Kenwood have just introduced their new HF Transceiver, the TS870 which
replaces the TS850s and TS850sat.
By far the greatest change is that the new radio has a fully digital signal
path. All filtering, both in terms of width and noise reduction, is acheived
digitally, so there are no optional analogue filters!
Also built in as standard are a K1 logikeyer for the dedicated cw operator,
an auto atu which covers both tx and rx, plus an RS-232 adaptor internally.
Kenwood may also be able to supply a windows based control program in the
near future.
TS 870S SPECIFICATION.
By applying the best of it's DSP technology, Kenwood has succeeded in
developing the TS870S, a new gerneration of HF SSB transceiver that offers
superior digital interference reduction as well as receiver performance of
a quality hitherto impossible using the conventional analogue circuitry.
New HF transceivers based on this design concept are collectively called
the "Intelligent Enhanced Communications System". (AA1)
MAIN FEATURES:
HF DSP for post-IF signal processing:
Digital RX Filters: The TS870s features post-IF digital filters for ALL
modes - SSB,CW, AM, FSK and FM, a World first!! offering precise
performance that is unobtainable with analogue circuits.
Bandwidth of the digital filters can be optimised in various working
conditions. You are now also free from struggling to put in the optional IF
filters, thanks to the new razor sharp digital filters.
SSB MODE:
Hi Cut: 1.4 - 6.00khz (12 steps)
Low cut: 0 - 1000hz (10 steps)
CW MODE:
VBT: 50 - 1000hz (6 steps)
SHIFT: 400 - 1000hz (13 steps)
FM MODE:
VBT: 5 - 14khz (6 steps)
AM MODE:
Hi Cut: 2.5 - 7khz (6 steps)
Low Cut: 0 - 500hz (4 steps)
FSK MODE:
VBT: 250 - 1500hz (4 steps)
NOISE REDUCTION:
The TS870S is capable of picking out a target signal that is buried in the
noise. To accomplish this, it employs the line enhancer method for ssb mode
and the SPAC method for cw mode.
BEAT CANCEL:
This cancels out the sort of multiple beat interference that can effect
reception automatically, which is impossible for analogue circuits.
IF AUTO NOTCH:
This is a filter which, when beat interference is experienced, attenuates
only the interfering signal. Should the frequency change, the filter
adjusts automatically.
Thanks to the post-IF DSP, it offers more precise performance than
previously possible.
SELECTABLE TX AUDIO QUALITY & Characteristics:
3 types of adjustments are possible:
TX ADJUSTMENT:
In SSB and AM Modes, the bandwidth of the bandpass filter can be
controlled.
BAND DIVISION SPEECH PROCESSOR:
The speech processor can be adjusted seperately for low, medium and high
ranges.
TX EQUALISERS:
Equipped with 3 equalisers, high boost, bass boost and comb filter, the
TS870S allows the user to select the desired sound quality.
DSP SIGNAL DETECTION:
Thanks to DSP Technology, the quality of signal detection is better than
possible with conventional transceivers, in terms of both low distortion
and high sound quality.
ATU that works on both RX and TX!!!!
Special CW features:
4 Channel Memory in built.....based on the K1 Logikey*tm:
2 Key Connectors!
CW Pitch control between 400 & 1000hz in 50hz steps!
NEW DRU-3 DIGITAL RECORDING UNIT:
By adding the DRU-3 unit, up to 60 seconds of continuous digital recording
is possible!
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