Search found 996 matches
- Mon 27 Dec 27 2021 12:54 pm
- Forum: General Discussions
- Topic: EFHW and transformers
- Replies: 5
- Views: 43605
Re: EFHW and transformers
Comparing a 2x FT240-43, 3x FT-240-52 and 3x FT240-52 auto SWR into a 2450ohm resistor.
Re: SunSDR2DX
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)
- Tue 14 Dec 14 2021 12:18 pm
- Forum: General Discussions
- Topic: EFHW and transformers
- Replies: 5
- Views: 43605
Re: EFHW and transformers
More tests with the 8010 with various configurations. EFHW8010-FT240-52-auto2.png EFHW8010-FT240-52-auto2-coil.png EFHW8010-FT240-52-auto2-noground.png EFHW8010-FT240-52-auto2-noground-elevated1.png EFHW8010-FT240-52-auto2-grounded-elevated1.png EFHW8010-FT240-52-noground-elevated1.png EFHW8010-FT24...
- Mon 13 Dec 13 2021 7:20 pm
- Forum: General Discussions
- Topic: EFHW and transformers
- Replies: 5
- Views: 43605
- Mon 13 Dec 13 2021 11:47 am
- Forum: General Discussions
- Topic: EFHW and transformers
- Replies: 5
- Views: 43605
EFHW and transformers
A comparison between the 49:1 transformers wound on FT240-43 (x1) and FT240-52 (x3).
Re: SunSDR2DX
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....
- Mon 15 Nov 15 2021 10:26 am
- Forum: Projects
- Topic: TCI to CAT bridge for SPE 1.3K-FA
- Replies: 1
- Views: 16120
- Mon 15 Nov 15 2021 9:36 am
- Forum: Projects
- Topic: TCI to CAT bridge for SPE 1.3K-FA
- Replies: 1
- Views: 16120
TCI to CAT bridge for SPE 1.3K-FA
Olimex ESP32-PoE-ISO board
https://www.olimex.com/Products/IoT/ESP ... e-hardware
https://www.olimex.com/Products/IoT/ESP ... e-hardware
- Mon 15 Nov 15 2021 9:16 am
- Forum: Space Balloon Project
- Topic: LightAPRS settings
- Replies: 0
- Views: 30115
LightAPRS settings
Arduino IDE settings
Board: MightyCore->ATmega1284
Clock: External 8MHz
Compiler: LTO disabled
Variant: 1284P
Pinout: Standard pinout
Board: MightyCore->ATmega1284
Clock: External 8MHz
Compiler: LTO disabled
Variant: 1284P
Pinout: Standard pinout