Difference between revisions of "Current Projects"
From Note to self
(Created page with "= Belthorn XTal Filter = STATUS: stuck * Ceramic caps didn't work very well: ** Low Q factor ** high tolerances * Refitting with styroflex caps, but I'm missing some values. ...") |
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= Belthorn XTal Filter = | = Belthorn XTal Filter = | ||
| − | STATUS: | + | STATUS: testing |
* Ceramic caps didn't work very well: | * Ceramic caps didn't work very well: | ||
| Line 6: | Line 6: | ||
** high tolerances | ** high tolerances | ||
* Refitting with styroflex caps, but I'm missing some values. | * Refitting with styroflex caps, but I'm missing some values. | ||
| + | |||
| + | 2014-03-27: | ||
| + | Built new filter, works ok (Currently testing with VNA) | ||
= Bridge for N2PK VNA = | = Bridge for N2PK VNA = | ||
| − | STATUS: | + | STATUS: DONE! |
| − | + | ||
| − | + | ||
= reconstruction filter and amplifier for AD9951 DDS = | = reconstruction filter and amplifier for AD9951 DDS = | ||
| Line 16: | Line 17: | ||
* Need to caracterize the filter and test the MMIC amplifier. | * Need to caracterize the filter and test the MMIC amplifier. | ||
| + | |||
| + | Tested at RCL. Filter is ok. Amplifier oscillates. | ||
| + | |||
| + | 2014-03-28: Refitted the MAR-8 bias resistor with 100 Ohm (was 10 Ohm, oops). Also installed the 3dB attenuator at the MAR-8 input. Should operate at somewhere 7-8V now. | ||
| + | |||
| + | = VNA fast detector board = | ||
| + | Plan: to redraw the fast detector board with kicad, and order PCB's with OSHPark. | ||
= AD9850 DDS VFO = | = AD9850 DDS VFO = | ||
STATUS: writing software. | STATUS: writing software. | ||
| + | |||
| + | = Alt/Az sat tracking motor = | ||
| + | Deadline CCC'15 | ||
| + | |||
| + | [[Sat Tracking Controller]] | ||
| + | |||
| + | = Arduino workshop April 2015 = | ||
| + | [[RCL Arduino Workshop]] | ||
| + | |||
| + | = RCL Harec cursus = | ||
| + | |||
| + | = Olimex Olinuxuino interface to N2PK = | ||
| + | |||
| + | = Step attenuator = | ||
| + | |||
| + | = AD9951 board = | ||
| + | |||
| + | = Etherkit CRX1 = | ||
| + | |||
| + | = 70MHz amplifier = | ||
| + | |||
| + | = test VNA ON7UM = | ||
| + | |||
| + | = CX-10 and USRP = | ||
| + | * [http://www.inguardians.com/pubs/GRC_signal_analysis_InGuardians_v1.pdf signal analysis] | ||
| + | * [http://www.control.aau.dk/~kresten/stuff/GND/FSK_signals_demod.pdf FSK] | ||
| + | * [http://www.deviationtx.com/forum/protocol-development/3368-jd-395-cx-10 CX10 protocol discussion] | ||
Latest revision as of 05:30, 11 February 2015
Contents
- 1 Belthorn XTal Filter
- 2 Bridge for N2PK VNA
- 3 reconstruction filter and amplifier for AD9951 DDS
- 4 VNA fast detector board
- 5 AD9850 DDS VFO
- 6 Alt/Az sat tracking motor
- 7 Arduino workshop April 2015
- 8 RCL Harec cursus
- 9 Olimex Olinuxuino interface to N2PK
- 10 Step attenuator
- 11 AD9951 board
- 12 Etherkit CRX1
- 13 70MHz amplifier
- 14 test VNA ON7UM
- 15 CX-10 and USRP
Belthorn XTal Filter
STATUS: testing
- Ceramic caps didn't work very well:
- Low Q factor
- high tolerances
- Refitting with styroflex caps, but I'm missing some values.
2014-03-27: Built new filter, works ok (Currently testing with VNA)
Bridge for N2PK VNA
STATUS: DONE!
reconstruction filter and amplifier for AD9951 DDS
STATUS: ready for testing
- Need to caracterize the filter and test the MMIC amplifier.
Tested at RCL. Filter is ok. Amplifier oscillates.
2014-03-28: Refitted the MAR-8 bias resistor with 100 Ohm (was 10 Ohm, oops). Also installed the 3dB attenuator at the MAR-8 input. Should operate at somewhere 7-8V now.
VNA fast detector board
Plan: to redraw the fast detector board with kicad, and order PCB's with OSHPark.
AD9850 DDS VFO
STATUS: writing software.
Alt/Az sat tracking motor
Deadline CCC'15
