dimanche 28 avril 2013

Noble Radio NR-6N4

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Un nouveau fabricant américain vient de sortir un transceiver multimodes 6m et 4m. Il pèse 1.8 Kg, 10 mémoires, 20 watts CW...

un site Web sera prochainement disponible, le prix annoncé 800$, un peu cher pour un pour faire du 6m en France.

les spécifications annoncées en détails:

1. RECEIVER SPECIFICATIONS

Frequency Coverage:
4M: 69.9 MHz to 70.5 MHz
6M: 50.0 MHz to 52.0 MHz
Modes: SSB (USB & LSB) and CW

Circuit Type:
Downconverting Design
Dual Conversion: 1 st IF: 10.7 MHz 2 nd IF: 25 kHz
Sideband elimination using phasing techniques with digitally generated Quadrature carriers and Image Reject Mixers preceeded by 15 kHz crystal roofing filters
Ultimate receiver bandwidth set by adjustable SCAF filters (two 8 th order filters used. One for High Cut and one for Low cut)

Sensitivity:
MDS = -130 dbm

Dynamic Range Figures:
Blocking: 110 db
IMD (3 rd Order) = 95 db

Selectivity:
500 Hz to 4 kHz adjustable with the SCAF filters
Ultimate attenuation of filters are 55db or better

2. TRANSMITTER SPECIFICATIONS

Frequency Coverage:
4M: 69.9 MHz to 70.5 MHz
6M: 50.0 MHz to 52.0 MHz

Modes: SSB (USB & LSB) and CW

OUTPUT POWER: 20 Watts CW or PEP SSB

SCAF Filters can be used to tailor SSB Transmit audio.

3. GENERAL SPECIFICATIONS

SYNTHESIZER: DDS/PLL synthesizer with 10 Hz minimum step size. Tuning rate is variable depending on the Tuning Knob speed (Variable Speed Tuning - VST)

MEMORIES: 10 Memories per band

ANTENNA IMPEDANCE: 50 ohms unbalanced

SUPPLY VOLTAGE: 11.5 to 14 Volts Regulated DC (Negative Ground) at approximately 3.6 Amps at full output power.

DIMENSIONS: 8 in (203 mm)W x 12 in (305 mm) D- including knob and heatsink x 3.75 in (95 mm) H - including feet

WEIGHT: Approximately 4 lbs (1.8 kg)

4. SPECIAL FEATURES

The NR-6N4 has the capability of being controlled by a standard PC type keyboard that plugs into a rear connector. Once a keyboard is interfaced to the radio, it can be used to directly enter a frequency, skip directly to various functions by a single press of a function key without having to navigate the menus from the front panel buttons as well as being used to send CW via the keyboard. There is also a built in keyer function that operates with a standard keyer paddle for CW operation with or without a keyboard connection.

The low level 10.7 MHz IF signal is also brought out to a rear connector so that it may be used for panadapter or SDR applications.

2 commentaires:

  1. swl f-60194 hugues
    superbe appareil, parfait le lcd, un jolis vernier, des éssais à faire sur le 6m.
    bonne soirée

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  2. Bonsoir à Tous,
    Bon à savoir,le REF était en concertation avec l'ANFR pour justement obtenir une portion de fréquences dans la bande des 4m,c'est pas encore fait,ne nous enflammons pas,néanmoins voilà à quoi pourrait ressembler la bande des 4m chez nous :
    http://thf.ref-union.org/70.htm
    Amitiés à Toutes et Tous,bonne semaine et bon Trafic.Luc-F1OLV.

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