Yes, I started using a battery after Walter said he was using it for mobile work.
When I demostrate the SM1000 now, I just hang a 9v bat on it for power. AOR's had a ARD9000 had a battery "option." But bats take up a lot of space, so this may not be an option at this late in the design. Mel ----- Original Message ----- From: "David Rowe" <da...@rowetel.com> To: <freetel-codec2@lists.sourceforge.net> Sent: Friday, September 11, 2015 1:13 AM Subject: Re: [Freetel-codec2] SM1000 phantom power > Thank you for the suggestion Walter. I never imagined it would run off > a PP3! I think Matt measured the quiescent power as 30ish mA. IIRC > it's the speaker amp that uses the most current, but only when the > volume is wound up. > > - David > > On 10/09/15 12:22, Walter Holmes wrote: >> If the case could be removed faster, then a place for a 9v battery on the >> inside would be great. >> >> I have been using mine for many weeks on a 9v battery and I don't have to >> worry about power from a potentially noisy source like my vehicle's power >> line. >> >> The SM1000 draws such little power, if I have to change out the battery >> every 3 to 6 months, no big deal at all. >> >> I guess I could use rechargeable batteries and change them more >> frequently, >> but batteries are cheap, and easy to find anywhere. >> >> Walter/K5WH >> >> -----Original Message----- >> From: David Rowe [mailto:da...@rowetel.com] >> Sent: Wednesday, September 09, 2015 6:54 PM >> To: freetel-codec2@lists.sourceforge.net; Matthew Cook <vk...@bistre.net> >> Subject: [Freetel-codec2] SM1000 phantom power >> >> Hello list, >> >> A few people have modified their SM1000 to draw power from their radio >> via >> the RJ45 connector. >> >> Rick and I have considered this a few times but to date have decided NOT >> to >> provide a power on the patch panel to date - as we are concerned about >> (i) >> possible damage to radios and (ii) variable operation of the SM1000. The >> type of power (e.g 8V, 12V, current) available varies widely. >> >> The flip side is it simplifies set up of the SM1000 - just one cable, and >> the RJ45 locks positively compared to the DC connector. >> >> Would be interested in your thoughts! Rick and I are currently working >> on >> Rev F so now is the time to speak up. >> >> Thanks, >> >> David >> >> On 10/09/15 07:16, David Rowe wrote: >>> Hi Alfred, >>> >>> codec2-dev is likely to change at any time. I need that ability for >>> my development. However the stable releases and FreeDV API version >>> number are there to control exactly the situation you are concerned >>> with. >>> >>> Cheers, >>> >>> David >>> >>> On 09/09/15 16:45, wully wrote: >>>> Hi David >>>> >>>> Very nice! But please don't change the interface to often, because we >>>> are just at the point to test 700B in the wide field (current conds >>>> are very bad, so this will take time). It is very important, to have >>>> a stable environment to be sure about the effects on the air. When >>>> experimenting and not knowing wether the other station has the same >>>> mode, we will not come to positive conclusions. >>>> >>>> Thank you for all your efforts! >>>> 73, hb9epu, Alfred >>>> >>>> On 08.09.2015 22:53, David Rowe wrote: >>>>> James Ahlstrom has submitted a fine patch to enable FreeDV 700 to >>>>> run at a sample rate of 8000 Hz rather than the rather obscure 7500 >>>>> Hz. I thought it would be useful to document the testing here: >>>>> >>>>> http://www.rowetel.com/blog/?p=4561 >>>>> >>>>> This means some changes to the FreeDV GUI software (freedv-dev won't >>>>> build atm), which I'll clean up and test over the next week or so. >>>>> >>>>> - David >>>>> >>>>> -------------------------------------------------------------------- >>>>> ---------- _______________________________________________ >>>>> Freetel-codec2 mailing list >>>>> Freetel-codec2@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>>> >>>> >>>> --------------------------------------------------------------------- >>>> --------- Monitor Your Dynamic Infrastructure at Any Scale With >>>> Datadog! >>>> Get real-time metrics from all of your servers, apps and tools in one >>>> place. >>>> SourceForge users - Click here to start your Free Trial of Datadog now! >>>> http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 >>>> _______________________________________________ >>>> Freetel-codec2 mailing list >>>> Freetel-codec2@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>>> >>> >>> ---------------------------------------------------------------------- >>> -------- Monitor Your Dynamic Infrastructure at Any Scale With >>> Datadog! >>> Get real-time metrics from all of your servers, apps and tools in one >>> place. >>> SourceForge users - Click here to start your Free Trial of Datadog now! >>> http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 >>> _______________________________________________ >>> Freetel-codec2 mailing list >>> Freetel-codec2@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>> >> >> ---------------------------------------------------------------------------- >> -- >> Monitor Your Dynamic Infrastructure at Any Scale With Datadog! >> Get real-time metrics from all of your servers, apps and tools in one >> place. >> SourceForge users - Click here to start your Free Trial of Datadog now! >> http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 >> _______________________________________________ >> Freetel-codec2 mailing list >> Freetel-codec2@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> >> >> ------------------------------------------------------------------------------ >> Monitor Your Dynamic Infrastructure at Any Scale With Datadog! >> Get real-time metrics from all of your servers, apps and tools >> in one place. >> SourceForge users - Click here to start your Free Trial of Datadog now! >> http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 >> _______________________________________________ >> Freetel-codec2 mailing list >> Freetel-codec2@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > > ------------------------------------------------------------------------------ > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 ------------------------------------------------------------------------------ _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
