Archivi tag: Receiver

STAMPFL mini swRX and swRX two Analog Shortwave Receivers with Touchscreen (still in its experimental stadium!)


STAMPFL mini swRX and swRX – Two analog Shortwave Receivers with Touchscreen – The STAMPFL Receiver is still in its experimental stadium …. and is not, comparable to a DSP KWZ-30, Reuter or Perseus receiver – STAMPFL Morse keys was founded by Heinz Stampfl HB9KOC in 2005 and is now the first Swiss manufacturer of Morse keys .
An Assembly kit for the near future is in planing – The technology used is analog (exception of the TFT Display and DDS) with IF 10.7 MHz e 455kHz. – MODULATION, SPAN and ATT can be selected using the touchscreen display.

mini_swRX_close-in mini_swRX_internal-1 mini_swRX_internal-2

italiano I due ricevitori HF swRX’s della  STAMPFL Svizzera, sono di tipo analogico (con esclusione del Display TFT e del DDS) con IF a 10.7 MHz e 455 kHz, sono dotati in ingresso di Preselettore con toroidi T-50 e poi di Filtro a quarzo in 1st IF . Non sono comparabili con ricevitori più blasonati tipo KWZ-30 DSP oppure Perseus SDR.
Questi STAMPFL swRX e mini swRX sono attualmente in fase sperimentale (vedere link al sito web), essi hanno suscitato un certo interesse nel suo complesso per il tipo di filosofia del progetto, che dovrebbe portare anche alla fornitura in Kit. – Qui sotto il Modello swRX più grande, però anche esso sempre in fase sperimentale!

Link to: STAMPFL mini swRX  Features, Video, Photos and more news


STAMPFL swRX HF EXPERIMENTAL SHORTWAVE RX –  Für eine detaillierte Erklärung des Gerätes haben wir ihnen unten eine Videodokumentation angehängt (see the link below)

Link to: Official facebook Stampfl page
Link to: STAMPFL swRX Features, Video, Photos and more news


Source by: STAMPFL MORSETASTEN Gerbestrasse. 9 – CH-9436 Balgac (website)

[Note] – Detailed specifications: please see the official STAMPFL Morsetasten CH sources – All specifications are subject to change without notice – All trademarks belong to their respective holders.


R&S®EM510 HF Receiver 9 kHz to 32 MHz – R&S®PR100 Receiver 9 kHz to 7.5 GHz


R&S®EM510 HF Digital Wideband Receiver from 9 kHz to 32 MHz is a Direct Receiver, after the antenna signal has passed through Preselection with Highpass/Lowpass Filters, it is fed directly into the ADC (Analog Digital Converter) –  R&S®PR100 portable receiver  9 kHz to 7.5 GHz spectrum and spectrogram (waterfall) display on 6.5″ color screen – See the pictures, summary overview and Official Data Sheet (ENG) by link below.


The R&S®EM510 receiver features digital IF filters with 30 different bandwidths from 100 Hz to 10 MHz. The filter characteristics are optimized for radio-monitoring tasks, allowing top-quality processing of signals up to 10 MHz bandwidth.
Panorama scan up to 34 GHz/s or 600 000 channels/s – Frequency/memory scan up to 1500 channels/s – IF panorama with up to 9.6 MHz span – Video panorama, AM, FM, AM², FM², I/Q, I/Q² – Audio filters: notch, noise suppression, band-pass – Dual-channel analog video output (AM, FM) – LAN interface (SCPI) – and more!

R&S_EM510_rearExcellent RF characteristics and a wide dynamic range combined with powerful Digital Signal Processing are the basis for optimal system solutions.
Wideband operation: I/Q data up to 10 MHz bandwidth – Demodulation up to 10 MHz bandwidth – and more! – Demodulation modes: FM – AM – PULSE (AM PULSE)- jM – USB – LSB – ISB – CW – I/Q.

Input level: –137 dBm to +10 dBm (–30 dBμV to +117 dBμV) f = 400 kHz to 32 MHz / Frequency resolution: 1 Hz / Aliasing suppression: ≥90 dB, typ. 120 dB / 3nd Order IP: ≥30 dBm, typ. 35 dBm (low distortion mode), f = 1 MHz to 32 MHz – ≥20 dBm, typ. 25 dBm (normal mode), f = 1 MHz to 32 MHz / and more features… see the link below.

Link to: Download the R&S EM510 Data Sheet for all informations (ENG)
Link to: More information at (ENG)

R&S PR100 ReceiverThe R&S®PR100 portable receiver  9 kHz to 7.5 GHz Spectrum and spectrogram (waterfall) display on 6.5″ color screen has been specifically designed for radio-monitoring applications in the field – Display of results on a digital map loaded in the R&S®PR100 – Digitally modulated signals converted to the baseband using I/Q demodulation and stored in the receiver or exported via LAN – Full remote control via LAN interface (SCPI commands to IEEE488.2) and more.. see the link below

Link to: Download the R&S®PR100 Data Sheet #..87012 – 29 pag. (ENG)

R&S PR100_spectrumtypeFast panorama scan across the entire frequency range from 9 kHz to 7.5 GHz
10 MHz IF spectrum e demodulation with bandwidths from 150 Hz to 500 kHz
Spectrum and spectrogram (waterfall) display on 6.5″ color screen
Automatic location of emissions with direction finding (20 MHz to 6 GHz)
Whether used for monitoring emissions, detecting interference or locating miniature transmitters

[Note] Operation using standard software and PC  (The EM510 receiver comes with comprehensive operating software etc.) – All specifications are subject to change without notice – All trademarks belong to their respective holders – This page is just a non-official overview, where no one should draw any conclusions.

SDR WR-G33DDC ‘EXCALIBUR Pro’ 9 kHz to 50 MHz – Excalibur Basics Video by DK8OK

The New WiNRADIO WR-G33DDC ‘EXALIBUR Pro’ direct-sampling SDR Receiver from 9 kHz to 49.995 MHz, includes a real-time 50 MHz-wide specrtrum analyzer and 4 MHz-wide instantaneous bandwidth available for recording, demodulation and further digital processing. – Low-noise preamplifier – Configurable preselection filters – Filter bandwidth adjustable down to 1 Hz.

As many as 119 different filter combinations can be constructed by the user (91 bandpass, 14 low-pass and 14 high-pass). The front-end employs 34 subminiature electromechanical relays! Three demodulators allow the simultaneous reception of three signal frequencies within the 4 MHz bandwidth. –
GROVE  US – Catalog of 06/01/2012 – manufacture: WiRa – Eton – Sangean – Kaito – Perseus – Icom
Prices:  WR-G33DDC EXC. Pro $1,649.95 / WR-G31DDC EXC.. $899.95 / Perseus bid.. $1,199.00

The WR-G33DDC Pro Is an advanced version of the WR-G31DDC receiver, offering many additional features and improvements.  – (!! Please See the WR-G33DDC  Basics Video  by DK8OK below)

The WR Software (Version 1.68)  provide an logical user interface.  – There are several spectrum analyzer configurations including the 50 MHz full span with 1.5 kHz resolution. – The DDC down-converted portion is highlighted and can be selected either via keyboard or by the mouse cursor and then displayed in another window, within which three independent receiver channels can exist. – For any channel, the receiver’s selectivity, IF shift, passband tuning, notch, and other functions can be adjusted, and the audio spectrum of the demodulated signal can be observed. – –
Link to: WR-G31DDC – Perseus – Gemini – AOR-2300 and DX-R88 HamFair 
Link to: WiNRADIO WR-G33 Excalibur Pro the Official Full Specifications

This great video explains its graphical user interface (GUI), and gives some hints on how to use them. Thanks Nils, DK8OK.


Web Radio SDR HF multiple users, located at the amateur radio band – Link utility

Web radio SDR (Software Defined Radio via internet) in varie bande HF multi utente, che si trovano in varie parti del mondo. [Note]: La radio  ETGD, presso l’Università di Twente NL non ha più accesso da novembre 2010! – Rimane l’immagine qui sopra come apprezzamento di uno tra i primi progetti sviluppati in rete. – Qui sotto  i link per ricercare ed ascoltare via web! See below!

[Note]: you need both Java and JavaScript enabled for this page to work properly

Il primo link va al ricevitore WebSDR from Weert, che si trova nella parte meridionale dei Paesi Bassi, vicino al confine con il Belgio. – Il secondo va su WEBSDR Org che ha una raccolta di link

Link to: WebSDR from Weert, The Netherlands

Link to: WEBSDR Org – Il sito con link e relative descrizioni di Web Radio

Su queste pagine potete ascoltare e controllare ricevitori SDR per onde corte. Possono essere sintonizzati ed ascoltati da parte di più utenti contemporaneamente, grazie all’utilizzo del Software-Defined Radio e un interfaccia web appositamente progettata da ciascun gruppo!
Si possono usare i vari comandi per sintonizzare, cambiare la Banda Passante del DSP, cambiare il modo, vedere l’intensità del segnale in dBm. Nel riquadro sotto vengono indicate le sigle (con scritte colorate) di chi ha fatto il log-in e le frequenze che utilizzano in tempo reale. No abuse, please!!

ENG: This WebSDR receiver from Weert,  is located in the southern part of The Netherlands, near the Belgium border – This NOT the many-band websdr from the amateur radio club ETGD at the University of Twente Nl. –Link to: Page info

WR-G31DDC Excalibur Perseus Gemini AOR 2300 and DX-R8 Receivers, Ham Fair 2010

Tokyo Ham Fair 2010  AOR booth: The Digital Revolution – SDR Perseus 10kHz – 30MHz – AR5001D 40kHz – 3150MHz – AR2300  Black-Box Receiver from 40kHz to 3150 MHz .  Alinco booth DX-R8 — (See th Aor GUI above, Watch the Videos Tokyo Ham Radio (2010 年 東京ハムフェア AOR ブース) and the Link to Download the Flyers …below)

The AOR AR5001D Circuit Configuration: 40kHz – 25MHz Direct Conversion SDR // 25MHZ – 3150MHz Double or Triple Conversion Superheterodyne system // IP3: More than +20dBm (@14.1 MHz), More than +12dBm (@50 MHz), More than +7dBm (@620 MHz) – The AOR AR5001D features a spectrum display function. FFT analyzer is employed for fast spectrum display processing (Display built-in) – Digital I/Q output (Option) through USB2.0 – Composite video output (RCA type) 75 ohm 1V p-p –
US market  List Price:   $4299.00 // Your Price: $3799.95 – is expected August 2010.

Link to: Download AR5100D Flyer for Technical Highlights (PDF 580kB)

The AOR AR2300 Black Box feature a up to three channels can be monitored simultaneously. Direct sampling architecture below 25MHz. The AR2300 utilizes outstanding direct sampling digital architecture for reception below 25MHz. It features a 14 bit 65MS/sanalog-to-digital converter, a high-performance FPGA-based digital-down-converter and DSP-based demodulation circuitry. The AR2300 can be operated by remote control using an optional LAN controller. Digital I/Q output USB2.0 compatible isochronous transfer Digital I/Q output through USB Type-A Jack. Frequency range 25MHz – 3.15GHz (!GUI Software like Perseus Microtelecom It)

Link to: Download AR2300 Flyer for Tecnical features (PDF 909kB)

TOKYO HAM FAIR 2010 AOR BOOTH 2010年 東京ハムフェア AOR ブース  and Watch a collection of videos from the Tokyo Ham Fair 2010 (Related videos watch here …Icom, Yaesu, Kenwood, Other SDR, Loop Antenna and  Alinco DX-R8 SDR) by ThePacificocean777

Alinco DX-R8 150KHz to 35MHz are all mode radio wave receiver SSB CW AM and FM reception mode. More I/Q equipped
rear panel output port signal detection and freeware SDR Using software. The DX-R8 has the popular support behind, SDR! Connected to the PC to process digital data. The software itself uses a variety of  free software. (Google Jap/En!!)
(Info from the  web) And recently the Japanese version of SDR (free software) KG-SDR I can do it!

(Previous Report of 28/07/2010) – The new WR-G31DDC Excalibur by WiNRADIO, the Perseus and New Gemini by Microtelecom Direct Sampling Receivers, already displayed to Ham Radio Fair in Friedrichshafen 2010 (report of 28/07/2010)

WR-G31DDC Excalibur new Direct-Sampling Receiver by RADIXON Group Pty. Ltd. a fully-owned subsidiary of the Australian company Robotron. Robotron is a privately owned high-technology R&D and investment company, founded in 1983.- In the commercial market, the company operates under its brand name WiNRADiO ©  —- Link to: Radixon Group Pty. Ltd  official  Home-page

WiNRADiO © declares that the  new WR-G31DDC Excalibur receiver’s robust front-end (ndr: no preselectors filters!) is equipped with an ultrahigh-linearity amplifier which result in exceptional strong-signal performance. An advanced “dithering” technique eliminates spurios signals without significantly increasing the receiver’s nois floor. The superior 16-bit 100 MSPS analog-to-digital converter (ADC) provides exceptional performance over an extremely wide range of signals. Frequency range 9 kHz to 49.995 MHz three indipendent channels can be set separately.

Excalibur did not Preselector filters in the RF imput, has only (MW filter) a high pass for medium wave. Excalibur sample at 100 MHz (MSPS), but what really happens tuning signals around the frequency of “Nyquist” (100 : 2 = 50MHz) – [Note]: The figures SFDR (Spurious-Free Dynamic Range) declared by the producer is still about 107 dB. The Image Rejection 90 dB typ, with an MDS of -130 dBm @ 10 MHz/500 Hz BW. (Clik the image to enlarge  Ultra Low Jitter Clock features for the Gemini FPGA)

New GEMINI, HF/VHF Dual Channel SDR  at 200 MSPS – © Microtelecom  Srl Italy displayed in Ham Radio 2010 at latest Friedrichshafen —- Link to: HamRadio 2010 Photo Gallery by Ari Perugia

The new GEMINI receiver features two RF inputs signals simultaneously sampled by the Gemini A/D converter are numerically processed at 200 MSPS/channel by a high speed multichannel digital down-converter implemented in a FPGA of Xilinx’s most recent Spartan6 family – Ultra Low Jitter Clock for the Highest Dynamic Range up to VHFs! (including the value of SFDR – Spurious-Free Dynamic Range) – Each of the two RF front-ends are equipped with a six bands pre-selection filters bank ranging from 28 to 170 MHz. —- Link to: Microtelecom srl >Gemini official web-page

Preliminari Specificatons (typical at 145 MHz): RF Imput (2x) – Range 28/170 MHz – Imput IP3 +9dBm – Dynamic Range (500 Hz BW) 100 dB – Blocking DR (500 Hz BW) 123 dB – Internal Reference Clock 400 MHz TCXO – PC Interface USB2 port – Size 210 x 80 x 190 mm (WxHxL)

Leggi di seguito tutto il testo in Italiano and more …………..>

Continua la lettura di WR-G31DDC Excalibur Perseus Gemini AOR 2300 and DX-R8 Receivers, Ham Fair 2010

FTdx-5000 Review from RadCom June 10 by G3SJX – Here only some data and a summary

FTdx-5000 measured performance Source: RSGB RadCom  June, 2010 by G3SJX – Table 1*
[*Note]: here, only some of the many performances misured – View the RadCom Magazine to read the full review by Peter Hart) – !! IP3, IMD3, and Blocking figures were outstanding with the appropriate Roofing filters selected. !! The only area for concern is the receiver spurious signal rejection….

Sensitivity SSB 10dBs-n:n 7MHz band: IPO-1 →0.7uV (-110dBm) PREAMP-1 →0.18uV (-122dBm) PREAMP-2 →0.09uV (-127dBm)
Intermodulation (Spacing 15kHz) 2400Hz bandwidth 6kH Roofing USB 7MHz band: IPO-1 →IP3 +37.5dBm IMD 105dB PREAMP-1 →IP3 +26dBm IMD 105dB PREAMP-2 →IP3 +18dBm IMD 103dB
Close-in Intermodulation on 7MHz Band 500Hz bandwidth CW IPO-1:
Spacing2kHz (15kHz Roofing) IP3 -8.5dBm IMD 77dB – (6kHz Roofing) IP3 -4dBm IMD 80dB – (3kHz Roofing) IP3 +33dBm IMD 106dB – (600Hz Roofing) IP3 +37dBm IMD 109dB
Spacing10kHz (15kHz Roofing) IP3 +38dBm IMD 108dB – (6kHz Roofing) IP3 +39dBm IMD 109dB – (3kHz Roofing) IP3 +38dBm IMD 109dB – (600Hz Roofing) IP3 +38dBm IMD 109dB

The 9MHz IF rejection on most bands was greater than 100dB, but on 10MHz it was only 54dB, and on 7MHz it was 74dB. VRF front-end tuning improved these figures by 20dB. The first mixer image was only down by 55dB to 70dB but VRF improved this to better than 75dB.
Spurs on the synthesiser resulted in a number of unwanted receiver responses, notably at approx +/- 425kHz from the received frequency at only 65dB down on the VFO-A rx and at +/- 40kHz down by 85dB. VRF improves these figures but only marginaly on the higher bands.
Third order intercept (IP3), dynamic range (IMD3) and blocking figures were outstanding with the appropriate Roofing filters selected (See the Table-1*). The VFO-B receiver dynamic range is nont quite as good as the VFO-A receiver but is still very respectable.

Link to: The RSGB webpage – RadCom Magazine

La rejezione IF a 9MHz per la maggior parte delle bande risulta superiore a 100dB, ma sulla banda dei 10MHz scende a soli 54dB, e sulla banda dei 7MHz risulta 74dB.- L’uso del VRF tuning del front-end migliora queste figure di circa 20dB. L’immagine del primo mixer risulta attenuata solo da 55 dB a 70 dB, ma con il VRF si ha un miglioramento al valore di 75dB. Le spurie del sintetizzatore produce una serie di risposte indesiderate al di sotto di soli 65dB  rispetto all frequenza  ricevuta,  in particolare a circa +/- 425kHz dal centro della frequenza  sul VFO-A (main rx), ed ancora a +/- 40kHz sono al di sotto di 85dB. L’inserimento del circuito VRF migliora queste cifre, però solo marginalmente sulle bande più alte di frequenza.
L’intercept point di terzo ordine (IP3), la gamma dinamica  IMD3 e la dinamica di blocco hanno valori che variano in base alla banda passante  del Roofing filter selezionato (Vedere Tabella-1*). Il ricevitore del VFO-B (sub rx) ha a sua volta una dinamica non altrettanto buona come il  ricevitore VFO-A (main rx), ma comunque è  molto rispettabile. – !! Emerge dall’articolo di Peter  Hart una questione che lo preoccupa:  la effettiva capacità di rejezione di segnali spuri del  ricevitore A.
[Note]: RSGB Members Only can now download the June, 2010 RadCom Review  in PDF format.

DRW16 the SDR by Roke UK – Windows®-based GUI and API – Wideband HF Receiver with 4 Narrowband Channels

DRW16 the Roke SDR employs a 16 bit A/D conversion to directly digitise the entire HF spectrum…

Il DWR16 della Roke Uk (divisione della Siemens) è un  Ricevitore SDR a conversione diretta (16 bit), down conversion implementata in FPGA • Da collegare  con USB2 al PC o Laptop • Interfaccia GUI e API sotto Windows® • Non ha la variazione continua dei filtri DSP però  dispone di • 74 BW in steps da 56Hz a 32kHz selezionabili in modo diverso per ciascun canale. Si tratta di un apparato  della Roke Uk compatto e a basso consumo • Very low power 3.5W • Registrazione dei segnali I/Q oppure di quelli demolulati in formato .wav. – Particolari struttura dallo schema a Blocchi che si può vedere in dettaglio cliccando l’immagine qui sotto per ingrandirla.  (click for larger image) – The DRW16 © 2008 Roke Manor Research Limited.

Il software DWR in dotazione apre più sezioni dedicate ai vari controlli • Permette di ricevere, monitorare lo spettro e controllare 4 canali indipendenti, sintonizzabili rapidamente su tutta la banda HF • Tenere sotto controllo l’intero spettrro di frequenza da 9 kHz a 40 MHz con risoluzione di 1Hz. Il DRW16 è dotato di • Attenuatore automatico o manuale (0dB to -31dB in 1dB steps) • Controllo dell’AGC in automatico (fast medium slow) oppure in manuale con steps di 6dB, valori diversi impostabile per ciscun canale • Frequency Counter dedicato alla sintonia, si attiva anche di volta in volta per ciscun canale monitorato cliccando su una della 4 barre dati dei canali (distinte da 4 colori) che indicano per ciscuno: • Frequenza • Bandwidth • Mode • BFO • AGC • Gain • Level S-meter • ALC • Wav.

Link to: Download the Roke DRW16 Datasheet .PDF

ENG: DRW16 employs A/D conversion to directly digitise the entire HF spectrum, Down conversion FPGA, USB2 interface to a PC or laptop  for furter IF filtering, signal demodulation, spectrum display 4 indipendent receiver channels and full HF spectrum. The DWR16 is supplied with a Windows®-based application providing a user-interface for receiver control and signal processing of the received signals.
The interface displays and controls the following functions: • Attenuator: automatic or manual mode (0dB to -31dB in 1dB steps) • Signal level – • Centre frequency: 0 to 40MHz with 1Hz resolution) • Bandwidth: (32kHz to 56Hz with 74 bandwidths) • Demodulation (I/Q, AM, USB, LSB, ISB, CW, FM) • Gain control: automatic (fast medium slow) and manual (6dB steps) • Signal level • Audio output level control: automatic or fixed (2 settings) • Audio output • Recording: I/Q or demodulated signal in .wav format • GUI showing: Simultaneous monitoring and display of four narrowband HF channels and full HF spectrum • Four independent receiver channels tune over entire HF band. The DRW16 © 2008 Roke Manor Research Limited.

Switch BOX: is a automatic T/R switch senses for RTX and your SDR

Switch BOX della Elad: è una unità di commutazione dei collegamenti d’antenna tra un RTX ed un ricevitore SDR separati. Distribuita da WoodBoxRadio di IK3VIG, Beppe, è dotata di sensore di RF trasmessa (100W max)  che permette l’uso di un Ricevitore SDR come il PERSEUS, unitamente ad un qualsiasi Transceiver HF in modo automatico tramite un relay interno, che mette a massa l’antenna RX durante la trasmissione.  L’unità Switch BOX, consente di gestisce anche i segnali audio provenienti dal ricevitore o dal monitor del trasmettitore, permettendo un rapido ed agevole confronto di ascolto tra i due segnali così ricevuti. Usando la CAT dell’RTX, con una partizione di software sul PC per la funzione di sincronismo trà l’RTX e il Perseus, si ottiene un nuovo e performante transceiver.  Protezione: Switch BOX è dotato di uno scaricatore a gas che si inserisce sull’ imput di antenna.

Link to: Download the Connection diagram .pdf

ENG: SWITCH BOX by Elad, is a automatic T/R switch senses transmitted RF (100W max) and switches your
antenna from SDR receive (PERSEUS)  to transmit using a relay. It shorts your receiver antenna input to ground to protect your SDR (Official distribution by WoodBoxRadio, IK3VIG, Beppe). Instead of using RF sense to switch the antenna, a control line input lets your key/keyer or PTT line switch the antenna. A complete switch control is available for the audio path of receiver and transceiver. Using CAT of your RTX, with third parts software which provide a SYNC function between RTX and your Peseus SDR, you can make an outstanding and high performance transceiving operations. Protection: The SWITCH BOX provides gas discharge protection on the antenna input.

IC-R9500 professional wideband receiver

IC-R9500, il ricevitore professionale Icom permette una ricezione superiore entro la vasta gamma da 0.005 a 3335 MHz. L’eccezionale dinamica e le alte caratteristiche sull’intermodulazione vengono mantenute entro tutta la gamma HF con +40dBm di IP3 e 109dB di IMD a 14.100MHz (dati brochure Icom); Nelle VHF (50MHz) l’IP3 risulta +9.8dBm e a 620MHz +6.2dBm e fino a 2GHz a +5 dBm tipico.

Usa due chip DSP TMS 320C6713 serie di cui uno dedicato per una ampia gamma dinamica nello Spectrum Scope. L’indicazione panoramica può essere commutata fra larga e normale. Nella posizione normale l’escursione potrà essere predisposta fra ± 2.5 kHz e ± 5 MHz; Il ricevitore incorpora 5 filtri roofing selezionabili nei valori di selettività IF di: 3kHz, 5, 15, 50 e 240kHz;

Link: I0GEJ’s Ham radio News IC-R9500 page   Link to: ZS6YI’s User review on VA7OJ web pages

ENG: Icom is proud to announce the launch of the IC-R9500, its new flagship receiver. The IC-R9500 covers from 5kHz to 3335MHz; The IC-R9500 has +40dBm IP3 and 109dB dynamic range at 14.1MHz. IP3 performance is +9.8dBm at 50MHz and +6.2dBm at 620MHz (+5dBm (typical) from 30MHz to up 2GHz). Using a dedicated DSP unit improves the dynamic range of the spectrum scope. The IC-R9500 has four different spectrum modes such as normal/wide and centre/fixed width. The normal spectrum scope covers a range from ±2.5kHz to ±5MHz, has 5 independent roofing filters (240, 50, 15, 6 and 3kHz) for improved IF selectivity.

New features for the QS1R, QuickSilver and SDRMAX-II SDR Radio by Phil N8VB. Display max 50MHz panadapter!

QuickSilver SDR, the new features: Phil N8VB QuickSilver and SDRMAX-II, panadapetr widths selectable from 50kHz to 50MHz over USB, panadapter display is now flat as a board due to special FPGA code enhancement and other achievements (05.05.2008)

C’è stato un primo interesse, suscitato dalla FlexRadio System USA con il Flex-5000A, che è un Transceiver (rtx 100W) con architettura SDR (la stessa del vecchio SDR1000) cioè con l’ADC preceduto da un QSD che in quadratura converte i segnali RF a 9kHz (variabile fino a 20) da cui risultano poi i due segnali I/Q per il convertitore A/D a 24bit da avviace al Computer, però questa volta senza usare l’imput della Sand-Card;

Da fine 2007 è arrivato un nuovo prodotto tutto italiano: Microtelecom Srl di Udine, ha lanciato ilsuo Perseus un eccellente Ricevitore SDR di nuova generazione, a campionamento diretto a 80MS/s, interfaccia USB 2.0, valore i IP3 imput a +30dBm. Il software aggiornato di Perseus supporta la visualizzazione e registrazione da 200kHz a 800kHz di larghezza di banda, con reiezione di immagine di 100dB.
La realizzazione di Nico Palermo è completata on board con un ottimo front-end analogico con attenuatore da 0 a 30dB, un banco di filtri di preselezione passa banda e di un pre-amp ad alta dinamica, è fornito con un apposito software per Windows (anche Vista) con ottima grafica. Si può dire che Perseus risulta essere un ottimo progetto con ingegnerizzazione già consolidata e con un buon riscontro sul mercato anche internazionale, che risulta in forte espansione.
Link to: Microtelecom Perseus Official Web page

Le novità non finoscono qui, la competizione tecnologica si arricchisce ora con l’arrivo del QS1R QuickSilver,  un SDR progettato da Phil Covington, N8VB, che si basa su approccio molto simile a quello del Perseus, con la conversione ADC in antenna. Qui si usa lo stesso LTC2208, però a 125MS/s con 16bit, della Linear Technologies, una nuova ed efficiente FPGA HDL Altera Cyclone III EP3C16; La banda di ricezione: BNC LPF imput 15kHz to 55MHz; Dispone di un SMA direct imput 15kHz to 300MHz, con possibilità di integrare espansioni di funzioni; Rilevante è il fatto che, date le specifiche di progetto ADC e FPGA e con il Software (open source GPL3) SDRMAX-II oltre al controllo, filtraggio e demodulazione il QS1R supporta la visualizzazione e registrazione su HD di una larghezza di banda selezionabile da 50kHz fino a 50MHz.
Link to: Ham Radio news by N9VV Home page

Sul sito QS1R sono riportate le specifiche (Standard VERB) del progetto QS1R: Clipping RF Level: +9 dBm (~S9+80db); Max Display Bandwidth: 4MHz; I/Q Image Rejection: +90 dB; MDS (500 Hz): -122 dBm @ 14MHz; BDR: 125 dB; Novità del 15.04.2008: è stata implementata l’interfaccia Dll ed ora si può usare anche il software (IT) WinRad di I2PHD e si dice che anche l’HRD di Simon. Sono prevsite a breve aggiunte: un Bandpass and RF Amp-Attenuator board, di un QS1T DUC Trasmitter Add-on board e altre Planned Add.
Link to: WinRad di I2PHD Web page  Link to: QuickSilver Official Web

ENG: The QuickSilver QS1R receiver is one of the most advanced Open Source Direct Digital Conversion (DDC) receiver boards on the market today. It features a LTC2208 125 MSPS 16 bit “at the antenna” ADC from Linear Technologies and an Altera Cyclone 3 FPGA. The QS1R covers the frequency range of 15 kHz to 55 MHz (direct 300MHz!). Connectivity to the PC is through a high speed USB 2.0 interface. >> See to up Link.