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Improved 1 kHz DSP Audio in CC Skywave SSB Model   
Wednesday, January 03 2018

IRCA
Although a detailed investigation of the new C.Crane Skywave SSB model is still ongoing, during the recent Kona, Hawaii DXpedition one thing became clear pretty quickly-- C.Crane has made a significant improvement in the audio quality of its 1 kHz DSP filtering. This was in addition to the previous CC Skywave model's advantage in 1 kHz DSP audio fidelity relative to the Tecsun PL-310, PL-380 and other Tecsun Si4734 DSP chip models. The improved audio clarity in the SSB model's 1 kHz setting can probably best be appreciated by listening to a few MP3's recorded on the new Skywave SSB model in Hawaii in the 1 kHz DSP setting, along with a few recorded in August (Rockwork 4 DXpedition) on the previous CC Skywave model, and on the Tecsun PL-380 (with both also in their 1 kHz DSP setting).


Kona, Hawaii DXpedition (CC Skywave SSB model)

981-CNR1 0900z 12-18-17 (CNR1 Theme Music) https://dreamcrafts.box.com/s/ajtu6lmchs7e8fjgom3bg6lsbclrc0s6

621-Tuvalu 0750z 12-18-17 (Employment Ads) https://dreamcrafts.box.com/s/8w8ht0f9k2j87dok77ho23msxoidqgy6

846-Kiribati 0735 12-18-17 (Local Island Music) https://dreamcrafts.box.com/s/7sb6luietjmx0fdghwqedi9x5splos1n


Rockwork 4 DXpedition (CC Skywave Previous Model)

558-Fiji One 1323z 8-4-17 (Local Island Music) https://dreamcrafts.box.com/s/ykjkqqfa59l7h2rfcedhudikwn8ayfye

531-More FM 1255 8-1-17 (Advertisements) https://dreamcrafts.box.com/s/lbmcayqyvvivedjx1j1ru5ihdcdydsem

531-6DL 1222 8-4-17 (AFL Soccer Game) https://dreamcrafts.box.com/s/2ms23dtebe7zvl6v0mynhxhjmcqinbs8


Rockwork 4 DXpedition (Tecsun PL-380)

558-Fiji One 1318z 8-8-17 (Local island Music) https://dreamcrafts.box.com/s/6b2fxp2ai8p44t38fih4dn1meffzocxi

558-7BU 1304z 8-9-17 (Classic Rock Music) https://dreamcrafts.box.com/s/8kkdih6ws4wx5fv73usae0f40p2z2pjr

657-Star 1250z 8-2-17 (Christian music) https://dreamcrafts.box.com/s/wj5chv6w11ez7zgcxws077gqo9ofd5pr


The new SSB model's 1 kHz DSP filtering is just as effective as that of the other two models in reducing unwanted splatter, but the improved audio fidelity is a big bonus. Although not quite up to the standard of the Perseus-SDR or other table receivers, it is definitely as good as it gets in pocket radios.


Gary DeBock (in Puyallup, WA, USA)



 


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