Search found 167 matches

by F1CXG
Thu Jan 30, 2020 7:39 am
Forum: Off topic
Topic: Modification of the Radioditty charger with "TP5100" card at $ 2.
Replies: 79
Views: 61126

Re: Modification of the Radioditty charger with "TP5100" card at $ 2.

And here is the aspect after resumption of some welds with Photoshop :mrgreen:

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Image
by F1CXG
Thu Jan 30, 2020 6:44 am
Forum: Off topic
Topic: Modification of the Radioditty charger with "TP5100" card at $ 2.
Replies: 79
Views: 61126

Re: Modification of the Radioditty charger with "TP5100" card at $ 2.

Diagram modified for a useful use of the diode in "freewheeling"
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SCH2.jpg
SCH2.jpg (100.94 KiB) Viewed 5339 times
by F1CXG
Wed Jan 29, 2020 9:43 pm
Forum: Off topic
Topic: Modification of the Radioditty charger with "TP5100" card at $ 2.
Replies: 79
Views: 61126

Re: Modification of the Radioditty charger with "TP5100" card at $ 2.

Hi Roger, Just seen on another assembly, useful questionable, but not expensive and easier to weld in parallel a small capacitor with short lead (10nF) :mrgreen: This small charger module works much better than the original card, faster charging, more resistant to HF from the GD77 transmitting on th...
by F1CXG
Wed Jan 29, 2020 4:57 pm
Forum: Off topic
Topic: Modification of the Radioditty charger with "TP5100" card at $ 2.
Replies: 79
Views: 61126

Re: Modification of the Radioditty charger with "TP5100" card at $ 2.

Here is a diagram handmade quickly to clarify
the position of the added elements ;)
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Image
by F1CXG
Wed Jan 29, 2020 3:05 pm
Forum: Off topic
Topic: Modification of the Radioditty charger with "TP5100" card at $ 2.
Replies: 79
Views: 61126

Re: Modification of the Radioditty charger with "TP5100" card at $ 2.

Yes Red during charge and blue at end of charge or open... ;)
by F1CXG
Wed Jan 29, 2020 2:33 pm
Forum: Off topic
Topic: Modification of the Radioditty charger with "TP5100" card at $ 2.
Replies: 79
Views: 61126

Modification of the Radioditty charger with "TP5100" card at $ 2.

Modification of the Radioditty charger with a $2 "TP5100" lithium-ion battery charger module. I recovered the 12V socket and the input choke of the original charger. I glued the plug with cyanoacrilate glue, added some DC and RF filtering components. The output voltage is 8.42V and the leds of the c...
by F1CXG
Wed Jan 29, 2020 11:51 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 29th Jan
Replies: 76
Views: 36231

Re: Update 29th Jan

Always better and better !!!! 8-)
by F1CXG
Tue Jan 28, 2020 7:42 pm
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Experimental Contacts cache system
Replies: 28
Views: 13584

Re: Experimental Contacts cache system

I just noticed that one of my GD77 which had audio only if the Beeps were set to + 3dB works normally now, it is following one of the last versions but which one?
I am currently using the "opengd77_202001281728.sgl" and all is Ok !!!
by F1CXG
Tue Jan 28, 2020 10:25 am
Forum: Off topic
Topic: keys and buttons
Replies: 62
Views: 41086

Re: keys and buttons

Ok ;)
by F1CXG
Tue Jan 28, 2020 10:15 am
Forum: Off topic
Topic: keys and buttons
Replies: 62
Views: 41086

Re: keys and buttons

(lapin compris ?) That's what I've been doing from the beginning
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