User contributions
15 April 2024
File:Cdf tone info.jpg
Configured tone information handwritten on the CD&F main board near the top center. Sequence 1 is to activate, sequence 2 is to deactivate.
File:Cdf rx closeup back.jpg
Closeup of the rear of the double conversion super heterodyne radio receiver circuitry in the CD&F. Mirrored to match Cdf_rx_closeup.jpg
File:Cdf rx closeup.jpg
Closeup of the double conversion super heterodyne radio receiver circuitry in the CD&F
File:Cdf bare mainboard back.jpg
Trevor229 uploaded a new version of File:Cdf bare mainboard back.jpg
File:Cdf bare mainboard back.jpg
Back of the CD&F mainboard. There is conformal coating on the back which makes it difficult to probe things. It can be removed with acetone or MEK.
File:Cdf bare mainboard.jpg
Bare mainboard of the CD&F. All cards removed for visibility.
File:Cdf back.jpg
Back of the enclosure, showing the integrated mounting holes.
File:Cdf info onboard.jpg
Info written near the bottom center of the mainboard. Shows FCC-ID, serial, receive frequency, input voltage, and ship date.
File:Cdf hinge side.jpg
Side of the enclosure with the hinge. The hinge cannot be removed from the door, but the door and hinge can be removed from the enclosure with three screws and nuts.
File:Cdf latch side.jpg
Side of the enclosure with latch. First flips out, then rotate the wing to loosen the clamp.
File:Cdf bottom.jpg
Bottom of the CD&F housing showing the conduit and vent holes as well as an unused SO-239 connector for replacing the whip antenna.
File:Cdf top.jpg
Top of the CD&F housing showing the antenna mount without the antenna
File:Cdf filters bottom.jpg
Bottom side of the CD&F tone filter modules. Mirrored to match the top side.
File:Cdf filters top.jpg
Top view of both CD&F tone decoder modules
File:Cdf xfmr sec.jpg
Secondary of the CD&F transformer
File:Cdf xfmr pri.jpg
Trevor229 uploaded a new version of File:Cdf xfmr pri.jpg
File:Cdf xfmr pri.jpg
Primary side of the CD&F transformer
File:Cdf terminals closeup.jpg
Closeup of the terminal block on the CD&F controller
File:Cdf front closed.jpg
CD&F with the front door closed
File:Cdf front open.jpg
CD&F controller with the front door open
9 March 2023
21 January 2023
20 January 2023
18 January 2023
DFM-17 Radiosonde
Typo of IC package on gallery caption fix
m+4
DFM-17 Radiosonde
Update some IC package formats
m+6
17 January 2023
DFM-17 Radiosonde
add dummy load mod and change images to gallery
m+746
File:Dfm 17 swd and resistors.jpg
no edit summary
16 January 2023
DFM-17 Radiosonde
Added more pictures, pinouts of sensor stalk, identified ICs, peripheral attachment pinouts
+1,005
File:Dfm back pcb no battery.jpg
no edit summary
File:Stalk pinout mapping.png
no edit summary
File:V719 and others removed.jpg
no edit summary
File:Sensor stalk pinout.jpg
Trevor229 uploaded a new version of File:Sensor stalk pinout.jpg
14 December 2022
DFM-17 Radiosonde
added mentioned 3rd party source
m+52
DFM-17 Radiosonde
Added additional photos, added some new information regarding MCU I/O
+758
File:Sensor stalk pinout.jpg
no edit summary
File:Label id speculaton.jpg
no edit summary
3 September 2022
9 August 2022
Apollo AL-A26 (Pager)
Reword some sections, add new info about hand programming procedure with pictures.
+3,878
File:Sticky pads.jpg
no edit summary
File:Pass word prompt.jpg
no edit summary
File:Pass screen.jpg
no edit summary
File:Modify password menu.jpg
no edit summary
File:Frequency menu.jpg
no edit summary
File:Contrast menu.jpg
no edit summary
File:Capcode menu.jpg
no edit summary
File:Baud menu.jpg
Trevor229 uploaded a new version of File:Baud menu.jpg
File:Baud menu.jpg
Baud menu for the AL-A26 pager