Malo ja o tehnici... (nista ozbiljno)

[9a4db]

Zanimljiva platforma, 199 USD na akciji

2 x RX
2 x TX
full duplex

Features & Specifications

RF Transceiver: Lime Microsystems LMS7002M MIMO FPRF (Datasheet)
FPGA: Altera Cyclone IV EP4CE40F23 - also compatible with EP4CE30F23
Memory: 256 MBytes DDR2 SDRAM
USB 3.0 controller: Cypress USB 3.0 CYUSB3014-BZXC
Oscillator: Rakon RPT7050A @30.72MHz (Datasheet)
Continuous frequency range: 100 kHz – 3.8 GHz
Bandwidth: 61.44 MHz
RF connection: 10 U.FL connectors (6 RX, 4 TX)
Power Output (CW): up to 10 dBm
Multiplexing: 2x2 MIMO
Power: micro USB connector or optional external power supply
Status indicators: programmable LEDs
Dimensions: 100 mm x 60 mm

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https://www.crowdsupply.com/lime-micro/ ... -112293101

https://player.vimeo.com/video/164304932

EDIT 05-05-2016. :
Ako netko nije uspio u prvoj turi po 199 USD, evo ponovno ->

As a result of the early success of our campaign, we are gathering further support from our manufacturers and suppliers and are now able to offer new pledge levels, including an additional flock of 500 early bird LimeSDR boards boards at a reduced price of $249. This is a significant reduction from the retail price of $299. Those who have already signed up for the $299 LimeSDR will instead pay the reduced price - your order will be amended and an updated order confirmation email will be sent to you within the next 24 hours.

[9a4db]

Na prethodnoj stranici pisao sam o "poor man preamp" od servisnog analognog TV tunera
Tu je frekventni odaziv -> (380 MHz do 1200 MHz / 10 MHz step / 5 dB po podjeli)
Marker na 1090 MHz / ADS-B frekvencija

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Mjerni setup / greška 40 dB attenuatora do 1,5 dB preko mjerenog opsega

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[9a4db]

Da vas još malo podsjetim na LimeSDR...

https://www.crowdsupply.com/lime-micro/ ... -112293101

Kampanja ide dalje, preko 150 k USD je prikupljeno, ali ako se ne skupi 500 k neće doći do proizvodnje pod ovim uvjetima.
Dakle naručite ako vas ovaj HW zanima. Kartica se tereti samo u slučaju uspjeha kampanje....

U međuvremenu GNU Radio & GQRX je proradio na LimeSDR, o tome i srodnim temama na ->
https://discourse.myriadrf.org/

[9a4db]

Manual LimeSDR ->
http://wiki.myriadrf.org/LimeSDR-USB_User_Guide

te još malo info na ->
https://myriadrf.org/blog/

[9a2jg]

Kartica se tereti samo u slučaju uspjeha kampanje....

Tako bi trebalo i sa članarinom HRS-u. Ako je zadovoljio članstvo, onda im platit. Mislim da bi ovih zadnjih desetak godina bili suva kurca, mokrih opanaka...

[9a4db]

Na temu harača, unlis & dozvole... sa teme ->
viewtopic.php?f=2&t=26&start=10#p4332

Evo ovo je napr. remote ekran AIS RX-a na mom otoku

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AIS prima jedan dvokanalni RX na 156 MHz Marine bandu
on hrani jedan Raspberry Pi B+ koji na intranetu generira ovu WEB
stranicu te šalje UDP pakete na globalni server.

Što hoću objasniti je: da ima radio tehnike i bez važeče HAM dozvole....
Ona (ne)narodna vlast je napr. izdavala dozvole za AIR band TRX trajno,
za HAM se ne mogu sjetit ali mislim da je bilo isto trajno.
Ova "demokratska" jok, plati brajko svake godine.... ili svakih 5 za HAM..
Nema veze, samo je pitanje koliko će potrajati,
kako je krenula mladost preko grane, neće dugo.

[9a6r]

Imaš praf dr Đani! Da bi čovek reč rekel.


73,9A6R

[9a4db]

Ali to nije sve, rekli bi na TV prodaji.....

Ovo je drugi RX, isto remote na 1090 MHz ->

DEVICE INFO:

MAC ADDRESS: bc:6a:29:8d:27:87
S/W VERSION: FR24-3.8,101,66
F/W VERSION: 21
ROOT DEVICE: /dev/mmcblk0p2
RADAR CODE: F-LDSP1
UPTIME: N days 14:02:20

GPS INFO:

POSITION: 43,16 10.7m [AMSL]
TEMPERATURE: 42.07'C

GPS EXTENDED STATUS:

Latitude: 43
Longitude: 16
Altitude: 10m
Decoding status: doing fixes
Antenna present: YES
Antenna port shorted: NO
Signal levels: 0A=46.0 10=45.0 12=50.0 14=31.0 15=50.0 1A=51.0 1B=36.0 1D=29.0 1F=38.0

STORAGE:

ROOT PARTITION USAGE: 103M/622M (18%)
USER PARTITION USAGE: 1.6M/120M (2%)

STATUS:

RECEIVER SOFTWARE: ON [stop, display log]
RAW FEED [30334]: UP, NUM CONNECTED: 0
BS FEED [30003]: UP, NUM CONNECTED: 0

FR24 CONNECTION STATUS:
ADS-B: connected, 26 AC tracked
ModeS: connected, 33 AC tracked

NETWORK CONFIG:

IP: 192.168.X.XXX NETMASK: 255.255.255.0
GW: 192.168.X.X
DNS1: 8.8.8.8
DNS2: 8.8.4.4

Pa onda zanimacija napr. ACARS na 1,5 GHz sa Inmarsata sa JAERO
http://jontio.zapto.org/hda1/jaero.html

[9a4db]

Vezano uz prethodni post.... vidi propagacija jutros po Jadranu (na 1090 MHz) statistika od cca 50 min

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[9a4db]

Nakon cca 3h ide Otrant i kvarat Tirenskog mora

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