Auteur Sujet: LNR LD-11 - SDR - New QRP Multimode HF+6M Transceiver  (Lu 2254 fois)

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LNR LD-11 - SDR - New QRP Multimode HF+6M Transceiver
« le: 14 Avril 2016, 15:05:19 »
LNR LD-11 - SDR - New QRP Multimode HF+6M Transceiver

http://www.lnrprecision.com/store/#!/LD-11/p/64137743

775$ US

The new LD-11is Digital Direct Conversion, SDR type, build-in CPU (SM32a) DSP radio in which RF signals are directly converted to a digital data via differential and balanced A/D converters. This enables direct sampling with extremely low phase and floor noise.

The DSP is unique and features two independent channels. It also employs a unique differential algorithm within the software which is applied for IQ processing of the channels with phase suppression of the unwanted side-band channel.

The balanced ADC and DAC gives additional noise floor reduction and the receiver can handle interfering signals that are 100 dB stronger than the desired signal at a frequency separation of 10 kHz, and is about 130 dB stronger at 50 kHz separation. As the receiver and transmitter are using the same DSP channel, there is no gap between the receiver performance and the transmitter performance. Thus, there is a clean neighborhood on the bands. At the development stage, our intentions were motivated by the TX side-band noise of existing SDR manufacturers, so our aim was to fully equalize our transmitter to have noise performance that is compatible with the best modern receivers, or even better. After a arduous year of development , we think we achieved it!

This 11+ band radio is based on the LD-5, which has proven to be one of the most exciting QRP transceivers introduced in the last few years. Quite frankly, the performance rivals high end units offered by other manufactures at a much lower price point. Our motto is that we make QRP transceivers that you will want to take out in the field (without fear of breaking the bank).

Transmitter

Input Power:   11.5-14.8 VDC
Output Power:   5 – 8W
Measurement:    SWR and Power:Numbers or Bar indicators on display
Supply Voltage: Real voltage on display
Two Modes CW: Select Straight Key or Paddle (built-in Iambic)

Receiver

Receive sensitivity:   0.15uV w/o preamp
Ant Preamp:   +16 dB
Spurious Response Rejection:   IMD3 -48Db/ 5W
IMD5 -43dB
ATT:   -12db

Specifications

Frequency Range:      1800 kHz – 29.990 MHz HF +50-54MHz
160, 80, 60, 40, 30, 20, 17 and 15, 12, (11), 10, & 6 meter all mode operation
Modes:      USB, LSB, CW, CW-R, DIGITAL DATA:CAT –USB jack : CW, PSK, RTTY, SSTV – 3.5mm jack
PAN mode:      Easy to Find quiet port +/- 24kHz from main frequency.
Power:      5W output in CW / SSB
Frequency Stability:      +/- 3 ppm (Si570 defined) typical over 0-50 deg C
Supply Voltage:      10.5V min to 15V max 350mA receive and 1.5 to 2A typical in transmit
LO temp. Stability:      +/- 2.5
Antenna:      50 ohms BNC
Dual VFO      
Memory:      100 memory storage per band Memorize frequency, mode, VFO’s
Built-in speaker:      8 ohms, .5 watts
Dimensions:      4.724”L X 3.937”W x 1.957“H
Weight:      19oz/0.54k/excl. mic.
Iambic key:      Mode A and Mode B
Pitch CW:      Controls CW offset. The sidetone pitch is automatically set to equal the offset
Notch Filter:      Automatic Heterodyne filter for SSB from -6 to -40 db
Noise reduction:      Level of attenuation of the noise from 1 to 50- use minimal necessary
Noise Blanker:      Adjusted in the range from value 4 to 12 readings depending on interference
CW VOX:      Break in delay in CW – adjustable from 0.1 seconds to 5 seconds
CW memory keyer      Choose Iambic Mode A or B
VOICE VOX      VOX Delay adjustable from 0.1 seconds to 5 seconds
SSB VOX Level:      VOX GAIN 10-100 10 IS MOST SENSITIVE
SSB EQ 3 band      Bass, treble, middle audio boost on transmit - up to environment
8 Different filters (incl):      4 of 4 for CW/ SSB - 1-3 factory presets – No.4 adjustable for CW/50-1000Hz/ and SSB/250-3.6KHz
Compressor SSB:      0-20dB
SSB TX MUTE      Enable= no monitor Disable= monitor
No QSK      Maximum switching delay is 12mS and digital delay is 47mS

Please note that when you purchase this unit, you read the manual very carefully. Take special care to use only approved connectors, proper antennas, 50ohms dummy loads and carefully check voltage and polarity of your 12VDC power supply or battery. Check all buttons and inspect after delivery. Once you verify reception and SWR, then plug in your mic and other accessories. All 3.5mm jacks are stereo jacks.




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Re : LNR LD-11 - SDR - New QRP Multimode HF+6M Transceiver
« Réponse #1 le: 14 Avril 2016, 15:09:01 »
Bizarrement, il est aussi indiqué: 60M and 11m CB band in some conditions!

Bien hâte de voir les conditions. C'est surement que les fréquences sont identifiées et qu'il est impossible de sortir de celles-ci...



« Modifié: 14 Avril 2016, 17:52:13 par VE2UGO Hugo »

Hors ligne VE2UGO Hugo

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Re : LNR LD-11 - SDR - New QRP Multimode HF+6M Transceiver
« Réponse #2 le: 28 Juin 2016, 23:34:08 »
Voici quelques vidéos qui montrent le LD-11 en opération

LNR Precision LD-11 Field Test
https://www.youtube.com/watch?v=86iFWADgPrI

LNR LD-11 Feature Overview
https://www.youtube.com/watch?v=m8QRQ59y9B0

First look at the LD-11
https://www.youtube.com/watch?v=a4uCo997SMc

LD-11 Pan adapter
https://www.youtube.com/watch?v=ud4KJfV8TJ4

LD-11 and HB mag loop
https://www.youtube.com/watch?v=YqQNDtZ9exQ

FX-9A and LD-11 audio comparison
https://www.youtube.com/watch?v=l4-AJantWgI

Bon visionnement!!!