From zn000h at gmail.com Wed Jun 1 09:19:52 2011 From: zn000h at gmail.com (Benedikt Heinz) Date: Wed, 1 Jun 2011 11:19:52 +0200 Subject: Fun Cube Dongle Pro internals In-Reply-To: <20110529161611.GB4532@prithivi.gnumonks.org> References: <20110529161611.GB4532@prithivi.gnumonks.org> Message-ID: Hi! 2011/5/29 Harald Welte : > Hi! > > For those interested, I've taken apart the case and did some > investigation how the FCDP hardware architecture looks like. > > The results are available at > http://tetra.osmocom.org/trac/wiki/Funcube_Dongle That's quite interesting as the E4000 seems to handle all the analog stuff without external LNA, etc. Simplifies things a lot. > It seems the silicon tuner actually is intended for DVB-T, thus the > bandwidth it can down-convert is _much_ higher. ?However, the audio > codec that they use can only do 96kHz. > > That's actually really sad. ?I wish they had used something with higher > ADC rate. ?But it seems like even high-end audio codecs never get you > beyond 196/216 kHz - still insufficient for e.g. GSM. I wasn't able to find the output bandwidth of the E4000 somewhere on the website. Do you have an idea of the bw? Still, gluing a faster dual-ADC plus hi-speed USB IF to the tuner shouldn't be that much of a problem. It seems though, the E4000 can only be obtained from Elonics. No luck with digikey, R+S, farnell... Maybe we should try to ask Elonics if they'd be willing to provide some samples+datasheet and the DVB-T reference design. If we somehow could put an open design together, I guess we could find someone to build+sell larger quantities. I really would be interested in such a dongle w/ faster ADCs. What do you think? Regards, Benedikt / hunz From ny_farhad at yahoo.com Wed Jun 1 12:56:25 2011 From: ny_farhad at yahoo.com (Farhad Abdolian) Date: Wed, 1 Jun 2011 05:56:25 -0700 (PDT) Subject: Fun Cube Dongle Pro internals In-Reply-To: References: <20110529161611.GB4532@prithivi.gnumonks.org> Message-ID: <161054.71916.qm@web65412.mail.ac4.yahoo.com> Hi, I am in the process of building a small unit with the E4000 connected to our mini-USRP design. We expecting the receiver board to be ready by the end of August. The device is under NDA, you need to sign and NDA with the company in order to get their datasheet. And once they have approved your company they will send you the datasheet as well as the name of their local distributer. The device has an internal programmable IF RC Filter between 1MHz and 21.4 MHz in 16 steps. BR,/Farhad >________________________________ >From: Benedikt Heinz >To: Harald Welte >Cc: tetra at lists.osmocom.org >Sent: Wednesday, June 1, 2011 11:19 AM >Subject: Re: Fun Cube Dongle Pro internals > >Hi! > >2011/5/29 Harald Welte : >> Hi! >> >> For those interested, I've taken apart the case and did some >> investigation how the FCDP hardware architecture looks like. >> >> The results are available at >> http://tetra.osmocom.org/trac/wiki/Funcube_Dongle > >That's quite interesting as the E4000 seems to handle all the analog >stuff without external LNA, etc. >Simplifies things a lot. > >> It seems the silicon tuner actually is intended for DVB-T, thus the >> bandwidth it can down-convert is _much_ higher. ?However, the audio >> codec that they use can only do 96kHz. >> >> That's actually really sad. ?I wish they had used something with higher >> ADC rate. ?But it seems like even high-end audio codecs never get you >> beyond 196/216 kHz - still insufficient for e.g. GSM. > >I wasn't able to find the output bandwidth of the E4000 somewhere on >the website. Do you have an idea of the bw? >Still, gluing a faster dual-ADC plus hi-speed USB IF to the tuner >shouldn't be that much of a problem. > >It seems though, the E4000 can only be obtained from Elonics. No luck >with digikey, R+S, farnell... >Maybe we should try to ask Elonics if they'd be willing to provide >some samples+datasheet and the DVB-T reference design. >If we somehow could put an open design together, I guess we could find >someone to build+sell larger quantities. > >I really would be interested in such a dongle w/ faster ADCs. >What do you think? > >Regards, > >Benedikt / hunz > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From laforge at gnumonks.org Thu Jun 2 14:57:31 2011 From: laforge at gnumonks.org (Harald Welte) Date: Thu, 2 Jun 2011 16:57:31 +0200 Subject: Fun Cube Dongle Pro internals In-Reply-To: References: <20110529161611.GB4532@prithivi.gnumonks.org> Message-ID: <20110602145731.GG30930@prithivi.gnumonks.org> Hi Hunz, On Wed, Jun 01, 2011 at 11:19:52AM +0200, Benedikt Heinz wrote: > > The results are available at > > http://tetra.osmocom.org/trac/wiki/Funcube_Dongle > > That's quite interesting as the E4000 seems to handle all the analog > stuff without external LNA, etc. Simplifies things a lot. yes, one of those highly integrated silicon tuners. Lots of voodoo, no documentation. welcome to the brave new world :( > I wasn't able to find the output bandwidth of the E4000 somewhere on > the website. Do you have an idea of the bw? i think this was answered before. in the QT gui application you can select something like up to 21 MHz. And as it is intended as a DVB tuner, I would expect usual DVB bandwidths. > I really would be interested in such a dongle w/ faster ADCs. > What do you think? As indicated on IRC/jabber, some of the 'usual suspects' are already looking into this. it's too early to commit to anything, though. -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) From chris at orr.me.uk Fri Jun 3 20:39:37 2011 From: chris at orr.me.uk (Christopher Orr) Date: Fri, 03 Jun 2011 22:39:37 +0200 Subject: experience with fcdp In-Reply-To: <4DDCB721.9010703@maintech.de> References: <4DDCB721.9010703@maintech.de> Message-ID: <4DE94689.50904@orr.me.uk> > You might try a filter between antenna and Funcube or try to use an > antenna that is only sensitive in a small part of the Tetra band. Do not > use one of these DVB-T mini antennas that come with the USB sticks. > These are optimized for covering the whole TV band. This includes Tetra > but also everyting else :/ On that subject, can anybody recommend a good portable antenna for use with the FCDP? At home, I can pick out some (presumably) TETRA signals (in NRW, DE) by hooking up to a DVB-T booster antenna I have and scanning around 420MHz. As mentioned, portable laptop antennae like those for WLAN and DVB aren't ideal. So I'd be interested in finding something to use while out-and-about with the FCDP, which could be good for picking up the most common TETRA bands. Thanks, Chris From datacop at wireloss.net Fri Jun 3 21:26:27 2011 From: datacop at wireloss.net (Clemens Hopfer) Date: Fri, 3 Jun 2011 23:26:27 +0200 Subject: UHD based demod script Message-ID: <201106032326.32078.datacop@wireloss.net> Hi, I've modified the usrp2 script to use the UHD gnuradio driver for new USRP (UHD-only) hardware. It seems to work with my N200+WBX setup, but gnuradio is pretty new to me, so there might be some bugs. Since I'm using the WBX my antenna port is 'TX/RX'. I'm not sure if this is a good default value, it's configurable though. Clemens Hopfer -------------- next part -------------- A non-text attachment was scrubbed... Name: uhd-tetra_demod.py Type: text/x-python Size: 4503 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: From laforge at gnumonks.org Sat Jun 4 06:53:36 2011 From: laforge at gnumonks.org (Harald Welte) Date: Sat, 4 Jun 2011 08:53:36 +0200 Subject: UHD based demod script In-Reply-To: <201106032326.32078.datacop@wireloss.net> References: <201106032326.32078.datacop@wireloss.net> Message-ID: <20110604065336.GH17178@prithivi.gnumonks.org> On Fri, Jun 03, 2011 at 11:26:27PM +0200, Clemens Hopfer wrote: > Hi, > > I've modified the usrp2 script to use the UHD gnuradio driver for new USRP > (UHD-only) hardware. thanks for sharing, I've committed it to the repository. -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) From laforge at gnumonks.org Sat Jun 4 06:59:08 2011 From: laforge at gnumonks.org (Harald Welte) Date: Sat, 4 Jun 2011 08:59:08 +0200 Subject: experience with fcdp In-Reply-To: <4DE94689.50904@orr.me.uk> References: <4DDCB721.9010703@maintech.de> <4DE94689.50904@orr.me.uk> Message-ID: <20110604065908.GI17178@prithivi.gnumonks.org> Hi Christopher, On Fri, Jun 03, 2011 at 10:39:37PM +0200, Christopher Orr wrote: > On that subject, can anybody recommend a good portable antenna for > use with the FCDP? > > At home, I can pick out some (presumably) TETRA signals (in NRW, DE) > by hooking up to a DVB-T booster antenna I have and scanning around > 420MHz. > > As mentioned, portable laptop antennae like those for WLAN and DVB > aren't ideal. So I'd be interested in finding something to use > while out-and-about with the FCDP, which could be good for picking > up the most common TETRA bands. I'm using a combination of digikey numbers ANT-418-CW-HWR-RPS-ND and ACX12470ND with my FCDP. The other thing that I've ordered (but not yet received) is a car antenna with magnetic foot: Procom MU 4-MM/CEL4 (the MM indicates the magnetic foot, you can get any other mounting option that Procom supports) This is a 4dB gain antenna for the 414 - 430 MHz range. They have other antennas for different ranges like 380-400 MHz (CEL5): http://www.procom.dk/eng/Page_menu/Products/Mobile_Antennas/225_-_470_MHz/Gewinnantennen/MU_4-X For the Procom antennas you typically need a FME cable plus a FME-SMA adapter. Regards, Harald -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) From laforge at gnumonks.org Fri Jun 24 19:32:16 2011 From: laforge at gnumonks.org (Harald Welte) Date: Fri, 24 Jun 2011 21:32:16 +0200 Subject: Chaosradio Express #183 on TETRA Message-ID: <20110624193216.GC11159@prithivi.gnumonks.org> Hi all, The latest Chaosradio Express (CRE) episode has just been released, and it is about trunked radio, TETRA, security aspects and the Osmocom TETRA project. http://chaosradio.ccc.de/cre183.html (and yes, it's German, like all CRE episodes...) -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)