SunSDR2DX

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Daniel Wee
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Joined: Wed 25 Feb 25 2009 8:00 pm

SunSDR2DX

Post by Daniel Wee »

SunSDR2DX to SPE 1.3K-FA cable

In our cable the PC817 optocoupler is flipped upside down to get the pins in a matching orientation. The pins have been bent up. The SPE supposedly requires only a 2mA current rating so the PC817 should be okay (nominal 5mA). There is a 620-ohm resistor in series with the driver LED to drop the forward current to 20mA and forward voltage to 1.2V off a 13.8V drive level.
Attachments
User.Manual.EXPERT.1.3K-FA-EN-rev.3.0.Third.Series.pdf
(3.3 MiB) Downloaded 30 times
PC817.pdf
(87.36 KiB) Downloaded 32 times
SunSDR2_DX_User_Manual_ENG.pdf
(7.06 MiB) Downloaded 28 times
BAND DATA cable.png
BAND DATA cable.png (31.24 KiB) Viewed 623 times
Daniel Wee
Site Admin
Posts: 2441
Joined: Wed 25 Feb 25 2009 8:00 pm

Re: SunSDR2DX

Post by Daniel Wee »

TCI to CAT (ICOM, Yaesu or Kenwood) bridge using ESP32

https://iw7dmh.jimdofree.com/sunsdr2-pr ... libraries/
Daniel Wee
Site Admin
Posts: 2441
Joined: Wed 25 Feb 25 2009 8:00 pm

Re: SunSDR2DX

Post by Daniel Wee »

Dealing with crackling sounds in the audio:-

https://ttcshelbyville.wordpress.com/20 ... yEpnFANHeo
Daniel Wee
Site Admin
Posts: 2441
Joined: Wed 25 Feb 25 2009 8:00 pm

Re: SunSDR2DX

Post by Daniel Wee »

Okay yes!!!! The details for making the TCI bridge:-

1. Using the OLIMEX ESP32-PoE-ISO board
2. R37 needs to be removed from the board
3. The data input from the SPI to pin 36 of the board is clamped down with 1x LED and 2x 1N4148 types, all in series, giving a clamp of 1.7+0.6+0.6 = 2.9V roughly
4. After the clamp the signal is fed via a 1k resistor to pin 36
5. Output from pin 4 to SPE RXD is direct, no protection required
6. In the TCI serial initialization, you need to specify INVERT (true for the last parameter)
7. The remote activation will require a 12V-ish level but otherwise works
Daniel Wee
Site Admin
Posts: 2441
Joined: Wed 25 Feb 25 2009 8:00 pm

Re: SunSDR2DX

Post by Daniel Wee »

Code: Select all

GND	Black
TX TTL	Blue
RX TTL	White
RLY	Brown
ALC	Green
Remote	Red

SunSDR	SPE	Board	ESP32
Brown	Brown
Black		GND
	Black	GND
	White		U1TXD (GPIO4)
	Blue LED	U1RXD (GPIO36)
ALC	Green
		GND	GND (3)
		Opto1	GPIO5
	Red	Opto4
Red		Opto3 (1k)
Daniel Wee
Site Admin
Posts: 2441
Joined: Wed 25 Feb 25 2009 8:00 pm

Re: SunSDR2DX

Post by Daniel Wee »

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throttling.jpg
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