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- 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
- 12:48, 2 February 2019 diff hist +1 8-Band RF Output Switch →Version 2 PCBs
- 12:48, 2 February 2019 diff hist +89 m 8-Band RF Output Switch →Version 2 PCBs
- 12:45, 2 February 2019 diff hist +94 8-Band RF Output Switch →Version 2 PCBs: V2.3 assembled board pictures
- 12:41, 2 February 2019 diff hist +42 N File:20190201 182818-1008x756.jpg Underside of V2.3 8 band RF switch - M0YDH current
- 12:40, 2 February 2019 diff hist +40 N File:20190201 182759-1008x756.jpg 8 Band RF Switch V2.3 assembled by M0YDH current
- 18:42, 31 January 2019 diff hist +14 m Output Attenuator →RF Connections: or Lime SDR
- 19:11, 30 January 2019 diff hist +303 8-Band RF Output Switch →Version 2 PCBs
- 19:06, 30 January 2019 diff hist +76 8-Band RF Output Switch →Version 1 PCBs: New Parts List
- 18:47, 30 January 2019 diff hist +116 N File:8 BAND RF SWITCH V2.2 PARTS.xls 8 Band RF switch parts lists for Portsdown filter modulator V2.2 and alternatively Lime Mini SDR - V2.3 per CQ-TV262 current
- 21:55, 18 November 2018 diff hist +135 Mapping tools →Radio link and path software
- 21:52, 18 November 2018 diff hist +45 N File:Cleeve Common to Titterstone Clee Hill.JPG Screenshot of Microwave Path Profile by G0MJW current
- 21:34, 18 November 2018 diff hist +938 Mapping tools →Radio link and path software: G0MJW's path profile
- 18:19, 22 May 2018 diff hist +802 Mapping tools →Finding line of sight paths: Radio Mobile and MicroDEM
- 19:19, 7 May 2018 diff hist +34 m 23cms filters DB6NT LPF
- 19:11, 7 May 2018 diff hist +952 23cms filters DB6NT PCB 58 low pass filter
- 18:48, 7 May 2018 diff hist +66 N File:DB6NT 23cm low pass filter.jpg Michael Kühner's PCB number 58 is a LPF and coupler for 23cm band current
- 18:20, 21 February 2018 diff hist +1,954 N Lean DVB receiver Reinstate the text (from Google search cached pages) to enable users to find CQTV 252 article
- 18:13, 21 February 2018 diff hist +1,954 N Talk:Lean DVB receiver Reinstate the text (from Google search cached pages) to enable users to find CQTV 252 article current
- 21:55, 30 January 2018 diff hist +252 PTT and band switching →Tx Rx sequencer: TROPIC
- 21:46, 30 January 2018 diff hist +170 m Antennae changeover relays →Tx / Rx sequencing: TROPIC
- 12:07, 6 January 2018 diff hist +242 m PTT and band switching →Tx Rx sequencer: ADD link to video of device in operation
- 17:04, 5 December 2017 diff hist +325 m 23cms filters add photo of my version of BPF
- 19:52, 30 November 2017 diff hist +46 N File:20171126 GM8OTI BPF 23cm (Small).jpg 23 cm bandpass filter to design by John GM8OTI current
- 21:05, 18 October 2017 diff hist +108 m PE4302 add link to my film
- 21:56, 17 October 2017 diff hist +270 PE4302 attenuator preparation
- 21:48, 17 October 2017 diff hist 0 File:PE4032 DIP & SOLDER BLOB Settings.JPG M0YDH uploaded a new version of File:PE4032 DIP & SOLDER BLOB Settings.JPG current
- 14:28, 16 October 2017 diff hist +76 N File:PE4032 DIP & SOLDER BLOB Settings.JPG Attenuator switch and J solder pads for serial operation with the controller
- 07:34, 22 September 2017 diff hist +162 m Analog Video Output What's on Dave's Portsdown - hoping for a photo
- 07:29, 22 September 2017 diff hist +84 m Analog Video Output Refer to 5.6GHz FPV transmitter
- 18:37, 19 September 2017 diff hist +288 70cms filters →Simple inter-digital filter
- 18:20, 19 September 2017 diff hist +10 m 5.6 GHz →Activity hot spots
- 19:05, 14 September 2017 diff hist +288 N File:20170908 145937 M0HMO power meter.jpg 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... current
- 18:58, 14 September 2017 diff hist +312 N 70MHz filters 4m filter page
- 18:55, 14 September 2017 diff hist +18 m Filters →Filters for each band
- 18:53, 14 September 2017 diff hist +151 146 MHz filters
- 18:38, 14 September 2017 diff hist +98 N File:20170914 QRP Labs 4m and 2m LPF.jpg Low pass filter kits from QRP-Labs built by M0YDH for Portsdown TX use. 4m on left and 2m on right current
- 18:34, 14 September 2017 diff hist +262 146 MHz filters 2m BPF from CAT17 illustrated
- 18:27, 14 September 2017 diff hist +153 N File:20170914 CQTV250 2m BPF M0YDH.jpg 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! current
- 18:03, 14 September 2017 diff hist +283 5.6 GHz Pic of Crump transceiver detail at CAT17
- 17:56, 14 September 2017 diff hist +82 N File:20170910 103215 G8GKQ TXCR 6cm AT CAT17.jpg G8GKQ 6cm Transceiver - receiver unit on left & transmitter with fan on the right. current
- 17:55, 14 September 2017 diff hist +71 5.6 GHz
- 18:08, 11 September 2017 diff hist +107 m 146 MHz filters →Manufacturers of 144 - 148 MHz filters
- 18:03, 11 September 2017 diff hist +44 m 146 MHz filters →A simple DIY filter was originally published in the RSGB VHF manual and described in CQ-TV 250
- 22:03, 23 May 2017 diff hist +83 m Filter Modulator build Heatsink type
- 18:06, 21 January 2017 diff hist +394 m MiniTioune →Software Installation
- 17:40, 21 January 2017 diff hist -1 MiniTioune →Software Downloads
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