Date   

Re: Pl 360 no audio

Rik
 

I waited awhile hoping someone else would have a better answer.- FARMERIK


Re: Pl 360 no audio

Gary DeBock
 

Hello Phil,
 
<<<    I guess I should just write it off. I thought maybe the master Gary may have seen this issue and maybe had a fix.    >>>
 
Sorry for delayed communication, Phil-- investigation, testing and modification of the new CC Skywave have been taking up most of my limited hobby time this week.
 
If both the speaker and headphone jack of your PL-360 have no audio then your audio amplifier IC chip has probably failed, leaving you without any good repair options. You could pay for a repair which would probably cost more than a new PL-360, or attempt to find a junk PL-360 on eBay that might have a good audio amp IC (a very long shot), after which you would need to track down a technician ready, willing and able to do a tricky circuit board swap for you under extremely tight conditions (an even longer shot). Given the low purchasing cost of a new PL-360 your best option would be to bite the bullet and spring for a new one, bearing in mind that the 7.5" plug in loopsticks transform the humble model into a  paragon of DXing sensitivity.
 
73, Gary DeBock (in Puyallup, WA, USA)
     
 
 
 

-----Original Message-----
From: ppasteur@... [ultralightdx]
To: ultralightdx
Sent: Tue, Dec 30, 2014 10:07 am
Subject: [ultralightdx] Re: Pl 360 no audio

 
Thanks Farmerik!
I guess I should just write it off. I thought maybe the master Gary may have seen this issue and maybe had a fix.
If not, you are right, it is time to just bite the bullet and pick up another PL 360. The thing about that is, other then the great antennas that Gary made for me to use with it... I am not a fan of the radio. I particularly do not much like the form factor.

Anyway, thanks again for the response!

Phil


Re: Pl 360 no audio

ppasteur@...
 

Thanks Farmerik!

I guess I should just write it off. I thought maybe the master Gary may have seen this issue and maybe had a fix.

If not, you are right, it is time to just bite the bullet and pick up another PL 360. The thing about that is, other then the great antennas that Gary made for me to use with it... I am not a fan of the radio. I particularly do not much like the form factor.


Anyway, thanks again for the response!


Phil


Re: Question for Radio Jay Allen or anyone else who knows...

microcode@...
 

Hi,

On Tue, Dec 30, 2014 at 06:23:44AM -0800, policow6@... [ultralightdx] wrote:
I read some reports which said the PR-D15 was less sensitive than the
PR-D5 but my sample was just as hot...the difference is that the PR-D15
sometimes had some issues where soft muting reduced the volume of some
signals, but I didn't' find that a deal killer for me...overall I would
prefer the PR-D15 over the PR-D5 because of its 1KHz Tuning steps, slightly
improved FM selectivity and slightly improved audio, plus a nicer handle.


I have more details on the website.
Thanks, I have read all the stuff on the PR-D15 on your site I can find
including the shootout and the PR-D5 & PR-D15 reviews several times. I just
wanted to clarify a few points.

The SRIII has far, far better audio, albeit mono, but yes, quality
control is a big issue with these and AM has a slightly higher noise
floor than the SRI or SRII...better to snag a nice used SRI or SR II on
eBay...they are usually quite reliable as found. FM on the SR's is not
very selective though.
If I was back home in America I would do that. Here it's too expensive and
too risky and I can't get to my tools so I have to do things differently.
Now it's down to whether a 40 buck (Walmart's prices are going up, ok 50
buck) SRIII + shipping could be a killer deal or whether it's safe to just
cough up 80 bucks + shipping for the D15.

Thanks a lot for the info.


Re: Pl 360 no audio

Rik
 

I love my digital  Tecsun radios and I have a lot of them but unfortunately they do have a reletively high failure rate where they do something completely different than what the controls are set for. Some years ago I took my PL-360 with the two Loop Stick antennae Gary made for me to the coast of Maine, and no matter what I did I could not switch  the radio to LW. No problem after I got home though. I bought a second PL-600 and CR-1100 because they shut off or turn them selves on all by them selves. Some times they fix them selves for awhile, and other times the  digital Tecsun just dies never to work again. My newer PL-310ETM only tunes with ETM or from the Memory for awhile now. It will not tune to the next frequency. Since you have the larger ferrite antennae, I'd consiter  getting a couple more PL-360 radios to go with them. - FARMERIK


Re: 1070 kHz and the C.Crane Skywave

Stan Horzepa
 

Thanks! I still hear WTIC's IBOC on 1070, but by positioning the Skywave just so, I nulled out the IBOC and heard WKOK... something no other radio I own can do.

Stan, WA1LOU


On 12/29/14 8:09 PM, farmerik@... [ultralightdx] wrote:

Congradulations! I have been checking 1070 on various radios and antennae, and can't get anything on 1070. I am about 30 miles from WTIC.- FARMERIK


Re: Question for Radio Jay Allen or anyone else who knows...

policow6@...
 

I read some reports which said the PR-D15 was less sensitive than the PR-D5 but my sample was just as hot...the difference is that the PR-D15 sometimes had some issues where soft muting reduced the volume of some signals, but I didn't' find that a deal killer for me...overall I would prefer the PR-D15 over the PR-D5 because of its 1KHz Tuning steps, slightly improved FM selectivity and slightly improved audio, plus a nicer handle.


I have more details on the website.


The SRIII has far, far better audio, albeit mono, but yes, quality control is a big issue with these and AM has a slightly higher noise floor than the SRI or SRII...better to snag a nice used SRI or SR II on eBay...they are usually quite reliable as found. FM on the SR's is not very selective though.


Jay

http://radiojayallen.com


Re: Digitech AR-1733 Vs. CC Skywave-- No Contest

microcode@...
 

Hi Gary,

Do you have a PL-310ET in your arsenal and have you compared it to these
other two models? I have heard that the PL-310 has a wider case than the 380
and a longer ferrite. I don't have a 380 to compare it to and I have not
opened my PL-310 to check the dimensions. So I have no way to check this.

On Tue, Dec 30, 2014 at 04:25:18AM -0500, D1028Gary@... [ultralightdx] wrote:

In summary, anyone who is accustomed to DXing on Medium Wave with a Digitech AR-1733 will discover a new world of fringe signals by purchasing a new CC Skywave (or even the Tecsun PL-380, for that matter).

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


Re: CC Skywave Vs. Tecsun PL-380-- MW Daytime DX Fight to the Finish

microcode@...
 

Hi Gary,

Thank you for taking the time to put those pictures up. The size difference
is striking, much more than I expected. The S/W seems truly tiny. It seems
to me a real plus that it uses less batteries. That means you can go that
much longer than with our big old fashioned PL-310/380s on a trip.

All of the other data will be combined in a CC Skywave full review file,
which I hope to finish up within a few days.
Will look forward to that and produce a PDF for you asap.


Digitech AR-1733 Vs. CC Skywave-- No Contest

Gary DeBock
 

Hello All,
 
Thanks very much to Mike Schuster of NJ for sending a Digitech AR-1733 model here for a comparison with the new C.Crane Skywave model.
 
Although these two models have a very similar physical appearance their Medium Wave DXing capabilities are completely different. The AR-1733 cannot compete with the Skywave in the reception of weak MW signals, even with its narrow DSP setting (it only has two DSP filtering options). In a brief daytime DX scan the Skywave completely smoked the AR-1733, receiving about 20 fringe stations that were completely absent on the AR-1733. Whereas the Tecsun PL-380 can stay fairly close to the Skywave in Medium Wave DXing the AR-1733 throws in the towel immediately.
 
A quick disassembly of the "DSP" model shows a blank space where the Skywave's Si4736 chip is located, with the cut-rate DSP chip apparently located under the digital board shield. The relatively poor filtering and MW sensitivity make me seriously doubt that it is a SiLabs product, but probably something similar to the cheap "DSP" chips manufactured in China for models like the Kchibo KK-D6110. As reported previously, my hunch is that C.Crane used this Chinese-design AR-1733 (made by Redsun) as a starting point for their custom Skywave model project, completely upgrading both the RF and Digital boards with extensive improvements as a platform for the new SiLabs' Si4736 DSP chip. Both the RF and Digital boards in the Skywave have the C.Crane name and Revision number, indicating that the model is a custom project by C.Crane taking advantage of the lower manufacturing costs in China (and not simply a rebranded Redsun product, like so many of C.Crane's models). The relatively high cost of the Skywave is probably related to the company's need to recover some the R&D expense of this custom project, which is a far riskier proposition than simply rebranding an existing Redsun pocket radio.
 
In summary, anyone who is accustomed to DXing on Medium Wave with a Digitech AR-1733 will discover a new world of fringe signals by purchasing a new CC Skywave (or even the Tecsun PL-380, for that matter).
 
73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)
 
 
    


Re: 1070 kHz and the C.Crane Skywave

Rik
 

Congradulations! I have been checking 1070 on various radios and antennae, and can't get anything on 1070. I am about 30 miles from WTIC.- FARMERIK


Pl 360 no audio

ppasteur@...
 

Hey folks, I tried this before but it was under someone else's topic. Not sure if it was flat missed, or if no one has any info about it. I thought I would give it one more try before I gave up. 


I have been meaning for sometime to consult the collective wisdom of the group on an issue that I have with my PL-360. I remember reading that several members of the group got this radio. I am hoping that maybe someone had the below problem and figured out how to fix it!


I have had the PL-360 for what seems like a couple of years now. Gary helped me out by making up both a MW and LW 7.5" Amidon antennas for the radio. I don't listen to it that often due to lack of time, but have had many hours of enjoyment using both of the antennas over the years that I have had it.


Until just recently that is. One day a few weeks ago I tried to use the radio, but,  I now have no audio out of the thing. Neither through the speaker nor  any of several sets of headphones through the earphone jack. It is clearly tuning. It gets many stations and the signal strength and noise meters work fine. In fact everything seems to be working just fine... except one. No audio!


I have made sure that I have fully charged batteries in it...and used good quality alkaline batteries. I have cleaned the jack using deoxit (used  a headphone mini plug and worked around the jack many times).

Still no audio. I have let it sit with no batteries in it for days and retried.. to no good effect!


Is there a master reset somewhere that I could try resetting the microprocessor with?


Does anyone have any suggestions for additional troubleshooting or repair steps. OR, is it just time to get a new one?


Thanks for any and all advice or suggestions!!,

Phil 


1070 kHz and the C.Crane Skywave

Stan Horzepa
 

Late this afternoon (2250 UTC), I logged a second station on the previously dead-to-me* 1070 kHz courtesy of the new C.Crane Skywave receiver (again barefoot using its internal antenna). The new logging was WKOK in Sunbury, PA.

* dead-to-me due to 50,000 watts of WTIC on 1080 kHz 12 miles away

Stan Horzepa, WA1LOU
Downtown Wolcott, CT


Re: Pictures of AR1733

R. Mark Barnett
 

That goes far beyond the usual tweaks in a custom radio. I'm excited to see one that the mods are more than paint deep! I wonder if we will see a Redsun variant??
 
Mark B. N8PGV 
 


Re: Pictures of AR1733

Michael <michael.setaazul@...>
 

Very interesting to compare the jpgs of both!
It does indeed look as though the AR 1377 begat the Skywave.

Great, but why-oh-why do they not include the
simplest and cheapest mod which will greatly
improve AM reception - ie make the ferrite
as long as the case width allows ???

The telescopic aerial could be mounted so as
to maximise this..

Michael

----- Original Message ----- From: D1028Gary
. . .
My guess is that C.Crane took the AR1733 model as a starting point
(since it was made by China's Redsun Company, with whom C.Crane
had a long-term relationship) and redesigned the AR1733's RF and
Digital boards to create a custom "Skywave" radio incorporating
the new Si4736 DSP chip. . . .


Re: Pictures of AR1733

Gary DeBock
 

Hi Marc,
 
Thanks for posting the photos of the AR1733's internal circuit boards (RF and Digital boards).
 
But if you look at the photo of the front of the CC Skywave's RF board (posted at
and the back of the Skywave's Digital board (posted at
you will notice quite a few minor differences from the circuitry in the AR1733 photos that you posted.
 
My guess is that C.Crane took the AR1733 model as a starting point (since it was made by China's Redsun Company, with whom C.Crane had a long-term relationship) and redesigned the AR1733's RF and Digital boards to create a custom "Skywave" radio incorporating the new Si4736 DSP chip. Although the "Skywave" model is also made in China (presumably by Redsun), it has the C.Crane name and Revision number stamped on the circuit boards, making it seem likely that it is a custom C.Crane project taking advantage of China's lower manufacturing costs. The high retail cost of the "Skywave" is probably related to the fact that C.Crane needed to invest some significant $$ in designing and creating this custom portable, which is a far riskier project than simply rebranding existing Redsun models with its C.Crane name (as it did with the RP-300/ C.Crane SWP model, and many other portables).
 
73, Gary DeBock (in Puyallup, WA, USA)
 
 
 
 
 

-----Original Message-----
From: sintsixtus@... [ultralightdx]
To: ultralightdx
Sent: Mon, Dec 29, 2014 1:04 pm
Subject: [ultralightdx] Re: Pictures of AR1733

 
Better now,

Look how they resemble the ... CCrane radio!

http://dxradio.dommel.be/research/jaycar2.jpg
http://dxradio.dommel.be/research/jaycar1.jpg

I would love to hear Dr Gary's reaction!

Marc


Re: CC Skywave Vs. Tecsun PL-380-- MW Daytime DX Fight to the Finish

Gary DeBock
 

Hello Microcode,
 
<<<    As usual yahoo strips the attachments so we didn't get to see your pic of
the sizes of the two radios. Would it be possible for you to host it on your
mediafire along with the other info? If so I would be interested in seeing
it     >>>
 
Sure, I'm glad to do this for anyone who can't view the attachments. The relative size photo of the stock PL-380 and CC Skywave models is posted at
and a high detail photo of the new CC Skywave (front panel) is posted at
 
All of the other data will be combined in a CC Skywave full review file, which I hope to finish up within a few days.
 
73, Gary
 
 

-----Original Message-----
From: microcode@... [ultralightdx]
To: ultralightdx
Sent: Mon, Dec 29, 2014 2:16 am
Subject: Re: [ultralightdx] CC Skywave Vs. Tecsun PL-380-- MW Daytime DX Fight to the Finish

 
Gary,

I am looking forward to listening to your MP3s. Thanks for doing such a
complete test and sharing your results.

As usual yahoo strips the attachments so we didn't get to see your pic of
the sizes of the two radios. Would it be possible for you to host it on your
mediafire along with the other info? If so I would be interested in seeing
it.

Thank you.

On Sun, Dec 28, 2014 at 11:57:24PM -0500, D1028Gary@... [ultralightdx] wrote:
>
> Hello All,
>
> With clear weather and lots of open space in our back yard, it was time for a full Shootout between the Si4734-chip-powered Tecsun PL-380 and the new Si4736-chip-powered C.Crane Skywave portable. Both stock models were checked out for normal operation before the contest, with new batteries and an equal chance to receive six fringe MW stations just after local noon.
>
> The new Skywave is significantly smaller than the Tecsun PL-380 (see attached photo), and at $89.95 (before shipping) costs about twice as much. The Tecsun PL-380 stock model was chosen for this Shootout because it has become the favorite of Ultralight radio Transoceanic DXers, with a generous range of functions combined with "toned down" soft mute. Its stock loopstick places it near the top of the ULR class in sensitivity, and with DSP filtering doiwn to the 1 kHz level it provides fairly representative performance of all the Tecsun Si4734 DSP chip Ultralights.
>
> Rather than tell you immediately how the Shootout went, I will let you form your own opinion by posting six MP3's of the relative reception by the PL-380 Vs. the Skywave in receiving the daytime DX fringe stations. In each MP3 both the PL-380 and the Skywave were set on the 1 KHz DSP setting, and both were pointed in the same direction. In each MP3 the PL-380 receives the fringe station for the first 20 seconds, and the Skywave receives the same fringe station for the final 20 seconds.
>
> 550 KARI Blaine, WA (5 kW at 127 miles)
> http://www.mediafire.com/listen/dd8dok6ujeh50cz/550-KARI-PL380vsSkywave.MP3
>
> 690 CBU Vancouver, BC (50 kW at 148 miles)
> http://www.mediafire.com/listen/hj3khn0zjep3pxc/690-CBU-PL380vsSkywave.MP3
>
> 750 KXTG Portland, OR (50 kW at 117 miles)
> http://www.mediafire.com/listen/06uc2a15yas4y57/750-KXTG-PL380vsSkywave.MP3
>
> 1070 CFAX Victoria, BC (10 kW at 100 miles)
> http://www.mediafire.com/listen/44vpx852aa7pwn4/1070-CFAX-PL380vsSkywave.MP3
>
> 1420 KITI/ KUJ Centralia and Walla Walla, WA (5 kW at 46 miles and 202 miles)
> http://www.mediafire.com/listen/b2apvjdi5uwhksw/1420-KITI-KUJ-PL380vsSkywave.MP3
>
> 1470 KELA Centralia, WA (5 kW at 46 miles)
> http://www.mediafire.com/listen/glppgdt26jzcnlc/1470-KELA-PL380vsSkywave.MP3
>
> Comments: The Si4734 DSP chip in all of the Tecsun Ultralights tends to clip off the higher audio frequencies in the 1 kHz DSP setting, leaving the audio with somewhat of a "muddy" sound. Obviously, the Si4736 chip in the Skywave not only solves this issue, but solves the heterodyne issue (audible in the 1420 kHz MP3) as well. As for why the Skywave seems to have a slight sensitivity edge over the PL-380 (except on 550, where it smokes the PL-380), it could either be the result of a superior loopstick, or superior sensitivity of the Si4736 chip. Further testing should reveal the cause.
>
> Verdict: The Si4736 DSP chip in the Skywave is a major improvement over the Si4734 chip in the Tecsun DSP Ultralights. Although there may be some jokes about the Skywave's cost being "sky high," the radio seems to be everything claimed by C.Crane, at least in its MW performance. This model should see a lot of action among Transoceanic MW DXers, where its superior audio and heterodyne-free reception should make a significant difference in split-frequency results.
>
> 73 and Good DX,
> Gary DeBock (in Puyallup, WA, USA)

--


Re: Pictures of AR1733

Marc Coevoet
 

Better now,

Look how they resemble the ... CCrane radio!

http://dxradio.dommel.be/research/jaycar2.jpg
http://dxradio.dommel.be/research/jaycar1.jpg

I would love to hear Dr Gary's reaction!

Marc


Re: CC Skywave Vs. Tecsun PL-380-- MW Daytime DX Fight to the Finish

Adrian Flynn <ADRIANJAMESFLYNN@...>
 

You mean FUBAR Yahoo SNAFU?

Adrian KF7DYU

On Mon, Dec 29, 2014 at 2:16 PM, microcode@... [ultralightdx] <ultralightdx@...> wrote:
 

On Mon, Dec 29, 2014 at 10:54:20AM -0800, theod438@... [ultralightdx] wrote:
> Huh? All of Gary's attached pix in recent messages have appeared for me, accessing the group on-line.. so mebbe it's a problem at your end?

The emails for the group don't contain any attachments. So mebbe it's a
problem with yagoo hoops ;-)



Re: CC Skywave Vs. Tecsun PL-380-- MW Daytime DX Fight to the Finish

Rik
 

I would be curious how the Traverer III and Skywave compare on AM for ordinary long range listening as stock radios. -FARMERIK

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