[App_rpt-users] Cheap USB Fobs

David McGough kb4fxc at inttek.net
Wed Sep 29 15:00:19 EDT 2010


I've used several of these from newegg:

http://www.newegg.com/Product/Product.aspx?Item=N82E16829128002

They're CM108's, not blobs, and fairly easy to modify.

73, David kb4fxc




On Wed, 29 Sep 2010, David Osborn wrote:

> I have used a bunch of these:
> 
> http://www.lindy-usa.com/usb-2-audio-adapter/42961.html
> ( http://www.lindy.co.uk/usb-2-audio-adapter/42961.html for the Brits!!)
> 
> They *are* CM108, and they are not "Blobs". They are a breeze to modify.
> 
> Also - if it's of any interest - they work v-e-r-y well indeed!! 
> 
> David Osborn
> GD4HOZ
> 
> 
> Message: 2
> Date: Wed, 29 Sep 2010 12:21:35 -0400
> From: "Doug Bade" <kd8b at thebades.net>
> Subject: Re: [App_rpt-users] Cheap USB Fobs
> To: "'app_rpt mailing list'" <app_rpt-users at qrvc.com>
> Message-ID: <004001cb5ff2$637e7f70$2a7b7e50$@thebades.net>
> Content-Type: text/plain; charset="us-ascii"
> 
> Jim;
> 
>                 I am not even necessarily advocating them for this
> application. What I can say is ALL of the USB 7.1 devices I have bought or
> physically have had access to have either CM1xx or SSS1623 chipsets.. the
> 5.1 marked devices. all bets are off.. In all the 7.1 sound devices I bought
> that used to be CM1xx, current shipped product have the SSS1623 chips. ( I
> have bought at least 8 or 10 lots of various sellers on Ebay).
> 
>  
> 
>                 Obviously this is all  subject to change at the whim of the
> Chinese sellers/builders. So it is a moving target. I use the ebay search
> of" USB sound 7.1" and then filter by those who do state the chip, but you
> are correct.. several that even USED to be CM1xx are shipping SSS1623 in
> place of CM1xx. and are still claiming to be CM1xx. 
> 
>  
> 
>                 I have not seen any other chips being used in the 7.1
> devices.. but others may weigh in.
> 
>  
> 
> As I stated.. I personally use URI's. I have no pony in the race here. I do
> use them for other things I own about 30 of the little buggers of one
> variety or another. Stay AWAY from the little green meanies for anything
> where high resolution is an issue.. I find their "fidelity" atrocious and
> would not consider them for anything besides a cheap headphone interface for
> a PC with no other sound.. 
> 
>  
> 
> Doug
> 
> KD8B
> 
>  
> 
>  
> 
> From: Jim Duuuude [mailto:telesistant at hotmail.com] 
> Sent: Wednesday, September 29, 2010 12:06 PM
> To: kd8b at thebades.net; app_rpt mailing list
> Subject: RE: [App_rpt-users] Cheap USB Fobs
> 
>  
> 
> As I have stated in the past (and got absolutely no significantly helpful
> response)
> I wil be MORE THEN HAPPY to evaluate whatever "the" popular USB chip is 
> currently, if SOMEONE would PLEASE determine what that is, and demonstate
> to me that it is the case (perhaps by showing me a number of places where
> they
> are available and are clearly documented as to be the desired device. After
> all,
> we cant have people relying on complete luck and/or randomness as far as
> whether
> they are buying an appropriate device).
> 
> Personally, I took a look at various random places, such as EBAY that sell a
> number
> of USB audio devices, and for the most part NONE of them even HINT as to the
> maker/type of USB device contained in them. 
> 
> And then of course, there are the ones that say they are the C-media chip
> and LIE!!
> Poo-ey on them!!!
> 
> JIM WB6NIL
> 
> 
> 
> 
> > From: kd8b at thebades.net
> > To: app_rpt-users at qrvc.com
> > Date: Wed, 29 Sep 2010 11:38:59 -0400
> > Subject: Re: [App_rpt-users] Cheap USB Fobs
> > 
> > JMTek is the vendor for the SS1623 chipset. This chipset works well in
> > windows and other Linux applications such as pcrepeatercontroller etc.. as
> a
> > high quality high scan rate device... It is unfortunate it does not work
> for
> > App_rpt at this time. It does seem to be the currently available successor
> > to the C-Media chip family being found in many sound fobs coming in to the
> > U.S. at this time.. They do work well in many other amateur radio type
> > projects going on.... In general they perform as well as C-Media
> devices...
> > other than using another driver... the I/O pin may or may not be there
> that
> > is used for the PTT, I have not investigated that as I use URI's for
> App-rpt
> > systems I am building...
> > 
> > Doug
> > KD8B 
> > 
> > -----Original Message-----
> > From: app_rpt-users-bounces at qrvc.com
> [mailto:app_rpt-users-bounces at qrvc.com]
> > On Behalf Of Ken
> > Sent: Wednesday, September 29, 2010 10:07 AM
> > To: 'Yokshs'; app_rpt-users at qrvc.com
> > Subject: Re: [App_rpt-users] Cheap USB Fobs
> > 
> > Yes ... it took at >month for me to get mine and even though the package
> has
> > CM-108 written right on it, the chip is identified by Linux as JMTek
> (HY559
> > chip I think). I sent an e-mail expressing my disappointment (which was
> > un-acknowledged by Dealextreme).
> > 
> > I found if you modify the vendor codes in usb_radio.c so that the program
> > thinks this JMTek is actually a C-Media unit, it will scan the fob and
> read
> > audio. It will not turn the red light on for transmit though ... which is
> > immaterial anyway, since you cannot get at the wire you need inside the
> > 'blob' to use for PTT. I think it could be used for my weather radio
> > application, but the software changes would be a bit tricky (for me)
> making
> > some if/and/or logic more complicated - getting the arrangement of left
> and
> > right parenthesis correct eluded on the first try. 
> > 
> > I have one other source on the way now, which would be the preferable
> > solution (no software mod needed). But I will not be surprised if it turns
> > out to have the wrong chip.
> > 
> > Ken
> > 
> > Buyer beware, as usual.
> > www.dinodirect.com/sound-card-adapter-usb-cm108-chipset.html?ddse=CM-108
> > 
> > 
> > 
> > > -----Original Message-----
> > > From: app_rpt-users-bounces at qrvc.com [mailto:app_rpt-users- 
> > > bounces at qrvc.com] On Behalf Of Yokshs
> > > Sent: Wednesday, September 29, 2010 9:43 AM
> > > To: app_rpt-users at qrvc.com
> > > Subject: Re: [App_rpt-users] Cheap USB Fobs
> > > 
> > > 
> > > I received my CM108 fobs yesterday. I ordered them from:
> > > http://www.dealextreme.com/details.dx/sku.21812
> > > 
> > > I haven't had much time to play with them yet, but the IC is a "blob"
> > > much
> > > like the cheapo Ebay fobs.
> > > 
> > > Has anybody had the same problem?
> > > 
> > > 73.
> > > 
> > > Kyle
> > > K0KN
> > > 
> > > _______________________________________________
> > > App_rpt-users mailing list
> > > App_rpt-users at qrvc.com
> > > http://qrvc.com/mailman/listinfo/app_rpt-users
> > 
> > _______________________________________________
> > App_rpt-users mailing list
> > App_rpt-users at qrvc.com
> > http://qrvc.com/mailman/listinfo/app_rpt-users
> > 
> > _______________________________________________
> > App_rpt-users mailing list
> > App_rpt-users at qrvc.com
> > http://qrvc.com/mailman/listinfo/app_rpt-users
> 
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> ------------------------------
> 
> Message: 3
> Date: Wed, 29 Sep 2010 12:22:51 -0400
> From: "Corey Dean   N3FE" <n3fe at repeater.net>
> Subject: Re: [App_rpt-users] Maxtrac as a remote base
> To: "Tony KT9AC" <kt9ac at ameritech.net>,	<app_rpt-users at qrvc.com>
> Message-ID:
> 	<4FFE167BD0613942920A7F182B8595BB7236 at exchange2003.repeater.net>
> Content-Type: text/plain; charset="us-ascii"
> 
> What I do is tap off the channel up and channel downs on the back of the
> head.  Pulsing those to ground will make them change channels.  The
> Radius and Maxtrac are pretty much the same radio with different
> firmware.  I am not sure if the maxtrac would do the BCD method...
> 
>  
> 
> Corey  N3FE
> 
>  
> 
> From: app_rpt-users-bounces at qrvc.com
> [mailto:app_rpt-users-bounces at qrvc.com] On Behalf Of Tony KT9AC
> Sent: Wednesday, September 29, 2010 12:20 PM
> To: app_rpt-users at qrvc.com
> Subject: Re: [App_rpt-users] Maxtrac as a remote base
> 
>  
> 
> Thanks Jim for entertaining and working on the new and undiscovered
> application!
> 
> The GM300 series of radios will do channel-steering, by using a BCD
> design of up to five bits to select between 32 modes. I don't recall if
> the Maxtrac's will do that, but its certainly something that could be
> linked back into a macro, etc.
> 
> Tony
> 
> On 09/29/2010 11:11 AM, Jim Duuuude wrote: 
> 
> That's an interesting question. Obviously the USB device has a couple of
> outputs on
> it that certainly could be accessed by the chan_usbradio and/or
> chan_simpleusb
> modules and controlled through app_rpt. The URI was also designed with
> this in
> mind, being that we brought all the outputs out to the connector.
> 
> In nearly 10 years that this project has been going on, you are the
> FIRST person to
> even ask this question or show any interest in using these outputs. This
> is the main
> reason why I never bothered to implement this functionality.
> 
> Sure, it can be done. Yeah, Ill work on this. Heck, even if you're the
> only person that
> ever uses it, at least you can benefit from the work involved.
> 
> JIM WB6NIL
> 
> > Date: Wed, 29 Sep 2010 10:05:21 -0400
> > From: n3fe at repeater.net
> > To: app_rpt-users at qrvc.com
> > Subject: [App_rpt-users] Maxtrac as a remote base
> > 
> > I have been up and running now for about a month. I have added a
> > maxtrac radio to use as a remote base. On my other controllers I would
> > pulse a line to ground momentarily to move the channel up or down. I
> > have done some reading and I haven't seen anything that talks about
> > app_rpt doing this.
> > 
> > Does asterisk/app_rpt have the ability to work with outputs? What
> would
> > need to be done to be able to do something like this if something
> isn't
> > already in place for it?
> > 
> > Corey N3FE
> > 
> > 
> > --
> > This message was scanned and is believed to be clean.
> > 
> > _______________________________________________
> > App_rpt-users mailing list
> > App_rpt-users at qrvc.com
> > http://qrvc.com/mailman/listinfo/app_rpt-users
> 
> 
> 
>  
>  
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at qrvc.com
> http://qrvc.com/mailman/listinfo/app_rpt-users
>   
> 
> 
> 




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