IC-7200 Rugged manpack styling. Two type IF Filters. MAIN UNIT Design and architecture. Link to Test review Radcom Uk

IC-7200: Triple conversion superheterodyne system:
Intermediate frequencies 1st: 64.455 MHz, 2nd: 455 kHz, 3rd: 15.625 kHz.
(Clik for inlarge the MainUnit)

IF Filters type: a) DSF753SBF-D64006GQ 64.455 MHz 1st IF 4 Pole Roofing Filter 6kHz-BW 3dB – b) CFWS455HT 2nd IF Ceramic Filter 6 Elements Ladder Type, 6kHz-BW 6dB/ 18kHz-BW 50dB. —-  The MAIN UNIT is the core of IC-7200.
Test review Radcom UK  IC-7200 by G3SJX -—> Check the Link below

[Note - radiocronache.com®]
The roofing filter and the Ceramic Filter is not a ultimate selectivity on the this tranceiver. The designer uses the DSP process to define the selectivity of the receiver for each supported emission type. The purpose of the 6kHz roofing  filter reduces the statistical likelihood that strong undesired signals well outside BPFs, to suppress images produced in the first mixer. The Ceramic Filter on the 2nd IF 455kHz to suppress images produced in the 2nd IF mixer will enter the IF chain and over-range the ADC Codec. As long as  the ADC is operating in its linear range, the DSP IF filter will do its job.
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Design and architecture:

The RX signals are passed through one of 9 BPFs on the RF UNIT.  The BPF for 50 MHz band contains a separate Pre-amp to make up the loss for high sensitivity on this band. While the Main Pre-amp function is activated, the RX signals from the BPF are applied to the noiseless feedback AMP 2SC5551F. This Pre-amp provides low-noise, high RF gain and good IP characteristic. The amplified or not RX signals are entered to the MAIN UNIT, then applied on the 1st mixer 2SK1740 x4 junction FETs. A quad-structured 1st mixer circuit, provides high enough intercept point. RX signals are mixed with the 1st LO signals from the 1st LO AMP 2SC3357 to be converted into the 64.455 MHz 1st IF signal. The 1st IF signal is filtered by the 6kHz Roofing Filter (FI541 – FL421) to remove the RX frequency signal and 1st LO signals, and amplified by the 1st IF AMP 3SK264. The amplified 1st IF signal is applied to the 2nd duble balanced mixer HSB88WS to converted into the 455 kHz 2nd IF signal.
The 2nd IF signal is filtered by Ceramic Filter CFWS455HT (FI601) and amplified by 3SK264 x2 IF AMP and 2SC4081 BUFF, then applied to the 3rd mixer TS5A2053. – The converted 15.625 kHz 3rd IF signal are entered to the ADSP-BF532SBSTZ400 on the DSP section, passed through the (ADC/DAC) Codec AK4620B. – Digital IF DSP for: Twin PBT, Noise Reduction, Manual Notch, Automatic Notch, NB etc. –[radiocronache.com®]
Link to: Test review Radcom UK Jan. 09 by G3SJX (to-SRSAB.SE) PDF 1.5MB
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DE: IC-7200 moderne technik ZF-DSP. AGC-Schleife. Digitales ZF-Filter. Twin PBT. Digitale Rauschminderung. Der IC-7200 ist ein preisgunstiger, robuster Kurzwellwntransceiver inklusive 6 m im “military look” fur Einsteiger und insbesondere fur den Einsatz unterwegs.

IC-7600: 1st analog mixers, 2nd IF I/Q rejection mixer and DSP – Download Broshure Eng. and USB Driver Installation Guide

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IC-7600 the flagship’s linage. Employ 1st IF analog mixers, 2nd IF rejection mixer (SDR -I/Q mixer type) and digital signal processing DSP.  It is most interesting that the new Transceiver Rohde & Schwarz® 4100 HF radio family also employs this architectur. (Report/image  www.radiocronache®)

Download the Broshure Eng. language and the new USB Driver Installation Guide, update 02/26/09.  See the Table: Comparison of  key features by Adam, VA7OJ

Link to: Download the Icom.co.jp  new Broshure Eng. lang. PDF (! 4.23 MB)
Link to: Dowload the IC-7600 new USB Driver Installation Guide Eng. PDF
Link to: Table 1: Comparison of key features Icom radios by Adam, VA7OJ

IT: IC-7600 ha lo stesso circuito del IC-7800 e IC-7700 non avendo più lo statio IF a 455kHz e quindi un terzo mixer come il Pro3. Questo evita sia il rischio di altri seganli spuri che l’ulteriore fase di rumore del mixer, fattori di distorsione e di intermodulazione.
IC-7600, utilizza un sistema a doppia conversione superheterodina, con l’impiego di un mixer a reiezione d’immagine (tipo SDR I/Q  mixer) nello stadio della 2nd IF che migliora la “imband IMD”.  Il sistema a doppia conversione  necessita  di maggior tecnologia però si riduce notevolmente la distorsione del segnale e la relativa elaborazione a media frequenza con il risultato di ottenere un segnale di miglior fedeltà all’ingresso del codec A/D e quindi all’unità di elaborazione digitale DSP Unit. TMS320C6726BRFP – 266MHz clock – 32bit floating point – Capacity = 1600MFLOPS
[Note] Nel cosidetto I/Q Mixer il segnale di 1st IF viene splittato in due segnali di uguale frequenza per essere amplificati da due IF AMPs e poi inviati al 2nd mixer a reiezione di immagine. Le due componenti di questo segnale RX IF, come si vede  dallo schema a blocchi, vengono miscelati con due segnali alla stessa frequenza attraverso lo split e sfasamento dell’OL di 90 gradi. I segnali IF sfasati di 90 gradi I (In fase) Q (Quadratura) così ottenuti vengono ricomposti da un rifasatore e poi elaborati digitalmente, attraverdo il convertitore A/D, dal DSP Unit, che per il progetto richiede ottime conoscenze tecniche ed un elevato sviluppo del software residente nel circuito del DSP Unit, nello stesso Transceiver che è complessivamente gestito dal software dal Main CPU.

È molto interessante il fatto che la nuova serie di radio HF 4100 della Rohde & Schwarz® impiega una simile architettura. Infatti il Transceiver R&S® M3SR Serie 4100, utilizza un sistema a doppia conversione superheterodina e combina l’ottima gamma dinamica di una radio con ottimo mixer analogico e dall’ultimo sistema di processo ed elaborazione digitale del segnale IF e del segnale audio. La frequenza della 2nd IF a 48 kHz è campionata, digitalizzata ed elaborata utilizzando i processori di segnali digitali DSP (nell’IC-7600 la 2nd IF è 36 kHz mentre sull’ IC-R9500 è proprio a 48 kHz).
L’IC-7600 ha anche un doppio loop AGC, uno analogico ed uno digitale entrambi controllati dal cuore del circuito IF DSP. Il segnale necessario all’AGC viene prelevato dopo il filtro digitale, così si previene l’eventuale bloccaggio dell’AGC dovuto a dei forti segnali adiacenti (“pumping” the AGC). Da notare che tanto il filtro digitale IF (Twin PBT, IF Shifth, Twin Peak ecc.) che il filtro notch (NOTCH, NR, NB ecc) vengono elaborati digitalmente nel DSP e sotto controllo dei loops dell’AGC.

ENG: IC-7600 the flagship’s linage, eliminate the 455 kHz IF stage and third mixer, with their attendant risks of spurs, additional phase noise and IMD degrade. IC-7600 employs a double conversion superheterodyne system, which has an image rejection mixer (SDR I/Q mixer type) for the 2nd mixer stage improve inband IMD.
[Note] SDR I/Q mixer: The filtered 1st RX IF signal is amplified by two 1st IF AMPs, then splitted into two before being applied to the 2nd mixe, as a image rejection. Each divided signal RX IF signal is mixed with 2nd LO signals to be converted into the 36 kHz 2nd RX IF. One of the LO signal is 90 degrees phase shifted before being applied to the 2nd mixer, and the converted 2nd mixer IF is 90 degrees phase shifted too. – I (Inphase) Q (Quadrature) signals are buffer and amplified by 2nd IF AMP. Then the 2nd RX IF signals whose phase shifter, then composed by the composer.The composed RX IF signal is amplified, then entered by the A/D converter to the DSP Unit. – TMS320C6726BRFP, 266MHz clock , 1600MFLOPS!
It is most interesting that the new Transceiver Rohde & Schwarz® 4100 HF radio family also employs this architecture. The R&S® M3SR Series 4100 employs a double conversion superheterodyne system, combines the unmatched dynamic range of radios with analog mixers with the latest in digital IF and audio signal processing. The second IF frequency of 48 kHz is sampled (IC-7600 has 2nd IF 36 kHz, IC-R-9500 has 48 kHz), digitized and processed using DSP digital signal  processors.
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IC-7600 User Manual in English is released. Here now at least you can read the new features summary

User Manual in English version for the IC-7600 is released by Icom Inc. Jp.
Here now at least you can read the new features summary by www.radiocronache.com® —- (See the Link below for download User Manual)

Built-in a high-quality DSP-based Baudot RTTY modulator /demodulator and direct PC keyboard connection capability for RTTY and PSK operations without a PC. RTTY operation can be performed without an external RTTY terminal, TNC or PC. Pre-set characters can be sent using the RTTY memory. The contents of the RTTY memory/received signal can be saved into the USB-Memory. Two data formats, Text and HTML, are available for PC data storage.
Built-in a high-quality DSP-based PSK encoder /decoder is built-in to the IC-7600. When connecting a PC keyboard, BPSK (Binary Phase Shift Keying) and QPSK (Quadrature Phase Shift Keying) modes are available for PSK. The transmission contents can be typed before being transmitted. The contents of the PSK memory/received signal canbe saved into the USB-Memory.
[Note]: When a PC keyboard is connected to [USB] connector on the front panel, the RTTY/PSK/CW memory contentst nad the file name can also be edited from the keyboard. In this case, a USB hub is required.

Twin PBT® operation: in SSB/CW/RTTY/PSK/AM the PBT (Passband Tuning) electronically narrows the IF passband width by shifting the IF frequency slightly outside of the IF filter passband to reject interference. The IC-7600 uses DSP for the PBT function. Moving both [TWIN-PBT] controls to the same position shifts the IF both above and below the received frequency.
DSP filter shape (Soft/Sharp): The type of DSP filter shape for each SSB, SSBD (data) and CW can be selected independently from soft and sharp. IC-7600 DSP use the TMS320C6726BRFP at 266MHz.
Roofing filter selection: The IC-7600 has 3, 6 and 15 kHz roofing filters at the 1st IF frequency. The roofing filter provides interference reduction from nearby strong signals.

Large LCD with LED backlight multi-function Display. High resolution spectrum scope screen, several times to select the scope span: ±2.5, ±5.0, ±10, ±25, ±50, ±100 and ±250 kHz are available. This DSP-based spectrum scope allows you to display the frequency and relative signal strength  of received signals on the strengths of signals. The IC- 7600 has two modes for the spectrum display – one is center mode, and the other is fixed mode. In addition, the IC-7600 has a mini scope screen to save screen space.

Dualwatch operation. Dualwatch monitors 2 frequencies with the same mode simultaneously. During dualwatch, both frequencies should be on the same band, because the bandpass filter in the RF circuit is selected for the main readout frequency.

Push [MAIN/SUB] to enables the sub band access when changing the frequency to Main dial, etc. in sub band.
Adjust the [BAL] control to set a suitable audio signal strength balance between the main and sub readout frequencies. S-meter shows the combined signal strength. The dualwatch function is convenient for tuning the transmit frequency while monitoring both frequencies used for transmitting and receiving. Split frequency operation allows you to transmit and receive in the same mode on two different frequencies, on the main and sub readouts.

USB Rear connector. [USB] (Universal Serial Bus – B type) Connect a USB cable to be used for the modulation input, the transceiver operation with PC, the received audio and the decoded character import to the PC. Icom HP (http://www.icom.co.jp/world/support/index.html) gives the USB driver and the installation guide download service.
Sets the input modulation level of the [USB] connector from 0% to 100%  in 1% steps on the Level set mode. The received audio output level from [USB], cannot be adjusted with the [AF] control.

Link to: Download Icom Inc. Jp  User Manual English .pdf (14.87MB)

[Note] :
Please see te Icom official documents and data for more detail and totals feature
Icom, Icom Inc. are registered trademarks of Icom Incorporated  (Jp)

IC-7600 new Web Page Icom.co.Jp website! Download Broshure Jp. Clik images for big enlarge

IC-7600 features, User Manual Jp, and Broshure  Jp, are on the Icom Japan Head Office website.  [Note] : Clik the images to enlarge and see links bottom
The IC-7600 HF +50 MHz SSB / CW / RTTY / PSK31 / AM / FM) 100W  Transceiver for DX’er evolved! (source: Icom web) – Unfortunately, the web page is in Japanese !! This necessary translation is arranged (sorry for approch) by www.radiocronache!!
IC-7600。 HFオールバンド +50MHｚ（SSB/CW/RTTY/PSK31/AM/FM）100W トランシーバー。 フラグシップ機の血統を受け継ぎ DX’erのために進化したHF+50MHｚトランシーバー。

Three 1st IF filter. 3kHz, 6kHz, and 15kHz for the 1st IF filter bandwidth to pass the appropriate mode (FM mode 15kHz only) can be changed.
The filter are optimized for lowest IMD and each is mounted on a plug-in daughterboard.
This is high technology from Icom flagship IC-series!

The new Transceiver including 3 roofing with 3kHz bandwidth 1st IF filter. The receive adopt a simple method: Duble Superhet (2 conversion: 1st IF 64.455MHz  2nd IF 36kHz ) idem to IC-7800/7700 to achieving superior IMD performance. In particular, the  in-band IMD (Inter Modulation Distortion) significantly improved. The 1st IF filter 3kHz  bandwidth, you can reduce the effects of near-frequency signal. IC-7600 DUALWATCH® in the same band, is the same level of quality and the gain in the main and sub strength signals  simultanely (VFO-A/B).

- Features the latest IF DSP technology – Advanced IF DSP system – AGC loop management prevents distortion and blocking of nearby signals.
Two 32-bit floating point DSP’s, one dedicated for spectrum scope, the other for the IF-DSP and capability of the performance by up significantly;

N.1) IF DSP Processor (above): TMS320C6726BRFP – 266MHz clock – 32bit floating point – Capacity = 1600MFLOPS – N. 2) DSP Spectrum Scope Display (bottom)  TMS320C6720B – 200MHz clock – 32bit floating point – Capacity = 1200MFLOP -  [Note] The IC-756PROIII has Processor ADI DSP  150MFLOPS – 50MHz clock and Analog Spectrum Scope!
Multi-function spectrum scope dedicated to DSP with a dynamic range of signals and can greatly improve the measurement accuracy and response with adjustable resolution bandwidth RBW). The highly IC-7800/7700 are close in performance and function – RTTY / PSK31 operation without PC connection, requiring a USB keyboard. Digital twin PBT to tailor your IF passband – Adjustable IF notch filter – Digital noise reduction (NR) – Digital voice recorde/play-back facility – The advanced DSP allows you to set flexible the shaping filter, “Sharp” and “Soft” or bandwidth control used -
The IC-7600 as a USB port for CI-V format PC control and baseband (audio) input/output.

The PA Unit  uses 2 X RD100HHF1 MOSFET’s  IMD particular characteristics and  excellent linearity and low distortion, power output to 100W.

High-speed ATU auto antenna tuner covered to 50MHz belt.   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The multi function meter of variegated information that displays the batch: Vd (final FET drain voltage) in addition to S/Po/ALC/COMP/SWR/Id (final FET drain current), and TEMP (temperature of the PA circuit) can be displayed.

.. The screenshot showing the new Compression adjustment menu with Main Dial (no separate knob)

本機のファームウェアは機能の拡張や改良のため、バージョンアップをすることがあります。 …….. This machine use the firmware for expansion and improvement of the functions. Using a commercially available USB memory, firmware upgrade.

Link to: Some thoughts on the IC-7600 page by Adam, VA7OJ (English lamg.)

Link to: Icom.co. Jp Download:  User Manual and Broshure (Japanese lang.)

Link to: Icom releases the HF+50MHz transceiver IC-7600 (English lang.)

[Note] : Please see te Icom official documents and data for more detail and feature
Icom, Icom Inc. and the logo are registered trademarks of Icom Incorporated  (Jp)

R&S® M3SR Series 4100 SDR HF Radio Family – Analog mixers and digital IF and audio signal processing

Rohde & Schwarz M3SR® Series 4100 of HF radios represents a new, innovative and versatile generation of software defined radios (SDR).

Rohde & Schwarz ha sviluppato una serie di apparati di nuova generazione per i sistemi di comunicazione professionali, tipiche applicazioni a bordo ni navi, per il controllo di traffico aereo, per ambasciate e per applicazioni tattiche militari. Da quanto si legge nella broshure la struttura della R&S® M3SR Series 4100, pur definita a ragione SDR, sembra andare ancora sul sicuro. Niente RF Sampling (ADC/FPGA), ma impiego combinato della collaudata tecnologia RF analogica (Analog Mixers), dove R&S® è eccellente da sempre, seguita  da una seconfa IF a 48 kHz che viene campionata, digitalizzata e processata con l’impiego dei recenti sistemi DSP numerici implementati R&S® all’interno del’apparato.  (Per esempio si potrebbe dire una struttura a due conversioni + IF DSP simile a quella del’ IC-7700 reiterata da Icom anche sul nuovo IC-7600! in arrivo)

ENG: The R&S® M3SR Series 4100 combines the unmatched dynamic range of radios with analog mixers with the latest in digital IF and audio signal processing. The second IF frequency of 48 kHz is sampled, digitized and processed using digital ignal processors. This means that a wide range of IF bandwidths is available in all modes with high selectivity and optimized for voice and data communications. Digital signal processing also provides functions for noise suppression. The individual radio lines can be occupied by any of the waveforms supported by the R&S®M3SR Series 4100   including:
Voice (SSB, AM, FM) – Radio teletype (RATT) – Modem (STANAG 4285, STANAG 4539) – Automatic link establishment (ALE-2G/3G) – Tactical data links(Link-11, Link-22)

FK4120/4140 è  un rimarchevole sistema di preselettore – optional plug-in modules -  con cinque circuiti LPF da 0 Hz a 1.5 MHz e poi digitally tracking bandpass filters da 1.5 MHz a 30 MHz con 20 dB o 40 dB edge steepness at 10 % frequency offset. Questo per accrescere la selettività dei canali sia in trasmissione che in ricezione. Si migliorano molto i parametri di IMD di 2nd e 3rd ordine, la rejezione di IF e di immagine, l’immunità alla modulazione incrociata. Nella diretzione TX il rumore di fase viene soppresso con un basso valore tipico migliore di -165 dBc/Hz !   (Per esempio, negli RTX per Radioamatori, si può trovare il DIGI-SEL  Unit, Icom o il VRF+ uTune, Yaesu che combinati con gli ATU Unit, possono avere funzioni e performance abbastanza simili! )

Link to: Download the M3SR 4100 Brochures and Data Sheets – 2.8 MB PDF

ENG: The R&S® FK4120/FK4140 digitally tuned HF selectors are optional plug-in modules for the radios of the R&S®M3SR Series 4100. They increase the selectivity of the transmit and receive paths. Receiver parameters such as 2nd and 3rd order intercept, IF rejection, image-frequency rejection and crossmodulation immunity are significantly improved. In the transmit direction, the TX phase noise is suppressed to produce typical values as low as –165 dBc/Hz.
- Five-circuit lowpass filter (0 Hz to 1.5 MHz) for receive frequencies below 1.5 MHz
- Digitally tuned tracking bandpass filters (1.5 MHz to 30 MHz) with 20 dB or 40 dB edge steepness at 10 % frequency offset. – (for Ham radio See the DIGI-SEL  Icom or VRF+uTune Yesu + the ATU Units)

IC-7700: Icom Japan have released the latest firmware V1.04 on Dec 11, 2008

IC-7700 New Firmware Update – Icom Japan have released the latest firmware V1.04 on Dec 11, 2008.

Un nuovo Firmware Ver. 1.04 per l’IC-7700 è stato rilasciato dalla Icom Japan Global Support  ieri 11 Dicembre 2008.

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La Icom dichiara che qusta nuova release apporta miglioramenti nel software che gestisce le performance nel DSP-Unit.  Le prime impressioni fanno osservare un miglioramento molto fine nel funzionamento [ NR] che ora sembra tracciare i picchi in modo un po ‘più veloce e attenuare un po’ meno i toni alti rispetto all  ver. 1.03 – Altra segnalazione riguarda  migliore comprensione durante la ricezione di BCC -SW in AM ascoltati in modo SSB/ECSS per rilevare segnali DX deboli, ora meno soggetti a distorsione da Qrn. 

Link to: ICOM.co.jp – World Support official web page

ENG:  Major points of update from Ver.1.03 to Ver.1.04: Improvements in the software performance for the DSP UNIT
Noted a very subtle improvement in [NR] operation. The NR seems to track voice peaks a little faster and attenuate highs somewhat less than in ver. 1.03.
Noted now listen to AM BBC WS on SSB/ECSS during the day during non DX time and hear it without the previous annoying distortion, as the audio no created loud transients of high notes. – - -  (Credit: Icom.co.jp/world/ Support)

IC-7700 RF UNIT, 2nd Mixer as a image rejection. Circuit Description

IC-7700 RF UNIT, 2nd Mixer as a image rejection, Circuit Description. Note the large toroidal coils, BPF bank
Il segnale convertito di 1st IF viene poi filtrato da uno dei tre Roofing Filters (3-6-15 kHz). Il segnale di 1st IF filtrato viene suddiviso in due prima di essere applicato al 2nd Mixer che è un Mixer ad alta rejezzione d’immagine IF.
Ciascuno dei due segnali splittati dalla 1s IF vengono mixati con i segnali del 2nd OL provenienti dal PLL UNIT, per essere convertiti nella 2nd IF a 36kHz. Uno dei segnali di OL  è spostato in fase di 90 gradi prima di essere applicato al 2nd Mixer (un 9A41-G), e così anche uno dei segnali convertiti di  2nd IF risulta con fase diversa di 90 gradi rispetto all’altro.
Questi due segnali convertiti di 2nd IF, sfasati tra loro di 90 gradi, sono ricombinati per la differenza di fase da un  sommatore (NJM074M) per ottenere così un unico segnale lasciando fuori gli altri segnali non coincidenti. Il segnale di 2nd IF ricombinato viene  fatto entrare nell’ADC (AK5394) per essere convertito a 24-bit in dati seriali. I dati seriali (digitali) sono applicati al DSP (TMS320C6727), sulla MAIN UNIT.

Link to: Adam, VA7OJ’s IC-7700 User Review web page

ENG: The converted 1st RX IF signal is then filtered bay one of 1st IF Roofing Filters (3-6-15 kHz).
The filtered 1st IF signal is splitted into two before being applied to the 2nd Mixers, as a image rejection Mixer. Each divided 1st IF signal is mixed with 2nd LO signals from the PLL UNIT, to be converted into the 36kHz 2nd RX IF signal. One of the LO signal is 90 degrees phase-shifted before being applied to 2nd Mixer (9A41-G), and the converted 2nd RX IF is 90 degrees phase-shifted too.
These converted 2nd IF signals whose phase is different each other are phase-shifted by the phase shifter, then composed by the composer (NJM074M). The composed 2nd IF signal is amplified by another 2nd IF AMP, then entered to the ADC (AK5394) to be converted into the 24-bit serial data. The serial data is applied to the DSP (TMS320C6727) on the MAIN UNIT.

Icom, Icom Inc. are registered trademarks of Icom Incorporated  (Jp) – Image (c) i0gej’s radiocronache

IC-7700: Product Review from QST Magazine. Report some data – Link to PA1HR’s Review data table

IC-7700 QST Review and PA1HR’s QST data table. Sulla rivista della ARRL, QST di Ottobre 2008 modificato nel QST di Maggio 2009, si trova la Recenzione del IC-7700 HF 50MHz 200W Transceiver della Icom, con risultati molto interessanti. L’apparato è stato recensito da Rick Lindquist, WW3DE, National Contest Journal Managing Editor.
Nelle 7 pagine dell’ampio articolo di QST, oltre alla recensione è interessante leggere anche quanto scrive su un inserto ”Prospettive degli operatori di Contest”   Dave Patton, NN1N Membership and Volunteer Programs Manager.
Nella Tabelllina inserita qui sopra sull’immagine, invece, sono riportati  alcuni significativi dati, tratti dalle recensioni del IC-7700, IC-7800, FT-2000D e Elecraft K3, nelle riviste QST della ARRL. Queste recenzioni tecniche meritano di essere lette per intero sui vari numeri del QST Magazine per un confronto completo e sistematico di tutte le performance dei più recenti apparati : Icom – Yaesu – Elecraft - FlexRadio;

Update news: Interestingly the summary made by Hans, PA1HR’s with the data QST review, use the link below from “review table” (vedere una interessante tabella di raffronto dati di QST dei più noti RTX  con il Link qui sotto)

Link to: Hans, PA1HR’s HF RTX and RX  QST Review table
Link to:   ARRL Home-Page – www.arrl.org

NB: ARRL Members Only can now download the October, 2008 QST Product Review online in PDF format.

ENG: Some data drawn from ARRL product reviews are summarized in the table on image. These reviews are worth reading in their entirety, so as to obtain a systematic comparison between the most recent rigs produced by Icom, Yaesu, Elecraft. – This Icom is reviewed by Rick Lindquist, WW3DE National Contest Journal Managing Editor. Interestingly, in addition to the review, is also what he writes on the article-insert “A Contest Operator’s Perspective” from Dave Patton, NN1N, Membership and Volunteer Programs Manager.

La produzione del transceiver PT-8000 è stata interrotta; The manufacture of the PT-8000 product line has been discontinued

La produzione del Transceiver PT-8000 è stata interrotta! – La Hilberling il 24 luglio 2008 ha rilasciato nel suo sito web la inaspettata e improvvisa news: “Die Produktion der PT-8000 Gerateserie ist eingestellet worden” A causa dei continui ostacoli che dobbiamo superare per garantire la conformità alle specifiche governative e regolamentari a livello di Unione Europea imposte ai fabbricanti, è stato necessario procedere, per ogni modifica su questo transceiver di alte prestazioni, a una costante procedura di adeguamento alla progettazione. Gli obbiettivi di high-design che avevamo fissato per il PT-8000 possono pertanto essere pensate per poche unità prototipo. Invece, per garantire tale elevato livello senza limitazioni in un programma di produzione di serie con tante richieste urgenti di molti venditori, pongono difficoltà che non possono essere superate mantenendo un livello di costo che sia accettabile. Noi siamo molto grati per il grande interesse dimostratoci, mentre questo tentativo era in corso.
Link to: Hilberling Web News Update 24.07.2008
Link to: I0GEJ’s Ham Radio News PT-8000 page

ENG: (by forum Hilberling) The manufacture of the PT-8000 product line has been discontinued.
Due to the constant obstacles which we must overcome in ensuring compliance with EU-wide governmental regulations imposed on manufacturers, we were required to make constant design changes to this top-quality transceiver. The very high design goals which we had set for the PT-8000 could be fulfilled in a few prototype units. However, guaranteeing this high standard without limitations in a series production program with many vendors runs into difficulties which cannot be overcome at a cost level which is still acceptable.We are most grateful for the great interest shown in us whilst this project was underway

IC-7800 Update Firmware Ver. 2.12, Improved the DSP Unit

Firmware Update on the IC-7800 Ver. 2.12; La Icom jp world support, ha rilasciato il 12.06.2008 la nuova Ver. 2.12 del Software per il transceiver IC-7800. Come si legge dalla immagine (da ingrandire) i miglioramenti interessano l’aumento delle performance del DSP Unit. Per aggiornare l’apparato leggere il manuale di istruzioni con cura, si suggerisce di inserire prima tutti i precedenti aggiornamenti rilasciati.
Utilizzare l’alimentazione con un UPS inserito, l’interrutore [ON] generale sul retro acceso, spegnere solo l’interruttore sul frontale  ed evitare così che manchi tensione durante la procedura di aggiornamento. 

Link to: Icom.co.jp official support web site    Link to: I0GEJ’s Ham radio News IC-7800 page

ENG: Major points of update from Ver.2.11to Ver.2.12: “Improved software performance for the DSP Unit“ 
NEVER turn off the power from the back without shutting down the radio first (front button). These radios should be run off a UPS (Uninterruptible Power Supply); Never cut off power supply while updating firmware! Before starting the download, please read through “Section  (UPDATING THE FIRMWARE)” of the IC-7800’s instruction manual.
NB: there are actually two versions of the IC-7800 manual on theirwebsite, and which version you get appears to be related to whether you usethe search facility or follow their links. The older version has a code on the bottom of the page which reads A-6328H-1EX-4-1. What I assume to be the newer version has the code A-6328H-1EX-8-1, but unfortunately it is still dated 16/10/2007.