[1000mp] 1000mp Digest, Vol 112, Issue 8

Wed Mar 26 02:09:39 EDT 2014

I'd be very interested in this Todd, very frustrating that the 1000mp has
no IF output socket.

73 Jeff M1BCM

On Tue, Mar 25, 2014 at 4:00 PM, <1000mp-request at mailman.qth.net> wrote:

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> Today's Topics:
>
>    1. Bandscope (Tod Olson)
>    2. Re: Bandscope (WD8ARZ)
>    3. Re: Bandscope (Tod Olson)
>    4. Re: Bandscope (WD8ARZ)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 25 Mar 2014 00:06:09 -0600
> From: Tod Olson <tod at k0to.us>
> To: Ft1000MP <1000mp at mailman.qth.net>
> Subject: [1000mp] Bandscope
> Message-ID: <CF56760B.1A9E2%tod at k0to.us>
> Content-Type: text/plain;       charset="ISO-8859-1"
>
> I am exploring using one of the TV dongles to pick up the 70.45 Mhz signal
> or the 45 Mhz signal(alt rcvr) and use it with existing SDR software to
> create a bandscope for the FT1000MP. Because the TV unit has only 8 bits,
> the range will only be about 50 dB. [ that is the same as the ICOM 756 Pro
> ].
>
> Early experimenting indicates that the bandscope software and display can
> run in parallel with other programs on a ?modern? PC computer. Something
> capable of running Windows 7. The bandscope could have, but does not
> require, a separate monitor.
>
> If there is any interest on the part of others for such a unit I would like
> to know about it. The unit would be powered by USB, not require a sound
> card, would have bidirectional control of frequency <tune the radio and the
> center frequency tracks or click on a displayed signal and the radio
> frequency is changed to the ?clicked? signal frequency.>
>
> The dongles seem to be priced around $25. The software is currently
> freeware.
>
> Tod, K0TO
>
> >
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 25 Mar 2014 07:17:16 -0400
> From: WD8ARZ <wd8arz at comcast.net>
> To: All about Yaesu 1000mp <1000mp at mailman.qth.net>
> Subject: Re: [1000mp] Bandscope
> Message-ID: <533165BC.3080008 at comcast.net>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Sounds like you have a very worth while project idea there Tod. Am very
> interested for sure.
>
> My first band-scope on my FT-1000MP was using the CRT type display of
> the Heathkit SM-220 Station Monitor with the BS-8 band scope module.
> Used a low pico value capacitor to tap off the receiver I.F. and
> connected it to the rca phono jack on the back that was for memory
> battery back up power.
>
> Then I switched to your idea about ten years ago, but using a SDR-IQ
> receiver http://www.rfspace.com/RFSPACE/SDR-IQ.html and the SpectraVue
> software http://www.rfspace.com/RFSPACE/SpectraVue.html
>
> The SDR-IQ and SpectraVue work hand in hand so that when you tune the
> FT-1000MP the SDR-IQ tuned with it, and visa versa. No tap into the
> receiver I.F. was needed. The ham antenna was used for both the MP and
> the IQ.
>
> Caution: One must use some sort of front end protection method for the
> SDR to avoid transmitting into that receiver and damaging it. There are
> a variety of options one can do to achieve that purpose.
>
> 73 from Bill - WD8ARZ
>
> On 3/25/2014 2:06 AM, Tod Olson wrote:
> > I am exploring using one of the TV dongles to pick up the 70.45 Mhz
> signal
> > or the 45 Mhz signal(alt rcvr) and use it with existing SDR software to
> > create a bandscope for the FT1000MP. Because the TV unit has only 8 bits,
> > the range will only be about 50 dB. [ that is the same as the ICOM 756
> Pro
> > ].
> >
> > Early experimenting indicates that the bandscope software and display can
> > run in parallel with other programs on a ?modern? PC computer. Something
> > capable of running Windows 7. The bandscope could have, but does not
> > require, a separate monitor.
> >
> > If there is any interest on the part of others for such a unit I would
> like
> > to know about it. The unit would be powered by USB, not require a sound
> > card, would have bidirectional control of frequency <tune the radio and
> the
> > center frequency tracks or click on a displayed signal and the radio
> > frequency is changed to the ?clicked? signal frequency.>
> >
> > The dongles seem to be priced around $25. The software is currently
> > freeware.
> >
> > Tod, K0TO
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 25 Mar 2014 08:37:12 -0600
> From: Tod Olson <tod at k0to.us>
> To: Ft1000MP <1000mp at mailman.qth.net>
> Subject: Re: [1000mp] Bandscope
> Message-ID: <CF56EFC4.1C83F%tod at k0to.us>
> Content-Type: text/plain;       charset="UTF-8"
>
> Thanks for the advice Bill.
>
> The first Law of Life is:
>
> "Trauma Teaches; but it doesn?t have to be your trauma."
>
> I hope I can avoid the front end problem you mention.
> I did plan to use a very small cap to tap into the IF chain rather than
> the RF antenna input.
>
> Are you still using the bandscope setup you describe?
>
> Tod
>
>
>
> On 3/25/14, 5:17 AM, "WD8ARZ" <wd8arz at comcast.net> wrote:
>
> >Sounds like you have a very worth while project idea there Tod. Am very
> >interested for sure.
> >
> >My first band-scope on my FT-1000MP was using the CRT type display of
> >the Heathkit SM-220 Station Monitor with the BS-8 band scope module.
> >Used a low pico value capacitor to tap off the receiver I.F. and
> >connected it to the rca phono jack on the back that was for memory
> >battery back up power.
> >
> >Then I switched to your idea about ten years ago, but using a SDR-IQ
> >receiver http://www.rfspace.com/RFSPACE/SDR-IQ.html and the SpectraVue
> >software http://www.rfspace.com/RFSPACE/SpectraVue.html
> >
> >The SDR-IQ and SpectraVue work hand in hand so that when you tune the
> >FT-1000MP the SDR-IQ tuned with it, and visa versa. No tap into the
> >receiver I.F. was needed. The ham antenna was used for both the MP and
> >the IQ.
> >
> >Caution: One must use some sort of front end protection method for the
> >SDR to avoid transmitting into that receiver and damaging it. There are
> >a variety of options one can do to achieve that purpose.
> >
> >73 from Bill - WD8ARZ
> >
> >On 3/25/2014 2:06 AM, Tod Olson wrote:
> >> I am exploring using one of the TV dongles to pick up the 70.45 Mhz
> >>signal
> >> or the 45 Mhz signal(alt rcvr) and use it with existing SDR software to
> >> create a bandscope for the FT1000MP. Because the TV unit has only 8
> >>bits,
> >> the range will only be about 50 dB. [ that is the same as the ICOM 756
> >>Pro
> >> ].
> >>
> >> Early experimenting indicates that the bandscope software and display
> >>can
> >> run in parallel with other programs on a ?modern? PC computer. Something
> >> capable of running Windows 7. The bandscope could have, but does not
> >> require, a separate monitor.
> >>
> >> If there is any interest on the part of others for such a unit I would
> >>like
> >> to know about it. The unit would be powered by USB, not require a sound
> >> card, would have bidirectional control of frequency <tune the radio and
> >>the
> >> center frequency tracks or click on a displayed signal and the radio
> >> frequency is changed to the ?clicked? signal frequency.>
> >>
> >> The dongles seem to be priced around $25. The software is currently
> >> freeware.
> >>
> >> Tod, K0TO
> >______________________________________________________________
> >1000mp mailing list
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> >Help: http://mailman.qth.net/mmfaq.htm
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> >
> >This list hosted by: http://www.qsl.net
> >Please help support this email list: http://www.qsl.net/donate.html
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 25 Mar 2014 11:39:25 -0400
> From: WD8ARZ <wd8arz at comcast.net>
> To: All about Yaesu 1000mp <1000mp at mailman.qth.net>
> Subject: Re: [1000mp] Bandscope
> Message-ID: <5331A32D.4040808 at comcast.net>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Am not actually doing that at this time, but it is a simple matter of
> plugging and using it. I tend to use the SM-220 station scope on the
> Icom IC-720, some times on the FT-1000MP, but I prefer to use the SDR-IQ
> on the FT-1000MP. Can listen to two stations on the MP, and two more on
> the SDR-IQ. Makes it easy to find friends and to listen to dual
> frequency communications where there is an offset between transmit and
> receive ... such as our 10M FM and ship to shore communications.
>
> Most of my time on HF and the ham bands is listening. So I frequently
> use the SDR-IQ on a laptop for my listening needs. Sometimes record a
> couple hundred kilohertz of band space to the hard drive when I am
> looking for certain activity I want to step through the recorded file
> spectrum later. Can find missed signals and allows for changing modes,
> band width, and other factors on the recorded signal as if it was live
> and in real time ... find that very useful on figuring out what it takes
> to decode certain digital modes. Even for DRM stations.
>
> The SDR-IQ is not cheap, so your project is much needed. Dont let me
> change your mind, that wasnt my effort. Was just wanting to give you a
> reference that might be useful.
>
> One pet peeve I have: I Dont Like SDR units that Must Use A Sound Card
> To Process The I and Q signals. That loads up the resources of the
> computer, is very dependent on sound card spec and performance. The
> sound card performance is also affect by a lot of activity on a computer.
>
> All those concerns go away when the true processing of those I and Q
> signals are done out side the computer, and only the actual audio our
> ears need to hear goes to the sound card of the computer. Remember, my
> pet peeve ... and one that most others dont know about or will
> understand. They end up just saying such and such a SDR module and
> software wont work on my computer .... while others say it works just
> fine here, and yet they dont realize what the issues are that they
> really do have ....
>
> 73 from Bill - WD8ARZ
>
> On 3/25/2014 10:37 AM, Tod Olson wrote:
> > Thanks for the advice Bill.
> >
> > The first Law of Life is:
> >
> > "Trauma Teaches; but it doesn?t have to be your trauma."
> >
> > I hope I can avoid the front end problem you mention.
> > I did plan to use a very small cap to tap into the IF chain rather than
> > the RF antenna input.
> >
> > Are you still using the bandscope setup you describe?
> >
> > Tod
> >
> >
> >
> > On 3/25/14, 5:17 AM, "WD8ARZ" <wd8arz at comcast.net> wrote:
> >
> >> Sounds like you have a very worth while project idea there Tod. Am very
> >> interested for sure.
>
>
> ------------------------------
>
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> End of 1000mp Digest, Vol 112, Issue 8
> **************************************
>

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