Re: [IRCA] Tecsun PL-606 DSP Receiver Review

[D1028Gary@xxxxxxx]

Hi Walt,
 
Thanks for your comments on the new PL-606 review, and thanks also for your 
 detailed DXing reports from Kauai using the 7.5" loopstick E100 model.
 
In answer to your question, all modified Ultralight radios having a 7.5"  
loopstick are significantly more sensitive on both AM and LW than any stock  
pocket radio, to the extent that DXing results on either band are greatly  
enhanced. A stock PL-606 model would have 1 kHz DSP filtering roughly 
equivalent  to the Murata CFJ455K5 filter installed in your E100, but the  PL-606 
loopstick's AM performance would fall far short of your current  capability.
 
Shortly before his unfortunate accident, John Bryant and I both  
experimented with "Slider E100" models such as yours, and discovered that we  could 
improve received audio on DX stations by off-tuning 1 kHz up or  down from the 
fundamental frequencies of the DX station (whichever way was  farther from 
domestic splatter). This provided clearer high-frequency audio  from DX 
stations for MP3 recordings, without much reduction in the DX  station's signal 
strength.
 
Of course, the new Tecsun 1 kHz DSP Ultralight radios (PL-310  and PL-380) 
have also been popular platforms for 7.5" loopstick  transplants, especially 
the PL-380 model. Several 7.5" loopstick PL-380  models have been sent out 
from here for noted DXers (Mark, Saul  and Rob), and I have an extra model 
here if you'd like to try one out. In  comparison to your "Slider E100," the 
7.5" loopstick PL-380 model  offers equivalent AM-DXing performance without 
the need to slide a coil,  although the difference in received DX audio 
(between the 1 kHz DSP  filtering and the Murata ceramic filter) leads some 
DXers to say that the Murata  filter models (like yours) have a somewhat more 
"mellow" tone.
 
73, Gary  (in Puyallup, WA,  USA)        
 
 
 
 
In a message dated 11/29/2010 10:10:59 A.M. Pacific Standard Time,  
canswl@xxxxxxxxx writes:

Yes,  thanks Gary!  Sitting here on the lanai in Kauai with the highly 
modified  Eton e100 (thanks, Gary!), I couldn't help but think whether the 606 
might be  a better traveller and easier to use than the Eton.  Of course the  
external large ferrite rod does elicit some interest passing through 
security,  and I'm worried about it's fragility (might it shatter easily if the 
bag was  dropped for instance?).  Also with the tight ceramic filter, the 
audio is  rather muddy and not entiirely pleasant to listen to.  Comments?   
.......Walt

On Mon, Nov 29, 2010 at 12:27 PM, Richard Allen <_richarda@xxxxxxxxxxxxx 
(mailto:richarda@xxxxxxxxxxxx) >  wrote:

Thanks Gary.  You once again did an excellent  review.

I've been using a PL-606 for about a fortnight and found it  an excellent 
ultralight receiver. It has excellent sensitivity and  selectivity. Before TP 
propagation went downhill, I was able to hear signals  from Japan on the 
barefoot PL-606.

Richard  Allen
36°22'51"N / 97°26'35"W
(near Perry OK USA)
----- Original Message -----
From: _D1028Gary@xxxxxxxx (mailto:D1028Gary@xxxxxxx) 
To: _am@xxxxxxxxxxxx (mailto:am@xxxxxxxxxxx)   ; _irca@xxxxxxxxxxxxxxxxx 
(mailto:irca@xxxxxxxxxxxxxxxx)  ; _mwcircle@xxxxxxxxxxxxxxxx 
(mailto:mwcircle@xxxxxxxxxxxxxxx) 
Sent:  Sunday, November 28, 2010 9:39 PM

Subject: [IRCA] Tecsun PL-606 DSP Receiver  Review





Hello All,

For those interested in the  latest technological advances in AM-DXing
portables, a full 6-page  review of the newest Ultralight radio sensation 
(the
compact PL-606  AM-FM-SW-LW receiver) has been uploaded to DXer.Ca (at
__http://www.dxer.ca/file-area/cat_view/87-ultra-light-radio-files-area/94-u
ltralight_ 
(http://www.dxer.ca/file-area/cat_view/87-ultra-light-radio-files-area/94-ultralight) 
-radios_
(_http://www.dxer.ca/file-area/cat_view/87-ultra-light-radio-files-area/94-u
ltralight-radios_ 
(http://www.dxer.ca/file-area/cat_view/87-ultra-light-radio-files-area/94-ultralight-radios) )  ,  the first option), to the 
Ultralightdx Yahoo
group  file site, and also to __http://www.mediafire.com/?gcu6zgyxb724cy2__ 
(http://www.mediafire.com/?gcu6zgyxb724cy2_) 
(_http://www.mediafire.com/?gcu6zgyxb724cy2_ 
(http://www.mediafire.com/?gcu6zgyxb724cy2) )  .

Detailing Tecsun's successful effort to combine the  class-leading 100 mm
loopstick (of the PL-310 model) with 1 kHz DSP  selectivity in a very small
cabinet, the article includes many  photos, information on PL-606 quirks and
advantages, and the  results of a four-band competitive performance test
against the  PL-380 and PL-310 models. At $39.95 (plus $20.00 shipping from 
 Hong
Kong), this breakthrough Ultralight model may well be the  best combination
yet  of AM sensitivity, selectivity and  portability.

73 and Good DX,
Gary DeBock (in Puyallup,  WA,  USA)






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