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sabato 10 gennaio 2015

Yaesu FT-991 HF/50 and 144/430



The FT-991 Transceiver is capable of operating SSB, CW , AM, FM Packet and System Fusion C4FM Digital.

The FT-991 is designed for the most competitive operating situations, with a suite of new features to enhance the experience. Whether you primarily operate at home, mobile or in the field, the FT-991 will provide outstanding fundamental performance and an inviting expansion into a full featured base station.

The FT-991 provides solid transmitter performance with up to 100 Watts on HF/50MHz and 50 Watts on 144/430 MHz. Recognizing an all-important Amateur Radio Golden Rule - “You cannot work them if you cannot hear them”– the FT 991 features a rugged state-of-the-art highly balanced receiver circuit configuration. The highspeed floating point DSP chip TMS320C6746 (3000 MIPS / 2250 MFLOPS) from Texas Instruments used in the receiver design guarantees excellent interference rejection with actual signals under real-world conditions, not only on HF but also in the VHF and UHF bands.

The 1st IF frequency is protected by selectable robust 3 kHz and 15 kHz roofing filters that effectively attenuate interfering signals. The triple conversion circuit structure allows highly flexible gain distribution at each stage. This proven receive design architecture enables elimination of unwanted signals through filters at each stage as well as optimized gain distribution.

A built-in 3.5-in TFT full color touch screen high resolution display with loads of information provides stress-free operability and visibility for the FT-991 user.
Advanced Spectrum Scope with ASC (Automatic Spectrum-Scope Control) located just below the LCD display gives the operator all the information for comfortable QSO on the DXing scene.

The new FT-991 also has Automatic Mode Select (AMS) function that instantly recognizes digital mode or FM analog mode and enables mutual communication.


Radio Features:
- 160 Meters through 70 Centimeters - SSB/CW/FM/C4FM Digital/AM
- 100 Watts (2 Meter / 70 Centimeter: 50 Watts) of Solid Performance
- 3.5 inch TFT Full-Color Touch Panel Operation For Superior Operability and Visibility
- High Speed Spectrum Scope with ASC (Automatic Spectrum-Scope Control) built-in
- AMS, and Group Monitor fully utilize the potential of C4FM Digital *
- Triple Conversion Circuit (SSB/CW/AM)
- Double Conversion (FM/C4FM) Configuration, 1st IF is set at 69.450 MHz
- Roofing Filters 3 kHz and 15 kHz as standard equipment
- IF WIDTH and IF SHIFT provides great QRM Rejection
- CONTOUR, DNR, IF Notch and APF (Audio Peak Filter, CW only)
- 160 - 6 Meters High Speed Automatic Antenna Tuner included
- High Accuracy TCXO ±0.5 ppm
- Built-in Electronic Keyer
- CW Message Memory with Beacon Mode
- CW Pitch / Sidetone Control
- Automatic Repeater Shift
- USB Connector (CAT control, Audio interface, PTT/SHIFT control)
- Two Antenna Connectors (HF/50MHz, 144/430MHz)
- Optional FC-40 Automatic Antenna Tuner (for long wire antenna) available
- Optional ATAS-120A Active Tuning Antenna available
* Data FR mode (high speed data communication mode) is not supported
therefore image send/receive by C4FM is not possible.
Supplied Accessories:
Hand Microphone (MH-31A8J)
DC Power Cord
Spare Fuse (25A)
Operating Manual
Warranty Card

Specifications:
Frequency Ranges: RX 30 kHz - 56 MHz, 118 MHz - 164 MHz, 420 MHz - 470 MHz (specified performance, amateur bands only)
TX 1.8 MHz - 54 MHz, 144 MHz - 148 MHz, 430 MHz - 450 MHz (amateur bands only)
Circuit Type: Triple-Conversion Superheterodyne: SSB/CW/AM
Double-Conversion Superheterodyne: FM/C4FM
Modulation Type: A1A(CW), A3E(AM), J3E(LSB, USB), F7W(C4FM), F3E(FM),
F1D(PACKET), F2D(PACKET)
Power Output: SSB/CW/FM AM Carrier
160- 6 Meters: 100 W 25 W
2 Meters/70 Centimeters: 50 W 12.5 W
Case Size(W x H x D): 9.0" x 3.2" x 9.3" (w/o knob and connector)
Weight: 9.5 lb


 RX Range: 30 kHz – 56 MHz, 118 MHz – 164 MHz, 420 MHz – 470 MHz


Good Dx  de IK1XPK, Claudio.

giovedì 8 gennaio 2015

ICOM IC-7851 News



E' uscito il nuovo prodotto di punta ICOM sul sito giapponese: IC-7851. Non sembra essere un prodotto completamente nuovo - il pannello frontale è quasi identica alla IC-7800, ma presenze può essere fuorviante.





General specification
Frequency range
Reception frequency
30kHz ~ 60.000MHz (operating range)
(Warranty coverage)
100kHz ~ 29.999MHz
50.000MHz ~ 54.000MHz
Transmit frequency
1.810MHz ~ 1.825MHz
1.9075MHz ~ 1.9125MHz
3.500MHz ~ 3.575MHz
3.599MHz ~ 3.612MHz
3.680MHz ~ 3.687MHz
3.702MHz ~ 3.716MHz
3.745MHz ~ 3.770MHz
3.791MHz ~ 3.805MHz
7.000MHz ~ 7.200MHz
10.100MHz ~ 10.150MHz
14.000MHz ~ 14.350MHz
18.068MHz ~ 18.168MHz
21.000MHz ~ 21.450MHz
24.890MHz ~ 24.990MHz
28.000MHz ~ 29.700MHz
50.000MHz ~ 54.000MHz
4630kHz
Mode
LSB, USB, CW, RTTY, PSK31 / 63, AM, FM
The number of memory channels
101 (split memory 99ch + scan edge 2ch)
Antenna impedance
50Ω (unbalanced)
Antenna terminal
HF / 50MHz band for M type 4 system, BNC type 2 system for reception
Power-supply voltage
85 ~ 265V AC
Grounding scheme
Minus ground
Operating temperature limit
0 ~ + 50
Frequency stability
± 0.05ppm within (at the time of 0 ~ + 50 / 54MHz)
Frequency resolution
Minimum 1Hz
Power consumption
Receiving standby time of 120VA (TYP) 
Reception at the maximum 130VA (TYP) 
Send at the maximum 800VA
External dimensions 
(I except the projections)
About 425 (W) × 149 (H) × 435 (D) mm
Weight
About 23.5kg

Transmission unit
Transmission output
SSB, CW, FM, RTTY, PSK31 / 63: 5W ~ 200W 
AM: 5W ~ 50W
Modulation scheme
SSB: balanced modulation 
AM: low-power modulation 
FM: phase modulation
Spurious emission intensity
Harmonic: 
More than 60dB (HF band) 
70dB or more (50MHz band) 

Spurious area (I except the harmonic): 
More than 50dB (HF band) 
70dB or more (50MHz band) 

Out-of-band region: 
More than 40dB (HF band) 
More than 60dB (50MHz band)
Carrier suppression ratio
63dB or more
Unnecessary sideband suppression ratio
70dB or more
Microphone impedance
600Ω
TX variable range
± 9.999kHz
Receiving part
Receiving scheme
Double superheterodyne system
Intermediate frequency
First: 64.455MHz (MAIN), 64.555MHz (SUB) 
Second: 36kHz
Receiver sensitivity (TYP)
SSB / CW / RTTY / PSK (BW = 2.4kHz) (when 10dB S / N) 
0.1MHz ~ 1.7999MHz: -6dBμ (preamplifier 1: When ON) 
1.8MHz ~ 29.990MHz: -16dBμ (preamplifier 1: When ON) 
50MHz ~ 54MHz: -18dBμ (preamplifier 2: When ON) 

AM (BW = 6kHz) (when 10dB S / N) 
0.1MHz ~ 1.7999MHz: + 16dBμ (preamplifier 1: When ON) 
1.8MHz ~ 29.990MHz: + 6dBμ (preamplifier 1: When ON) 
50MHz ~ 54MHz: + 0dBμ (preamplifier 2: When ON) 

FM (BW = 15kHz) (when 12dB SINAD) 
28MHz ~ 29.990MHz: -6dBμ (preamplifier 1: When ON) 
50MHz ~ 54MHz: -10dBμ (preamplifier 2: When ON)
Squelch sensitivity
SSB / CW / AM / RTTY / PSK: + 15dBμ below 
FM: 0dBμ below
Selectivity (TYP)
SSB (BW = 2.4kHz): 2.4kHz more / -3dB 3.6kHz or less / -60dB 
CW / RTTY / PSK (BW = 500Hz): 500Hz or more / -3dB 700Hz or less / -60dB 
AM (BW = 6kHz): 6.0kHz more / -3dB 15kHz or less / -60dB 
FM (BW = 15kHz): 12kHz or more / -6dB 20kHz or less / -60dB
Spurious interference ratio
70dB or more
Low-frequency output
More than 2.6W (8Ω load, when 10% distortion)
Low-frequency load impedance
RIT variable range
± 9.999kHz more
Accessories
● rack mount handle 
● SD card 
● AC power cable 
● spare fuse 
● speaker plug other










Good Dx de IK1XPK, Claudio

lunedì 5 gennaio 2015

THE 10/15/20 METER TRAP VERTICAL ANTENNA



Costruiamo una verticale per i 10/15/20 Mt in quattro puntate by Dave Tadlock 







Verticale 10-15-20 mt


Parte 1



Parte 2



Parte 3



Parte 4


Altri filmati



Ik1XPK, Claudio

K1N Navassa Island




K1N Navassa Island Press Release
It is now about 4 weeks before K1N goes on the air. The exact date of departure from the staging area will be dependent upon a combination of the date U.S. FWS transportation is available and upon weather windows.  It is looking like K1N will be QRV the first two weeks of February.

Most of the team have their bags packed and are ready to go. Because of the helicopter logistics, this will be a no-frills-minimum-comfort operation for the team. Meals will be MRE’s. The container has been organized for a quick camp setup and quick radio/antenna setup to take advantage of every moment. It is estimated there will be two full days of helicopter shuttles to get everything needed to start operations. A small team of FWS personnel will accompany us, including armed Federal Law Enforcement Officers. Efficiency is not just for the team, but also for the DX community.  It has been over 22 years since Navassa was activated and USFWS will not allow another operation for at least 10 more years.  This is a ONCE IN 32 YEARS opportunity to work Navassa! Everyone can make the most of this opportunity by LISTENING to the operator’s instructions and following the cadence of the operator. We will not be working all modes on all bands, but limiting most bands to a specific mode, so that we can work the pileups down to the last little pistol.

Fund raising has been going well.  The team has contributed about half of the total budget. For those in the U.S., it is possible to make a year-end tax-deductible donation, directed through the Northern California DX Foundation. See our website and follow the instructions on the DONATE tab.

We have a Facebook page to watch and a Twitter feed (@navassa2015) to follow along.

For the KP1-5 Project,
Bob Allphin K4UEE
Glenn Johnson W0GJ
Mike Thomas NA5U
 

Good DX IK1XPK, Claudio.

domenica 4 gennaio 2015

IR1RAI - QSL STORICA


INFO TRATTA DAL 425DXN N° 30

30 novembre 1991                                                       nr.030
                           ======================
                           *** 4 2 5  N E W S ***
                           ======================
                               A CURA DI I1JQJ

I1    - in occasione  del  novantesimo anniversario  del  primo  collegamento
        effettuato da Guglielmo Marconi tra la Cornovaglia e gli Stati Uniti,
        dal 12  al 18  dicembre  sara' attiva,  dal  Centro Ricerche  RAI  di
        Torino, la stazione speciale IR1RAI; QSL via I1XA.

'73 de IK1XPK, Claudio


giovedì 1 gennaio 2015

SDRanywhere

Operate RFSPACE SDRs anywhere in the world
on your Android tablet, Windows, Linux or Mac OS



The SDRanywhere application is an Android app that allows remote operation of an RFSPACE SDR-IQ or CloudSDR radio anywhere in the world. The demodulated audio and waterfall information is compressed and sent to the client application using a low bandwidth internet connection. The upcoming CloudSDR has a built in server and it connects directly into an ethernet jack or WIFI client. It can serve as a remote sensor node or remote RX point. The SDR-IQ requires a computer running the server app.

The server application for the SDR-IQ is part of the Windows RemoteSDRClient project inSourceforge. This client application is open source. The RemoteSDR download also includes a PC, Linux or Max OS client to connect to the SDR-IQ and CloudSDR radios.


Ham band 20 Mt.

The instructions for the RemoteSDRClient and server setup are available here:


The Android application is currently in beta and will expire on February 1, 2014. It is a .APK file for Android 4.0 and newer devices it can be downloaded here:



RFSPACE maintains a Web Server list showing the radios that are publicly available. Any user with the Android or PC clients is welcome to connect.

Yahoo grups


RFSpace web site



'73 IK1XPK Claudio.




VOA RADIOGRAM - FlDigi - 3-4 January 2015





Hello friends,

Because of difficult mid-winter shortwave propagation, one of this weekend's VOA News items will be in MFSK16 (55 wpm), to see if it will provide a more successful text decode than our usual MFSK32 (120 wpm).

The printout of Fldigi,  under its default settings, displays the name of the previous mode rather than the mode that has just started. If you want the name of the just-started mode in your printout and log file, make the following adjustments to Fldigi:
1) Configure > Notifications  
2) Under Event, select RSID Reception
3) Click Add
4) Click the box to the right of "Append to RX text:"
5) This should appear in the box: RSID: $RX_MARKER
6) Click Update
7) Click Close


(Fldigi 3.22.04 is now available from http://www.w1hkj.com/download.html , although this particular update is not necessary for this weekend's VOA Radiogram.)

VOA Radiogram 3-4 January 2015

Here is the lineup for VOA Radiogram, program 92, 3-4 January 2015 (in MFSK 32 except where noted):

 1:44  Program preview
 2:39  Iran expands Internet censorship*
 8:42  North Korea TV ends Russian, Chinese films*
16:40  MFSK16: Spray-on solar panels*
25:46  Closing announcements*
28:14  Bonus mode: Olivia 64-2000


*with image

Please send reception reports to radiogram@voanews.com.

VOA Radiogram transmission schedule (all days and times are UTC)
Saturday
0930-1000 UTC
5910 kHz
Gray-line reception possible in Europe this time of year. Asia-Pacific reception also possible.
Saturday
1600-1630 UTC
17860 kHz
Usually provides the best reception in Europe this time of year.
Sunday
0230-0300 UTC
5745 kHz
Saturday night in North America. Usually audible in Europe, if you are awake.
Sunday
1930-2000 UTC
15670 kHz
Difficult into Europe this time of year, but should improve by February. Often audible in southern Asia and the Pacific.
All via the Edward R. Murrow transmitting station in North Carolina.




The Mighty KBC will transmit a minute of MFSK64 Saturday at about 1230 UTC on 6095 kHz and Sunday at about 0130 UTC (Saturday 8:30 pm EST) on 7375 kHz. Both frequencies are via Germany. The content will be the same as last weekend. Reports to Eric: themightykbc@gmail.com .

Thank you for your reception reports to VOA Radiogram last weekend and throughout 2014. Because of travel, I will not be able to answer reports to program 91 until next week. 

Wishing you good listening, good decoding, and all the best in 2015.

Kim

Kim Andrew Elliott
Producer and Presenter
VOA Radiogram



Good dx de IK1XPK, Claudio.