:03, 9 January 2020 diff hist +132 m RPi Test Card link to article current
- 18:53, 31 December 2019 diff hist +368 Jetson Nano →Preparing the LKV373A HDMI Device: putty settings for factory reset / webpage of IPTV server at completion.
- 18:47, 31 December 2019 diff hist +104 N File:IPTV server web page at completion.PNG The web page of the HDMI sender firmware after modification with the IPTV server firmware. current
- 18:42, 31 December 2019 diff hist 0 N File:PuTTy for HDMI sender reset.PNG current
- 13:27, 22 November 2019 diff hist +92 71 MHz →Receiver: video of upconverter in action
- 20:03, 16 November 2019 diff hist -1 437 MHz current
- 20:01, 16 November 2019 diff hist +4 437 MHz
- 20:01, 16 November 2019 diff hist +6 437 MHz
- 20:00, 16 November 2019 diff hist +67 437 MHz
- 19:58, 16 November 2019 diff hist +242 N File:Mini-kits amp pcb on Pentium P4 style heatsink and fan.jpg 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. current
- 19:24, 16 November 2019 diff hist +1,296 N 437 MHz 70CM AMPLIFIERS OPENING TEXT
- 18:32, 16 November 2019 diff hist +95 m 70MHz filters
- 18:29, 16 November 2019 diff hist +524 70MHz filters Further 4m filters
- 18:15, 16 November 2019 diff hist +273 Filters →Interdigital filters: VK3UM software new location current
- 20:29, 29 October 2019 diff hist +94 m The Portsdown Receiver
- 20:04, 29 October 2019 diff hist +79 m Portsdown 2019 →Advanced features: receiver
- 19:59, 29 October 2019 diff hist -6 m The Portsdown Receiver
- 19:56, 29 October 2019 diff hist +1 The Portsdown Receiver
- 19:56, 29 October 2019 diff hist +141 m The Portsdown Receiver
- 19:48, 29 October 2019 diff hist +181 The Portsdown Receiver Add photo of first received TV
- 19:42, 29 October 2019 diff hist +93 N File:LongMynd 1st pictures.jpg First Pi Cam TV received across the shack using the Long Mynd receiver software current
- 18:02, 28 October 2019 diff hist +307 Portsdown Displays →Recommended Display 2 - Waveshare 3.5 inch Type A: bloody things fail so you have to buy two of them
- 17:52, 6 October 2019 diff hist +75 ADF435x PIC →Using a Chinese Pickit 3 current
- 17:50, 6 October 2019 diff hist -1 ADF435x PIC →Using a Chinese Pickit 3
- 17:49, 6 October 2019 diff hist +178 ADF435x PIC PICKIT3 orientation
- 17:44, 6 October 2019 diff hist +51 ADF435x PIC →Using a Chinese Pickit 3
- 17:42, 6 October 2019 diff hist +98 N File:20191002 PICKIT3 FITTED TO PROJECT BOARD.jpg Picture shows the orientation of the board for in-circuit programming with a Pickit3 current
- 19:07, 21 September 2019 diff hist +50 m 71 MHz
- 20:33, 17 September 2019 diff hist +341 The Portsdown Receiver
- 20:20, 17 September 2019 diff hist +59 N File:M0YDH TERRESTRIAL RX MENU.jpg Terrestrial Rx menu - Portsdown 2019 by M0YDH current
- 20:17, 17 September 2019 diff hist +30 m The Portsdown Receiver QO-100 menu
- 20:14, 17 September 2019 diff hist +53 N File:M0YDH QO-100 Rx menu.jpg QO-100 Rx Menu -Portsdown 2019 by M0YDH current
- 19:21, 1 May 2019 diff hist +376 71 MHz →Receiver: EZ samples
- 11:33, 23 April 2019 diff hist +265 71 MHz →Receiver: mini-circuits sources
- 20:46, 13 April 2019 diff hist +111 Es'hail-2 LNBs and Antennaes →Suitable 25 MHz Reference current
- 20:31, 13 April 2019 diff hist +36 N File:20190413 163955 (Small).jpg Rear Panel - Portsdown 2019 by M0YDH current
- 20:29, 13 April 2019 diff hist +33 N File:20190413 M0YDH (Small).jpg A Portsdown 2019 DATV transmitter current
- 20:27, 13 April 2019 diff hist +54 N File:20190413 164004 (Small).jpg A Portdown 2019 Transmitter by M0YDH - 8 way RF switch current
- 20:26, 13 April 2019 diff hist +37 N File:20190413 180639 (Small).jpg A Portsdown 2019 transmitter by M0YDH current
- 20:22, 13 April 2019 diff hist +40 N File:20190413 180629 (Small).jpg Portsdown 2019 with 3.5" screen by M0YDH current
- 15:35, 3 February 2019 diff hist +391 23cms ATV →23cms FM ATV equipment: 3 other makes of FM transmitter current
- 13:26, 2 February 2019 diff hist +103 Using LimeSDR with Portsdown →WARNING - High Power Output During Calibration Before Transmit: video