Date   

Re: Kchibo KK-D6110 AM-FM-SW DSP Receiver- First Impressions

Gary DeBock
 

Hi Richard,
 
My initial comparisons with the PL-310 and PL-380 models indicated that the KK-D6110's soft mute threshold is similar to that of the PL-380, so that weak AM signals do not cut in and out as frequently as in the PL-310 (or PL-300WT/ G8). Tuning 1 kHz up or down from a weak station also does not seem to result in a drastic reduction in signal strength, as it does in the "full-blown soft mute" models. 
 
Unfortunately the KK-D6110's AM sensitivity (as provided by the stock loopstick) does not keep up with either the PL-310 or PL-380 models, making an external antenna seem almost a necessity for serious DXing. The Kchibo's effective 1 kHz DSP selectivity and (apparently) reduced soft mute would be very attractive for transoceanic DXers with tuned passive loops, mega-loopsticks, Beverages and other serious DX antennas.
 
73, Gary    
 

In a message dated 7/1/2010 7:18:26 P.M. Pacific Daylight Time, lrdheat@... writes:


Hi Gary,
 
Attactive little set...is the soft mute off, reduced, or blatant?
 
Heatwave

--- On Thu, 7/1/10, D1028Gary@... wrote:

From: D1028Gary@...
Subject: [ultralightdx] Kchibo KK-D6110 AM-FM-SW DSP Receiver- First Impressions
To: ultralightdx@...
Date: Thursday, July 1, 2010, 6:26 PM

Hello All,
 
Although John Washburn (VT) and Jim Zozzaro (MA) have also ordered the Kchibo KK-D6110 model, apparently my radio was the first to arrive from the Far East, so I hope they won't mind if I give my initial impressions on the list.
 
The KK-D6110 model represents a serious effort by Kchibo to get back in the Ultralight DSP receiver market, after having seen their D96L model seriously outclassed by the Tecsun PL-310 and PL-380 radios. The KK-D6110 can essentially be described as a D96L with all the quirky issues corrected, although with AM sensitivity somewhat reduced from that provided by the D96L. It retains Kchibo's Chinese domestic market identity (with Chinese label controls and a Chinese owner's manual), and with length and height slightly exceeding that of the PL-310, seems right on the borderline of the current Ultralight radio standards based on size and weight (I'll defer to the Definitions Committee on that decision).
 
Despite earlier impressions, the KK-D6100 is indeed an Si4734 DSP chip model, and features the full range of DSP filtering options (1, 2, 3, 4 and 6 kHz). The digital "chuffing noise" and RF hash of the D92L and D96L models have been corrected in the KK-D6110, and Kchibo has ditched the rechargeable batteries in favor of standard AA types (three total). The beveled cabinets of the D92L and D96L have been replaced with a rectangular cabinet in the KK-D6110, making the model appear like a Tecsun PL-310 with a Kchibo label.
 
A quick check of the KK-D6110's AM-band performance was made against the D96L and PL-310, and provided an interesting glimpse into where this model may eventually fit in the Ultralight niche market (assuming that it is approved by the Definitions Committee). Kchibo has retained the relatively pleasant audio of the D96L model, as well as the bright green digital display whenever a control is changed (which stays on for 4 seconds, and causes no digital "chuffing noise" like in the D96L). For those who have complained about the quirky dual tuning rate of the PL-310 and PL-380 based on tuning knob rotation, the KK-D6110 comes to the rescue with a selectable 1 or 9/10 kHz tuning rate, making DXing very predictable. The new Kchibo model has numerous digital tuning functions, although it will take a Chinese expert to completely figure them out from the manual (my own Chinese reading ability is basic, although probably better than that of most ULR DXers :-)
 
The KK-D6110 model tested today has AM sensitivity somewhat weaker than that of either the D96L or PL-310 models, and this disadvantage extends throughout the AM frequency range from 530 to 1700 kHz. Further testing against other ULR models should give an accurate picture of where this model stacks up in the highly competitive genre, although the mediocrity of a stock loopstick in the KK-D6110 would not be a deal-breaker for transoceanic DXers with effective external antennas, especially considering the effective 1 kHz DSP selectivity and other superb features. The Tecsun PL-380 also has a stock loopstick that is quite underwhelming, but it has managed to become quite popular among 9-kHz split DXing fanatics because of its effective 1 kHz DSP filtering. Like the PL-380, the KK-D6110 also has a flat, rectangular top cabinet surface ideal for attaching 7.5" loopstick frames, and other such fanatical antenna attachments-- but that's another story :-) Suffice it to say that the KK-D6110 would provide extremely stiff competition for the PL-380 among transoceanic DXers with effective external antennas, assuming that the Definitions Committee gives its nod, and that the DXers could tolerate the Chinese labels on the radio. The Kchibo KK-D6110 is offered by the eBay seller "hygt369" for $51.99 with free shipping (which takes about 2 weeks, from Singapore), a significant bargain in comparison to the Tecsun PL-310 and PL-380 models. The radio will be fully featured in the upcoming 2010 Ultralight AM Shootout, along with the PL-310, PL-380, PL-360 and a couple of analog models.
 
73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)
 
                  


Re: super super sized antenna

sarmento2k
 

Hi Richard

I have used 36 ferrite rods material type 61, dimensions: diameter 0,40 length 9 inches. I have put together two bundles of 18 ferrite rods to achive better diameter / lenght rate.

The total weigh is about 8 kg / 17,6 lbs.

Well, it's not so easy to rotate but I'm using a rotatory dish that I've stolen from the kitchen used initially to serve food.

All in name of dxing.

Regards

Sarmento Campos
Rio de Janeiro - Brazil
http://www.sarmento.net.br
http://www.sarmento.blog.br

--- In ultralightdx@..., "RichardA" <richarda@...> wrote:

Thank for the linking the interesting article to our group.

I don't see it mentioned, but do you know how many kilograms the super antenna weigh?

Good DX.

Richard.

Richard Allen
36°22'51"N / 97°26'35"W
(near Perry OK USA)

--- In ultralightdx@..., "mmaghakian" <mmaghakian@> wrote:

this is an interesting antenna construction article I came across for MW reception

http://www.sarmento.eng.br/Loop_Ferrite_Rod_Antenna.htm


My 7.5 inch antenna from gary

neilbellgroups <neil.bell@...>
 

Thanks Gary! My antenna arrived, packed VERY well. Looking forward to nighttime to try it out.

Neil Bell
KJ6FBA


Kchibo KK-D6110 AM-FM-SW DSP Receiver- First Impressions

Gary DeBock
 

Hello All,
 
Although John Washburn (VT) and Jim Zozzaro (MA) have also ordered the Kchibo KK-D6110 model, apparently my radio was the first to arrive from the Far East, so I hope they won't mind if I give my initial impressions on the list.
 
The KK-D6110 model represents a serious effort by Kchibo to get back in the Ultralight DSP receiver market, after having seen their D96L model seriously outclassed by the Tecsun PL-310 and PL-380 radios. The KK-D6110 can essentially be described as a D96L with all the quirky issues corrected, although with AM sensitivity somewhat reduced from that provided by the D96L. It retains Kchibo's Chinese domestic market identity (with Chinese label controls and a Chinese owner's manual), and with length and height slightly exceeding that of the PL-310, seems right on the borderline of the current Ultralight radio standards based on size and weight (I'll defer to the Definitions Committee on that decision).
 
Despite earlier impressions, the KK-D6100 is indeed an Si4734 DSP chip model, and features the full range of DSP filtering options (1, 2, 3, 4 and 6 kHz). The digital "chuffing noise" and RF hash of the D92L and D96L models have been corrected in the KK-D6110, and Kchibo has ditched the rechargeable batteries in favor of standard AA types (three total). The beveled cabinets of the D92L and D96L have been replaced with a rectangular cabinet in the KK-D6110, making the model appear like a Tecsun PL-310 with a Kchibo label.
 
A quick check of the KK-D6110's AM-band performance was made against the D96L and PL-310, and provided an interesting glimpse into where this model may eventually fit in the Ultralight niche market (assuming that it is approved by the Definitions Committee). Kchibo has retained the relatively pleasant audio of the D96L model, as well as the bright green digital display whenever a control is changed (which stays on for 4 seconds, and causes no digital "chuffing noise" like in the D96L). For those who have complained about the quirky dual tuning rate of the PL-310 and PL-380 based on tuning knob rotation, the KK-D6110 comes to the rescue with a selectable 1 or 9/10 kHz tuning rate, making DXing very predictable. The new Kchibo model has numerous digital tuning functions, although it will take a Chinese expert to completely figure them out from the manual (my own Chinese reading ability is basic, although probably better than that of most ULR DXers :-)
 
The KK-D6110 model tested today has AM sensitivity somewhat weaker than that of either the D96L or PL-310 models, and this disadvantage extends throughout the AM frequency range from 530 to 1700 kHz. Further testing against other ULR models should give an accurate picture of where this model stacks up in the highly competitive genre, although the mediocrity of a stock loopstick in the KK-D6110 would not be a deal-breaker for transoceanic DXers with effective external antennas, especially considering the effective 1 kHz DSP selectivity and other superb features. The Tecsun PL-380 also has a stock loopstick that is quite underwhelming, but it has managed to become quite popular among 9-kHz split DXing fanatics because of its effective 1 kHz DSP filtering. Like the PL-380, the KK-D6110 also has a flat, rectangular top cabinet surface ideal for attaching 7.5" loopstick frames, and other such fanatical antenna attachments-- but that's another story :-) Suffice it to say that the KK-D6110 would provide extremely stiff competition for the PL-380 among transoceanic DXers with effective external antennas, assuming that the Definitions Committee gives its nod, and that the DXers could tolerate the Chinese labels on the radio. The Kchibo KK-D6110 is offered by the eBay seller "hygt369" for $51.99 with free shipping (which takes about 2 weeks, from Singapore), a significant bargain in comparison to the Tecsun PL-310 and PL-380 models. The radio will be fully featured in the upcoming 2010 Ultralight AM Shootout, along with the PL-310, PL-380, PL-360 and a couple of analog models.
 
73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)
 
                  


Re: Will BlackBerry charger work on PL-380?

Gary Kinsman
 

Hi Gil,

Thanks for the info.

Yes, my BB charger has the trapezoidal shaped plug.

Regards,
Gary

--- In ultralightdx@..., "nn4cw" <gilstacy@...> wrote:


I use a BB charger on mine and it works fine. The old Motorola Razr charger works as well. However, make sure the charger plug that fits in the rx is the trapezoidal shape and not the flattened version (micro?) that is used on some cellphones from both BB and Motorola. 73 Gil


MI LOG - FM

wa8lcz
 

30JUN2010 WEN SFI=74-10-4 AM:DX CONDX GOOD, PM:DX CONDX BAD

102.3 WGRT PORT HURON MI ST CLAIR COUNTY 0755EDT 3K 41 MI (MI38)
101.5 WWBN TUSCOLA MI N OF FLINT,BANANA ROCKS 0817EDT 1.8K 67MI (MI39)
090.3 WBLV GRAND RAPIDS MI,BLUE LAKE NPR, 0904EDT 100K 140 MI (MI40)


TOTALS: 73, MI 40,OH 11,NC 1,PA 1,ONTARIO 20
RCVRS: SONY MHC-C33
ANTS: 60 inch loop cut for 93 mhz

Byron WA8LCZ nr Detroit


Re: Will BlackBerry charger work on PL-380?

Antonios Kekalos <akekalos@...>
 

I also use an old Razr charger on my Insignia NS-HD01, works fine.

Tony in Traverse City


On Thu, Jul 1, 2010 at 6:50 AM, nn4cw <gilstacy@...> wrote:
 


I use a BB charger on mine and it works fine. The old Motorola Razr charger works as well. However, make sure the charger plug that fits in the rx is the trapezoidal shape and not the flattened version (micro?) that is used on some cellphones from both BB and Motorola. 73 Gil




--
Tony, N4RNI
Traverse City, MI
EN74dq
FISTS #14949, SWLR-RN072

I'm apathetic, but I don't care



Re: Will BlackBerry charger work on PL-380?

Gil Stacy
 

I use a BB charger on mine and it works fine. The old Motorola Razr charger works as well. However, make sure the charger plug that fits in the rx is the trapezoidal shape and not the flattened version (micro?) that is used on some cellphones from both BB and Motorola. 73 Gil


Will BlackBerry charger work on PL-380?

Gary Kinsman
 

Hello all,

This has probably been answered before, but can a 5 V, 0.75 A BlackBerry charger with a mini-USB connector be used to charge the PL-380?

Thanks,
Gary


Re: super super sized antenna

bbwrwy
 

Thank for the linking the interesting article to our group.

I don't see it mentioned, but do you know how many kilograms the super antenna weigh?

Good DX.

Richard.

Richard Allen
36°22'51"N / 97°26'35"W
(near Perry OK USA)

--- In ultralightdx@..., "mmaghakian" <mmaghakian@...> wrote:

this is an interesting antenna construction article I came across for MW reception

http://www.sarmento.eng.br/Loop_Ferrite_Rod_Antenna.htm


Re: Nice review of the PL-380 by Radio-Timetraveller

gratiscomputer <gratiscomputer@...>
 

sdwillingham schreef:
The effect of a wire attached to the whip, as reported by Radio-Timetraveler, is likely a parasitic sort of counterpoise operation. This comes about because the internal ferrite antenna is unbalanced. My suspicion is that such a wire might add signal strength, but could degrade actual signal-to-noise as it is likely to pick up a lot of local manmade RF noise and even noise from the receiver itself.

I have added a wire to outside. The SW gives 15dB-20dB less signal when NO ferrite is connected.

I do not know how to slove this, as I sometimes listen without on hands ferrite loop .

Marc


--
What's on Shortwave guide: choose an hour, go!
http://shortwave.tk
700+ Radio Stations on SW http://swstations.tk
300+ languages on SW http://radiolanguages.tk


Re: New DSP receiver announced by Elektor

Rick Robinson <w4dst@...>
 

On 6/29/2010 7:29 PM, mmaghakian wrote:
$240 for a board with no case or other required cosmetic parts seems kind of high.

It sure is considering you can buy a Grundig G8 from Radio Shack for $49 or $39 if you have a $10 off coupon like I had. I use my G8 as an experimental breadboard, and also have a working portable radio in the deal. I can find a lot of ways to spend the $200 I saved.

Rick W4DST


Re: New DSP receiver announced by Elektor

koalabang koala <koalabang@...>
 

Hello , I can sell a used board with SI4735 chispet and USB support only ship to Europe.
If you are interested send me an email directly.
Ced

2010/6/30 mmaghakian <mmaghakian@...>

 

$240 for a board with no case or other required cosmetic parts seems kind of high.



--- In ultralightdx@..., "Wolfgang H" wrote:
>
> Hello,
>
> in the Juli/August Elektor there is the first part of a DSP-receiver pbulished with the Silicon Labs IC SI4735. In the classical ultralights from China are based on the SI4734 chip.
>
> The second part of the article will be published in the September issue of the magazin.
>
> The receiver is able to work as standalone receiver. Second possiblity is to go by USB.
>
> And it should be able to be programmed by an experienced user.
>
> A usefull feature ist the ability to use external special antennas as ferrit rod or sw-special antenna.
>
> The fully tested receiver will be delivered in few weeks.
>
> Have a look on the Elektor website.
>
> Wolfgang Hartmann, Nürnberg
>




--
www.dxfm.fr
Equipement: Sony XDR S3HD, ST-SB920


super super sized antenna

MikeM
 

this is an interesting antenna construction article I came across for MW reception

http://www.sarmento.eng.br/Loop_Ferrite_Rod_Antenna.htm


Re: New DSP receiver announced by Elektor

MikeM
 

$240 for a board with no case or other required cosmetic parts seems kind of high.

--- In ultralightdx@..., "Wolfgang H" <dadalbinder@...> wrote:

Hello,

in the Juli/August Elektor there is the first part of a DSP-receiver pbulished with the Silicon Labs IC SI4735. In the classical ultralights from China are based on the SI4734 chip.

The second part of the article will be published in the September issue of the magazin.

The receiver is able to work as standalone receiver. Second possiblity is to go by USB.

And it should be able to be programmed by an experienced user.

A usefull feature ist the ability to use external special antennas as ferrit rod or sw-special antenna.

The fully tested receiver will be delivered in few weeks.

Have a look on the Elektor website.

Wolfgang Hartmann, Nürnberg


Re: Nice review of the PL-380 by Radio-Timetraveller

bbwrwy
 

I've attached a long wire aerial to the whip on my PL-380. It has no benefit to medium or long wave reception. Actually it deteriorated the signal as suggested in Scott's post.

A solution for connecting an external antenna is in John Bryant's article on adding antenna inputs to the Tecsun receivers (in the Files section). It does required some careful surgery.

For those interested in FM DXing with a barefoot ULR, the PL-380 is ideal.

Good DX all.

Richard

Richard Allen
36°22'51"N / 97°26'35"W
(near Perry OK USA)


MI LOG - FM

wa8lcz
 

27JUN2010 SUN THUNDERSTORMS & TORNADOES AT 1500EDT
089.5 WCMU NPR MT PLEASANT MI CENTRAL MI U. 0702EDT 100KW 118 MI (MI33)
093.5 WHMI HOWELL MI LIVINGSTON COUNTYS OWN 0752EDT 5.2K 50 MI (MI34)
107.9 WCRZ FLINT MI FLINTS BEST MIX 0949EDT 50KW 51 MI (MI35)

28JUN2010 MON DX CONDX POOR
88.3 WSHJ SOUTHFIELD MI HIGH SCHOOL 0805EDT 105W 16 MI (MI36)
89.5 WAHS AUBURN HTS MI AVONDALE SCHOOLS 0905EDT 100W 18 MI (MI37)



TOTALS: 70, MI 37,OH 11,NC 1,PA 1,ONTARIO 20
RCVRS: SONY MHC-C33
ANTS: 60 inch LOOP
Byron WA8LCZ nr Detroit


Re: Nice review of the PL-380 by Radio-Timetraveller

Rik
 

Thanks Scott for both answers.- FARMERIK

--- In ultralightdx@..., "sdwillingham" <sdwillingham@...> wrote:



The whip in a PL-3X0 goes to a preamp and filter circuit for shortwave operation. There is a diode switch used to connect the output of the preamp circuit to the AM tank. In MW operation, the whip is not connected to the AM tank.

The effect of a wire attached to the whip, as reported by Radio-Timetraveler, is likely a parasitic sort of counterpoise operation. This comes about because the internal ferrite antenna is unbalanced. My suspicion is that such a wire might add signal strength, but could degrade actual signal-to-noise as it is likely to pick up a lot of local manmade RF noise and even noise from the receiver itself.

-Scott-

--- In ultralightdx@..., "farmerik" <farmerik@> wrote:

Do others here agree the PL-380 and the WRX 911 both connect the AM tank circuit to the whip antenna? I don't have either here, but I do have a PL 310. If this is true, than an external antenna could be attached to the whip for AM? That is how I read the article, but I am not sure. Anyone want to comment? - FARMERIK

--- In ultralightdx@..., "gkinsman1" <gkinsman@> wrote:

Hello all,

Bill (Radio-Timetraveller) has posted an extensive review of the PL-380 on his blog.

http://radio-timetraveller.blogspot.com/

Based on his review, and the earlier review by Gary De Bock, I decided to finally buy one.

Regards,
Gary


Re: Nice review of the PL-380 by Radio-Timetraveller

sdwillingham
 

The whip in a PL-3X0 goes to a preamp and filter circuit for shortwave operation. There is a diode switch used to connect the output of the preamp circuit to the AM tank. In MW operation, the whip is not connected to the AM tank.

The effect of a wire attached to the whip, as reported by Radio-Timetraveler, is likely a parasitic sort of counterpoise operation. This comes about because the internal ferrite antenna is unbalanced. My suspicion is that such a wire might add signal strength, but could degrade actual signal-to-noise as it is likely to pick up a lot of local manmade RF noise and even noise from the receiver itself.

-Scott-

--- In ultralightdx@..., "farmerik" <farmerik@...> wrote:

Do others here agree the PL-380 and the WRX 911 both connect the AM tank circuit to the whip antenna? I don't have either here, but I do have a PL 310. If this is true, than an external antenna could be attached to the whip for AM? That is how I read the article, but I am not sure. Anyone want to comment? - FARMERIK

--- In ultralightdx@..., "gkinsman1" <gkinsman@> wrote:

Hello all,

Bill (Radio-Timetraveller) has posted an extensive review of the PL-380 on his blog.

http://radio-timetraveller.blogspot.com/

Based on his review, and the earlier review by Gary De Bock, I decided to finally buy one.

Regards,
Gary


Re: New DSP receiver announced by Elektor

sdwillingham
 

The Si4735 is the same as an Si4734 with an added RDS/RBDS decoder and optional digital audio output interface. So RF capabilities are identical -- no SSB.

-Scott-

--- In ultralightdx@..., "farmerik" <farmerik@...> wrote:


It talks about being for use by Hams. Does it tune SSB? - FARMERIK


--- In ultralightdx@..., "Mike Mayer" <mwmayer@> wrote:

OK, all I needed to do was look a little further on the web site to find the
bill of materials.



So it is easy to see what components are necessary.



==========================================================
Mike Mayer
mwmayer@

_____

From: ultralightdx@... [mailto:ultralightdx@...] On
Behalf Of Dave
Sent: Monday, June 28, 2010 2:34 PM
To: ultralightdx@...
Subject: Re: [ultralightdx] New DSP receiver announced by Elektor





Is the the same chip as the Sony XDR-F1HD ? I presume not

On 28 June 2010 20:29, Mike Mayer <mwmayer@tds. <mailto:mwmayer@>
net> wrote:



That looks very interesting. I wonder of there are any components that are
hard to source outside of Europe. If you buy the bare PCB that would be a
concern.



==========================================================
Mike Mayer
mwmayer@tds. <mailto:mwmayer@> net

_____

From: ultralightdx@ <mailto:ultralightdx@...> yahoogroups.com
[mailto:ultralightdx@ <mailto:ultralightdx@...> yahoogroups.com]
On Behalf Of Wolfgang H
Sent: Monday, June 28, 2010 1:13 PM
To: ultralightdx@ <mailto:ultralightdx@...> yahoogroups.com
Subject: [ultralightdx] New DSP receiver announced by Elektor





Hello,

in the Juli/August Elektor there is the first part of a DSP-receiver
pbulished with the Silicon Labs IC SI4735. In the classical ultralights from
China are based on the SI4734 chip.

The second part of the article will be published in the September issue of
the magazin.

The receiver is able to work as standalone receiver. Second possiblity is to
go by USB.

And it should be able to be programmed by an experienced user.

A usefull feature ist the ability to use external special antennas as ferrit
rod or sw-special antenna.

The fully tested receiver will be delivered in few weeks.

Have a look on the Elektor website.

Wolfgang Hartmann, N�rnberg