[App_rpt-users] Question

Bob Brown - WØNQX bbrown at byrg.net
Thu Sep 9 14:00:24 EDT 2010


well that is a mouth full to say the least

but  it is a doable task.

may take me some time to learn this process

but sweeping audio  passbands  ez to do i have those tools at my disposal..

the other stuff .. well a small learning curve but i think it is doable.

and as for the "FOB"

~~~SNIP~~~
Besides, 'FROB' will generate even more questions and strange looks then
'FOB'
would anyway, and if you see someone giving you a smug grin (and they appear
to
be at least 50 years old), you should probably strongly encourage them to
join
you singing a bar or 2 of 'Alice's PDP-10' (see
http://www.hactrn.net/sra/alice).
"You can hack anything you want, with TECO and DDT"....
~~~SNIP

I can relate to this too...hihi ;)



--
Thanks in Advance

   Bob Brown, WØNQX

   Kansas City Metro Area

   http://sm0kenet.net

   http://byrg.net

   http://kcdstar.byrg.net

Quis custodiet ipsos custodes?

Its not how many watts you have,
its the SIZE of your watts that matter! -- Johnny Marshall, W0JM-SK

--



On Thu, Sep 9, 2010 at 12:45, Jim Duuuude <telesistant at hotmail.com> wrote:

> okay... you asked...
>
> First of all you need to get the detailed datasheet on the device
> especially
> the info on the HID interface part of the device (as far as what info is
> available
> to be sent/received about the IO pins, so that you can sense/control them).
> As an illustration of this, I included a copy of the CM108 datasheet. See
> section
> 7.4 on page 20 to see what I am talking about. Read the whole document
> regarding
> the HID interface. If this doesn't confuse and discourage you (it did me)
> please continue.
>
> Then you need to see if the device REALLY has the audio quality necessary
> for the task.
> It MUST have completely flat linear response from DC (yes, I REALLY MEAN
> DC!!!) to at
> least 20 KHz (so that squelch can be processed properly) at a sample rate
> of 48K Sampes/Sec.
> The device also must be capable of variable input and output gain in a
> reasonable range
> on par with the CM-108. I dont care what the specs say, you MUST verify
> this and see it for
> yourself by doing an audio sweep test and seeing its response (both in and
> out).
>
> If you happen to get this far, then you need to modify the HID routines (in
> chan_usbradio)
> to accommodate whatever the device does with its HID to make the IO work,
> and also possibly
> the routines that deal with audio gain settings of the device.
>
> Well, you asked....
>
> JIM
>
>
> ------------------------------
> Date: Thu, 9 Sep 2010 10:47:20 -0500
> From: bbrown at byrg.net
> To: w0otm at w0otm.com; app_rpt-users at qrvc.com
>
> Subject: Re: [App_rpt-users] Question
>
> sorry to have opened this can of worms marshall, nothing personal taken
> here.
>
> yes ,the DMK device, is a quality device and we have used a few of them
> with great results, so for quality and consistency by all means use the DMK
> device!
>
> but some of our systems are done on a "beer buget" and have been for a
> great long time and they work quite well,  last long time.
>
> so we want to add the App_rpt function to these systems and want to do it
> on the low cost side. so we use the cm108 based fob.
>
> we started out with these devices, learned a lot with these devices and
> still wish to use these devices, because of cost savings. ( we dont have a
> dues paying membership in our organization, we do it for the fun of ham
> radio!)
>
> yes maybe we could have bought a couple of DMKs verses the many  10+ fobs i
> have bought. but hey if they all were cm108 based them i would have many
> usable devices to play with. some were not cm 108 based, some were. so i
> gambled with my $$,  win some loose some. no big deal.
>
> if i knew a bit more on how to make the non standard fobs play with the
> app_rpt program i would be experimenting with it, but i do not have those
> skills yet.
>
> would some one like to share on how they got the cm108 device to work
> i would entertain on being shown a how to if possible or a link to where i
> can study up on this.
> as i have a few knock off samples to test and play with.
> i just cannot believe they cannot be made to work the same way as
> the cm108 device.
>
> yes it takes time to compile and test the devices and time i have, in fact
> several of us here in the kc metro area have time and facilities to test
> with .  just tell us how it was done...and we can/will start playing....  to
> come up with a solution.
> or if jim wants we can ship him the devices we have and he can tell us if
> it is possible to change the code for these units.
>
> i like the fact all i need is PTT, discrimiator and tx audio to make a
> system work . i could careless about COS/TOS from the radio. this makes an
> interface real EZ! and the software makes the controller.
>
> i am not a programmer but i have learned a lot from the elmers on this list
> these folks in particular:
> w9sh
> n4irs
> wb6nil
> kd8b
> wa6zft
> and many others.
>
> to those i give many thanks for the help & enlightenment.....
>
>
> --
> Thanks in Advance
>
>    Bob Brown, WØNQX
>
>    Kansas City Metro Area
>
> Its not how many watts you have,
> its the SIZE of your watts that matter! -- Johnny Marshall, W0JM-SK
> --
>
>
>
> On Thu, Sep 9, 2010 at 09:34, Marshall Dias <w0otm at w0otm.com> wrote:
>
> This is MY opinion and may not be the opinion of the AllStar Team.
>
> What is the obsession with these FOBs?  This community has a great source
> of quality interfaces, and there is NO reason not to utilize them.  DMK
> doesn't HAVE to provide the URI, but thankfully they do.  For all you who
> have bought knockoff FOBs with the hopes of them being a CM108, how much
> money have you wasted? If you are too cheap to buy a URI, go run an
> EchoStink node!
>
> ok, im off my soapbox, thanks
>
> md
> **
>
> ------------------------------
> *From*: "Bob Brown - WØNQX" <bbrown at byrg.net>
> *Sent*: Thursday, September 09, 2010 9:27 AM
> *To*: "Jim Duuuude" <telesistant at hotmail.com>
>
> *Subject*: Re: [App_rpt-users] Question
>
>
> Jim
>
> If you would like samples of some of the ones i have obtained,
> thinking they were cm-108 based and they were not.....:(
>
> i can send you a few for testing & evauation.
>
> if it would make the fobs ezer to add since there seems to be a glut of the
> "clones" out there.
> i have bought so many of these from the C.H.Ina co via the usual hong-knog
> souces.
>
> i have a few so a wide and varried sample for testing is not a problem
> they are just cluttering up the desk...
>
>
>
>
> --
> Thanks in Advance
>
>    Bob Brown, WØNQX
>
>    Kansas City Metro Area
>
>    http://sm0kenet.net
>
>    http://byrg.net
>
>    http://kcm-108dstar.byrg.net
>
> Quis custodiet ipsos custodes?
>
> Its not how many watts you have,
> its the SIZE of your watts that matter! -- Johnny Marshall, W0JM-SK
> --
>
>
>
> On Thu, Sep 9, 2010 at 09:35, Jim Duuuude <telesistant at hotmail.com> wrote:
>
> The CM-108 and its fully compatible cousins (all from C-Media) are still
> very much
> in production and available as far as the actual IC goes. As far as
> pre-made USB soundcards
> that use these IC's go, yes it is seemingly more difficult to find such
> things. The CM-108
> was selected, because, at the time, it was by far the most common IC found
> in such devices
> and was of EXTREMELY high quality, reliability, and consistency (not to
> mention VERY good
> value!).
>
> Nowadays, is there once again, a generalized consensus focused upon some
> new, different,
> IC, or are all the available (and inexpensive) USB sound cards pretty much
> just random??
> I haven't, nor have I had time to even look lately. If there is, perhaps it
> would be worthwhile
> to see if whatever this device is meets the requirements for this
> application.
>
> If there is something worth checking out, I am not adverse to doing so.
>
> JIM WB6NIL
>
>
>
> > Date: Thu, 9 Sep 2010 07:35:01 -0400
>
> > Subject: Re: [App_rpt-users] Question
> > From: steve at michiganbroadband.com
> > To: telesistant at hotmail.com
> > CC: n3fe at repeater.net; app_rpt-users at qrvc.com
>
> >
> >
> > Noted! & I know you are speaking from experience and trying to warn
> > others as they will end up wasting lots of time.
> >
> > Just curious if there are any plans for future support of other tested
> > & approved sound devices eventually?
> >
> > Or do you think the CM108 will be available for years to come?
> > I'm under the impression they're getting harder & harder to actually
> find.
> >
> > Just curious & thanks.
> >
> > Steve
> > N8LBV
> >
> >
> >
> >
> >
> >
> >
> > >
> > > JUST DONT DO IT!!! There is a reason that we dont support regular sound
> > > cards.
> > > THEY DONT WORK WORTH A POO! They sound terrible, and are inconsistent.
> > > Friends dont let friends use internal soundcards to interface to radio
> > > systems.
> > >
> > > JIM WB6NIL
> > >
> > > Date: Wed, 8 Sep 2010 09:08:23 -0400
> > > From: n3fe at repeater.net
> > > To: app_rpt-users at qrvc.com
> > > Subject: [App_rpt-users] Question
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > I have been having a heck of a time trying to find a fob with a
> > > cm108 chip in it. I have 5 fobs here all from different suppliers and
> > > none of
> > > them have the right chip even though they were listed as a cm108.
> > >
> > >
> > >
> > > I had seen a alsaradio channel driver and tried that but it
> > > errors our asterisk with a 127 error. Is there anything out there so
> that
> > > we
> > > can use serial/soundcard interfacing instead of a fob or the expensive
> > > quad
> > > card?
> > >
> > >
> > >
> > > Corey N3FE
> > >
> > >
> > >
> > > --
> > > This message has been checked 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
> > > --
> > > This message has been scanned for viruses and
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> > > believed to be clean.
> > >
> > > _______________________________________________
> > > App_rpt-users mailing list
> > > App_rpt-users at qrvc.com
> > > http://qrvc.com/mailman/listinfo/app_rpt-users
> > >
> >
> >
> > Michigan Broadband Systems Inc.
> > "Always Connected"
> >
> > (734)527-7150
> >
> > Steve's cellphone: (734)904-1811
> >
> >
> > --
> > This message has been scanned for viruses and
> > dangerous content by MailScanner, and is
> > believed to be clean.
> >
>
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>
>
>
>
>
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