[UK-CONTEST] OT-Dxpedition

Thu Apr 2 12:46:38 PDT 2009

I undersatnd there is no such rig as the pro iv. The IC7600 replaces the 
pro111. I like the look of it anyone bought one yet?
73 Pete G3KNU
----- Original Message ----- 
From: "Adrian Rees (MW1LCR)" <rees.a at btconnect.com>
To: "'Clive Whelan'" <clive.whelan at btinternet.com>; "'UK Contest Reflector'" 
<uk-contest at contesting.com>
Sent: Thursday, April 02, 2009 4:26 PM
Subject: Re: [UK-CONTEST] OT-Dxpedition


> Came across this one as well........on a US List.
>
>
> Subject:  Icom 756 PROIV is coming out/CW Support?
>
> Looks like more of the great stuff you would expect from ICOM.  Better 
> receive characteristics, brighter display, and integrated support for 
> digital modes like PSK etc.
>
>
>
> What I don’t understand is the following statement:
>
> Optional CW module allows for unparalleled CW Integration through computer 
> software.  CW operators will no longer need to know CW to operate this 
> legacy mode.
>
>
>
> Does this mean that the ICOM PRO IV will no longer support CW?
>
>
>
> 73 K6WRJ
>
>
>
> Below is the complete text:
>
>
>
> The 756PRO Series Legacy Continues to Grow
>
> Icom and the renowned IC-756PRO series continue to make ham radio history:
>
> First 64-bit floating point DSP transceiver
>
> First transceiver with customizable filter shapes. There were no optional 
> filters to buy, for none were needed.
>
> First mid-class HF transceiver with +36dBm-class third-order intercept 
> point*
>
> First amateur HF transceiver with a large TFT color LCD
>
> For the new IC-756PROIV, Icom’s combined the cutting-edge receiver 
> technology of the IC-7800 with the familiar ergonomics of the IC-756PROIV.
>
>
>
> Take your DXing to the next level with Icom’s IC-756PROIV.
>
> (*in the 14MHz band)
>
>
>
> The 756PRO Forth Generation’s Features
>
> Receiver gives +36dBm third-order intercept point*
>
> Using receiver design techniques introduced in the IC-7800, Icom’s 
> engineering team focused on producing a distortion-free, 
> high-dynamic-range. To achieve this goal, Icom used higher-grade 
> components in vital receiver sections of the IC- 756PROIV.
>
> * Under the condition of receive frequency 14.2MHz, input frequencies 
> 14.3MHz and 14.4MHz, Pre-amp OFF, mode USB BW: 2.4kHz
>
>
>
> Large inductors
>
> The IC-756PROIV uses large inductors instead of small coils in the 
> bandpass filter (BPF) stage, because small coils sometimes cause magnetic 
> saturation in the BPF stage. Large inductors can handle both strong 
> signals and weak signals with lower distortion.
>
>
>
> Low-distortion BPF switching
>
> The BPF switching circuitry is one of the critical points in a receiver 
> where distortion can be produced by strong out-of-band signals. Distortion 
> at this early receiver stage then propagates throughout the remaining 
> stages and cannot be removed by signal processing. The IC-756PROIV uses 
> low distortion diodes with wide frequency characteristics that prevent 
> formation of distortion components in the BPF stage.
>
>
>
> Fundamental-type 64MHz roofing filter
>
> The IC-756PROIV uses a fundamental mode monolithic crystal filter for the 
> roofing filter. Although it’s more expensive than overtone-mode filters, 
> the fundamentalmode filter has a better shape factor and is less 
> susceptible to intermodulation distortion under strong signal conditions. 
> This is the same 15kHz crystal filter used in the IC-7800 roofing filter 
> circuit.
>
>
>
>
>
> Two newly designed preamplifiers
>
> To minimize distortion and maximize dynamic range, the IC-756PROIV 
> preamplifiers use the same basic circuit design as the IC-7800 
> preamplifiers. Preamp-1 is a noiseless feedback design, with push-pull 
> amplifiers. This design has a high intercept point and covers a wide 
> frequency range. Preamp-2, which uses bipolar transistors for higher gain, 
> is ideal when you use separate low-efficiency receiving antennas such as 
> small loops or Beverages.
>
>
>
>
>
>
>
> Real time spectrum scope with mini scope function
>
> The real time spectrum scope is now an indispensable tool for top 
> performing HF radios. The IC-756PROIV’s spectrum scope adds a mini scope 
> function, as requested by many PROII users. The mini scope allows you to 
> monitor the scope screen while you use other function menus. For example, 
> you can monitor the scope screen even while you are changing the IF filter 
> shape and passband width. The scope range can be set in 4 steps ±12.5 kHz, 
> ±25 kHz, ±50 kHz and ±100 kHz, centered onthe receiving frequency. In 
> addition, the spectrum scope has 3 attenuator levels (10dB, 20dB and 
> 30dB).
>
>
>
>
>
>
>
> Eight-channel RTTY TX memory
>
> The IC-756PROIV has 16 channels of RTTY transmit memory. You can edit and 
> send up to a 62 character message for each memory channel without a PC or 
> other external unit*. The transmit memory is displayed on the screen so 
> you won’t send the wrong message. The built-in RTTY demodulator and 
> decoder allow you to check the callsign of the station on the air 
> instantly. A PC or external unit is not also necessary.
>
> * When writing and sending RTTY messages on site, a Terminal Unit, TNC or 
> PC and dedicated software is required.
>
>
>
> Adjustable SSB transmit BW
>
> The SSB transmit bandwidth is selectable from 100, 300 and 500Hz at the 
> high-pass edge, and 2500, 2700 and 2900Hz at the low-pass edge 
> respectively. 3 types of high and low combinations can be stored in the 
> memory. In addition, the built-in audio equalizer has separate bass and 
> treble adjustments for a total of 121 combinations, so you can tone your 
> voice up or down as you want. With this flexible DSP-based waveform 
> shaping, you can tailor your transmit audio quality to suit your operating 
> style.
>
>
>
> Other new features
>
> New 60 meter band coverage, equivalent transmit power and antenna tuner 
> capabilities to the other bands.
>
> (U.S.A. version, USB mode only)
>
> 2 clocks show different time zones at once, such as local and UTC time
>
> Inherited Properties From The 756PROII
>
> 32-bit floating point DSP & 24-bit AD/DA converters
>
> The heart of the IC-756PROIV is the proven combination of the 32-bit 
> floating point DSP and 24-bit AD/DA converters. This powerful combination 
> supports many digital processing features exclusive to the IC-756PROIV, 
> which cannot be achieved with traditional analog processors. The 24- bit 
> AD/DA converter has an ultra-wide dynamic range. The receiver delivers a 
> distortion- free, clear sound in any signal condition, from a weak signal 
> to a strong full power station.
>
>
>
> AGC loop management
>
> The digital IF filter and manual notch filter are included in the AGC loop 
> driven by the DSP. This architecture completely eliminates“AGC pumping” 
> caused by adjacent strong signals out of the IF filter passband. In 
> addition, programmable AGC time constants* (slow, medium, and fast 
> presets) give flexibility and speed needed for working the pile-ups.
>
> * Except FM mode.
>
>
>
>
>
>
>
> Dual watch
>
> The dual watch* function allows you to receive 2 signals on the same band 
> simultaneously. You can listen to your favorite net while keeping an eye 
> or ear on the DX station. The signal strength balance between the main and 
> sub frequencies is adjustable from the balance knob.
>
> * Same band only
>
>
>
> Digital twin PBT
>
> DSP-based twin passband tuning (PBT) helps eliminate interference by 
> changing the IF filter bandwidth and/or shifting the center frequency. 
> With the digital IF filters, the PBT performance allows you to cut away 
> all the interference and noise to hear the actual signal. The LCD 
> indicates the twin PBT conditions across the top of the screen.
>
>
>
> Manual notch function
>
> An incredible 70dB of attenuation is at your command with the manual 
> notch. Eliminate strong adjacent signals or beat tone noise, without 
> reducing the performance of the AGC gain.
>
>
>
> Sharp and soft filter shapes are selectable for SSB Digital mode
>
> Select an appropriate filter shape that favors your operating style or 
> band conditions. Independent SSB and DIGITAL filter gives you the 
> flexibility.
>
>
>
> Sharp and soft filter shapes are selectable for SSB and DIGITAL mode
>
>
>
> Select an appropriate filter shape that favors your operating style or 
> band conditions. Independent SSB and DIGITAL filter gives you the 
> flexibility.
>
>
>
> SSB Sharp Filter
>
> The perfect filter shape factor when signal fidelity or pinpoint accuracy 
> is needed! A sharp slope from the filter edges gives full audio response 
> while eliminating any adjacent interference.
>
>
>
> DIGITAL Sharp Filter
>
> The “too good to be true” DIGITAL filter! The steep filter skirts — only 
> 200Hz from the –6dB to the –60dB points — allow you to hear a weak DIGITAL 
> signal that is surrounded by strong ones. DX hunters will have to try this 
> one to really see the magic of the Sharp DIGITAL filter.
>
> SSB Soft Filter
>
> The perfect filter shape factor when trying to pick out a weak signal! The 
> rounded filter shape resembles a traditional analog filter, by rolling off 
> the high and low ends of the passband. Although maintaining the steep 
> filter skirt characteristics of a digital filter, the soft filter 
> increases the signal-to noise ratio of the intended signal.
>
>
>
> DIGITAL Soft Filter
>
> Running a pile-up has become easier with the soft DIGITAL filter. By 
> broadening the filter skirt, the characteristics of the soft filter 
> perform much like a mechanical filter without the ringing.
>
>
>
>
>
> Automatic notch function
>
> Eliminate annoying AM carriers, amplifier or radio tune up interference 
> with a push of a button. The automatic notch tracks 2 or more interfering 
> signals simultaneously without intended signal loss or distortion. Very 
> helpful on 80 and 160 meters.
>
>
>
> Adjustable noise reduction
>
> The 32-bit DSP processing power produces real results by separating signal 
> components from the noise with the variable Noise Reduction. By 
> suppressing the noise components, an outstanding Signal to- noise ratio is 
> achieved, providing clear, clean audio in all modes without distortion of 
> the target signal.
>
>
>
> Optional CW module allows for unparalleled CW Integration through computer 
> software.  CW operators will no longer need to know CW to operate this 
> legacy mode.
>
>
>
> Adjustable noise blanker
>
> Reduce annoying QRN from pulse-type noise such as engine ignition systems 
> and sparking appliance motors, with the fully adjustable (101 steps) noise 
> blanker.
>
>
>
> Digital voice recorder
>
> The Digital Voice Recorder (DVR) is a very convenient function for 
> contests, DXpeditions and even normal operation. Record your callsign, CQ, 
> or other station information into four memory locations. A total of 90 
> seconds is available for the four memories, with each memory channel being 
> soft partitioned to allow custom recording sizes. A quick push of the 
> front-panel DVR button allows you to record received signal into the R4 
> memory. The playback automatically mutes the receiver for clear playback 
> of the previous 15 seconds of recorded audio. The perfect feature for 
> those contest operators wanting to improve their UBN.
>
>
>
> DIGITAL memory keyer
>
> A must have feature for the DIGITAL operator, the internal memory keyer 
> provides 4 memories for programming station information, calling CQ and 
> callsign. Each memory has a capacity of 55 characters, as well as other 
> time saving functions such as automatic automatic repeat, serial contest 
> number autocounter, and morse cut number functions.
>
>
>
> Digital RF speech compressor
>
> The IC-756PROIV utilizes the 32-bit DSP for the RF speech compressor 
> providing the maximum punch without the fuzzy sound. Great for breaking 
> through the noise and hash to complete the QSO.
>
>
>
>
>
>
>
> Highly stable transmitter
>
> For a big, clear signal, the IC-756PROIV uses two 2SC5125 transistors in 
> the PA Unit. Along with superior IMD characteristics, these transistors 
> have plenty of power to allow for 100W full duty cycle operation. Advanced 
> design considerations along with an aluminum, die-cast frame, and large 
> cooling fan, help to stabilize the PA circuit providing full duty cycle 
> operation.
>
>
>
> High stability crystal unit
>
> The IC-756PROIV incorporates a high-stability master oscillator, providing 
> ±0.5ppm (–10ºC to +50ºC). A must for RTTY, SSTV or M A R S operation.
>
>
>
> Triple band stacking register
>
> Hop around the band with Icom’s exclusive triple band stacking registers. 
> Each band remembers the last 3 frequencies, mode and other settings used.
>
>
>
> SSB data communication
>
> When the IF filter passband is reduced to 500Hz or less in SSB/SSB data 
> mode, special bandpass filters are automatically selected. The BPF 
> automatically sharpen for better rejection of interfering signals. Along 
> with the BPF, the IC-756PROIV automatically turns off the compression and 
> enables the 1/4-tuning step for easier operation and more accurate tuning. 
> Perfect for PSK31, SSTV or other AFSK modes.
>
>
>
> 5-inch TFT color LCD
>
> Enjoy the full 5-inch TFT color display. The IC-756PROIV has 8 colors of 
> display settings and 7 types of font settings. Various information is 
> indicated on the color LCD, separated into an upper and lower screen. The 
> lower screen can spread vertically to increase the information viewing 
> area.
>
>
>
> Other features
>
> [ Antenna and receiver ]
>
>
>
> Built-in highspeed auto antenna tuner
>
> 2 TX/RX antenna connectors and RX antenna connector
>
> 30kHz–60MHz general coverage receiver*
>
> Built-in RX attenuator (6/12/18dB)
>
> Twin peak audio filter for RTTY reception
>
> * Depending on version
>
> [ Transmitter ]
>
>
>
> Tx monitor function
>
> Tone encoder
>
> VOX operation
>
> All mode power control
>
> External Control for Voice Memory and Memory Keyer
>
>
>
> [ Operation ]
>
>
>
> Set mode menu for speedy setting
>
> Analog and digital meter indicates relative output power, SWR, ALC level 
> and compression level
>
> Memory pad stores up to 5 or 10 operating frequencies and modes
>
> Quick split function
>
> RF gain and squelch control
>
> ±9.999kHz Adjustable RIT and ΔTX • 1Hz step tuning and display
>
> 101 memory channels with 10-character channel name
>
> Optional Voice synthesizer announces the operating frequency, mode and 
> signal strength in English
>
> Program, memory, select memory, Δf scans
>
> Auto tuning step function Dial lock
>
> Band edge beep (can be disabled)
>
> AH-4 control circuit
>
> Automatic tuning speed
>
> CI-V interface with optional CT-17 for PC remote control
>
>
> -----Original Message-----
> From: uk-contest-bounces at contesting.com 
> [mailto:uk-contest-bounces at contesting.com] On Behalf Of Clive Whelan
> Sent: 01 April 2009 13:19
> To: UK Contest Reflector
> Subject: [UK-CONTEST] OT-Dxpedition
>
>
> Please excuse the bandwidth to publicise this expedition.
>
> A group of GWs will activate the Llamedos Islands off the coast of
> Pembrokeshire for one day only ( today). The islands consist of two
> rocky outcrops exposed only for a period of ten days following the
> Spring equinox, and have been  named Nalyd and Samoht after famous
> Welsh authors of the past. Unlike Ynys Môn the islands are sufficiently
> distant from the coast of Pembrokeshire to qualify for IOTA status and
> application has been made to the RSGB for their accreditation
>
> The islands are known nesting and breeding grounds for Ospreys and Blue
> Seals, so some disruption may be inevitable.
>
> QSLs may go via the bureau or direct to GW9BF QTHR.
>
> A loaf of lava bread is offered to the first UK station to work the
> expedition on all 17 bands ( 160m to 10Ghz)
>
>
> 73
>
>
> Clive
> GW3NJW
> _______________________________________________
> UK-Contest mailing list
> UK-Contest at contesting.com 
> http://lists.contesting.com/mailman/listinfo/uk-contest
>
>
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