Verticale 10-15-20 mt
Parte 1
Parte 2
Parte 3
Parte 4
Altri filmati
Ik1XPK, Claudio
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lunedì 5 gennaio 2015
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
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° 3030 novembre 1991 nr.030====================== *** 4 2 5 N E W S *** ====================== A CURA DI I1JQJI1 - 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:
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.
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.
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VOA
Radiogram transmission schedule (all days
and times are UTC)
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|||
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Saturday
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0930-1000 UTC
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5910 kHz
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Gray-line
reception possible in Europe this time of year. Asia-Pacific reception also
possible.
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Saturday
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1600-1630 UTC
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17860 kHz
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Usually provides the best
reception in Europe this time of year.
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Sunday
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0230-0300 UTC
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5745 kHz
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Saturday night in North
America. Usually audible in Europe, if you are awake.
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Sunday
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1930-2000 UTC
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15670 kHz
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Difficult into Europe this
time of year, but should improve by February. Often audible in southern Asia and the Pacific.
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All via the Edward R.
Murrow transmitting station in North Carolina.
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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.
domenica 28 dicembre 2014
RADIO BAYAN WEST - AFGANISTAN
Radio Bayan WEST (88,50 MHz) non trasmette in italiano ma è guidata da un ufficiale dell'Esercito Italiano, il capitano Silvia Greco. Parte delle operazioni della missione militare in Afghanistan, la radio svolge un ruolo importante nella vita del Paese. Un servizio della TV Svizzera ne racconta i particolari e il rischio che la sua esperienza termini.
In una corrispondenza di Paola Nurnberg, la TV Svizzera presenta - con interviste a un giornalista afgano e alla capitano italiana - le attività della radio che si concentra su musica (molta a richiesta) notizie e contatti attraverso le reti sociali.
Radio Bayan WEST nella base ISAF di Herat, in Afghanistan, rientra in quelle che sono chiamate "psyops", ossia le operazioni di comunicazione che in contesti difficili, come questo, servono a fare da ponte tra la popolazione locale e i militari impiegati sul posto, scrive la TV Svizzera il cui servizio è rintracciabile in rete su:
http://www.tvsvizzera.it/attualita/Viaggio-a-Herat-2-Radio-Bayan-3328264.html
Tratto da: http://portale.italradio.org/index.php
IK1XPK, Claudio
lunedì 22 dicembre 2014
HF Pre-Amplifier (500 KHZ - 54 MHZ) or (30 KHz – 30 MHz)
2x J310 Push-Pull Low-noise HF pre-Amplifier
(500 KHZ - 54 MHZ) or (30 KHz – 30 MHz)
by SV1AFN.
Il circuito presenta un guadagno di circa 15 dB sulle frequenze 0,5-50
MHZ con ancora un guadagno 8-10 dB di guadagno
a 60 MHz. La cifra di rumore è di rumore è di circa 3
dB con un impedenza d’ingresso di 50 Ohm.
Il circuito presenta due J310 J-FET polarizzate con circa 20mA ciascuno. Il trasformatore di ingresso T1 divide il segnale di ingresso per alimentare entrambi i J-FET in modo bilanciato, mentre T2 miscelare i due segnali amplificati.
Il circuito presenta due J310 J-FET polarizzate con circa 20mA ciascuno. Il trasformatore di ingresso T1 divide il segnale di ingresso per alimentare entrambi i J-FET in modo bilanciato, mentre T2 miscelare i due segnali amplificati.
La versione base ha un significativo rendimento in guadagno da
500 KHz sino a 50 MHz Per abbassare la frequenza di lavoro partendo dalle VLF 30 KHz
è necessario modificare T1 e T2 che sono dei binoculari BN43-2402. T1
presenta un primario di 3 spire e un secondario di 12 (6+6) con presa centrale; T2 ha 14 spire con presa
centrale (7+7) per il primario e 3 spire per secondario. Questa soluzione
ovviamente permette di amplificare le frequenze più basse ma taglia il limite
alto a 30 MHz circa.
Il preamplificatore è acquistabile sia montato che in kit.
Makis Katsouris, SV1AFN.
Schema (500KHz-60 MHZ)
Trasformatori T1 e T2 per 500 KHz – 60 MHz
T1 binoculare BN43-2402 primario 2 spire secondario 8 spire
(4+4) diametro 0,2 mm
T2 binoculare BN43-202 primario 2 spire secondario 10 spire (5+5)
diametro 0,2 mm
Trasformatori T1 e T2 per 50 KHz – 30 MHz
T1 binoculare BN43-2402 primario 3 spire secondario 12 spire (6+6)
diametro 0,2 mm
T2 binoculare BN43-2402 primario 3 spire secondario 14 spire (7+7)
diametro 0,2 mm
Circuito stampato.
J310
Good Dx IK1XPK, Claudio.
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