Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Tom]

Nice work, I’ll have to check mine at 433mhz to see if I get a signal so close 
to the primary.

 

From: HackRF-dev [mailto:hackrf-dev-boun...@greatscottgadgets.com] On Behalf Of 
Glen Overby
Sent: Monday, 5 October 2015 10:08 AM
Cc: hackrf-dev@greatscottgadgets.com
Subject: Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

 

Thanks, Tom, for posting the TX code!  I tried it with the output from the 
hackrf going to my spectrum analyser to see how clean the output is.  Attached 
are three pictures:

2569 - tuned to 144.3mhz
2575 - tuned to 432.2mhz

2579 - tuned to 3456.2mhz

At 144.3mhz there are some other signals, but nothing a good bandpass filter 
shouldn't be able to clean up.

At 432.2mhz there is another strong signal, very close in.

At 3456mhz there are many other signals as strong as the primary signal.

Glen, kc0iyt

 

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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Glen Overby]

Thanks, Tom, for posting the TX code!  I tried it with the output from the
hackrf going to my spectrum analyser to see how clean the output is.
Attached are three pictures:

2569 - tuned to 144.3mhz
2575 - tuned to 432.2mhz
2579 - tuned to 3456.2mhz

At 144.3mhz there are some other signals, but nothing a good bandpass
filter shouldn't be able to clean up.
At 432.2mhz there is another strong signal, very close in.
At 3456mhz there are many other signals as strong as the primary signal.

Glen, kc0iyt
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Tom]

How cool would JT65 be going through a hackrf.
On 24 Sep 2015 11:54 pm, Rich Sanders  wrote:I'm a ham and just recently moved so my equipment isn't setup again (and I probably wont be able to use my old antenna.)  In conjunction, my Linux box crashed and I haven't had the time to reload everything.  To avoid the issues about the transmit and receive, I use two different HackRFs.  My transmit was hooked to a low power home brew amplifier, but could easily be connected to a nice large amp.  Although I had to buy two HackRFs, I am easily able to perform full duplex operations using two half duplex HackRFs.  I also don't have to worry about changing modes in the HackRF.  My software was setup initially using GNURadio, then I modified the python file to suit my needs.Also, there is a ham mode called QRP, which is based along the idea of how far can you communicate with low power.  There is no complete agreement on what constitutes QRP power levels, the two most common accepted power levels for QRP are less than 5 watts and less than 10 watts.  The HackRF excels in this because it is already very low power and building your own home brew amp is relatively easy.I would gladly share these files, but like I said, my Linux box crapped the bed and I haven't had time to reload it.As far as unlicensed bands, the FCC website (for those of us in the USA) is a pain to navigate and their band plans seem to be outdated.Dummy loads are relatively cheap on Ebay and you can find plenty of sites for home brew dummy loads.  The HackRF is low power, so you could get a away with a much lighter dummy load.- RichOn Thu, Sep 24, 2015 at 7:33 AM, Dominic Spill <dominicgs@gmail.com> wrote:On 24 September 2015 at 00:20, Scott Davis <scottk5ta@gmail.com> wrote:
>
> It’s odd that people interested in RX-only would spend the extra money
> instead of getting an RTL or FCD or AirSpy or SDRPlay or….

I think that there are a lot of users transmitting with HackRF, but
even for RX only there are a number of factors that go in to choosing
hardware which may have lead to picking HackRF.  The main ones that I
can think of are frequency range and bandwidth, but there are plenty
more.

> On Sep 23, 2015, at 4:59 PM, Toth, Gregory S <gregory.s.toth@boeing.com>
> wrote:
>
> I assume that even without a license, it is ok to use a 50 ohm coax cable to
> connect the Hack RF antenna jack directly to the input of an appropriate
> receiver? Probably could use an inline attenuator just in case.
>
> From: HackRF-dev [mailto:hackrf-dev-bounces@greatscottgadgets.com] On Behalf
> Of C Crane
> Sent: Wednesday, September 23, 2015 1:58 PM
> To: Chuck McManis
> Cc: hackrf-dev@greatscottgadgets.com; Dana Shtun
> Subject: Re: [Hackrf-dev] HackRF DX 100Km on 1296.1
>
> Perhaps so. It just surprised me that there wasn't more overall interest. I
> thought there would be more people playing with different modes and what
> not. I guess I incorrectly assumed most of those with an interest in RF
> would also probably be licensed.
>
> On Wed, Sep 23, 2015 at 3:55 PM, Chuck McManis <chuck.mcmanis@gmail.com>
> wrote:
> On Wed, Sep 23, 2015 at 2:39 PM, C Crane <ccrane148@gmail.com> wrote:
>> Unfortunately, nobody seems too interesting in transmitting.
>
> I think that is unfair. Perhaps it is more accurate that the Majority
> of HackRF owners are not licensed to transmit, and so they don't.
> Because there is tremendous value and fun to be had just on the
> receiving side.
>
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>
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Scott Davis]

That's a good point.  We hams are so used to thinking in narrow-bandwidth terms 
(one of our digital modes requires a mere 9-Hz b/w) that we can overlook the 
need for a wide window.

-Scott K5TA

Sent from my iPad

> On Sep 24, 2015, at 7:33 AM, Dominic Spill  wrote:
> 
> I think that there are a lot of users transmitting with HackRF, but
> even for RX only there are a number of factors that go in to choosing
> hardware which may have lead to picking HackRF.  The main ones that I
> can think of are frequency range and bandwidth, but there are plenty
> more.
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Rich Sanders]

I'm a ham and just recently moved so my equipment isn't setup again (and I
probably wont be able to use my old antenna.)  In conjunction, my Linux box
crashed and I haven't had the time to reload everything.  To avoid the
issues about the transmit and receive, I use two different HackRFs.  My
transmit was hooked to a low power home brew amplifier, but could easily be
connected to a nice large amp.  Although I had to buy two HackRFs, I am
easily able to perform full duplex operations using two half duplex
HackRFs.  I also don't have to worry about changing modes in the HackRF.
My software was setup initially using GNURadio, then I modified the python
file to suit my needs.

Also, there is a ham mode called QRP, which is based along the idea of how
far can you communicate with low power.  There is no complete agreement on
what constitutes QRP power levels, the two most common accepted power
levels for QRP are less than 5 watts and less than 10 watts.  The HackRF
excels in this because it is already very low power and building your own
home brew amp is relatively easy.

I would gladly share these files, but like I said, my Linux box crapped the
bed and I haven't had time to reload it.

As far as unlicensed bands, the FCC website (for those of us in the USA) is
a pain to navigate and their band plans seem to be outdated.

Dummy loads are relatively cheap on Ebay and you can find plenty of sites
for home brew dummy loads.  The HackRF is low power, so you could get a
away with a much lighter dummy load.

- Rich

On Thu, Sep 24, 2015 at 7:33 AM, Dominic Spill  wrote:

> On 24 September 2015 at 00:20, Scott Davis  wrote:
> >
> > It’s odd that people interested in RX-only would spend the extra money
> > instead of getting an RTL or FCD or AirSpy or SDRPlay or….
>
> I think that there are a lot of users transmitting with HackRF, but
> even for RX only there are a number of factors that go in to choosing
> hardware which may have lead to picking HackRF.  The main ones that I
> can think of are frequency range and bandwidth, but there are plenty
> more.
>
> > On Sep 23, 2015, at 4:59 PM, Toth, Gregory S 
> > wrote:
> >
> > I assume that even without a license, it is ok to use a 50 ohm coax
> cable to
> > connect the Hack RF antenna jack directly to the input of an appropriate
> > receiver? Probably could use an inline attenuator just in case.
> >
> > From: HackRF-dev [mailto:hackrf-dev-boun...@greatscottgadgets.com] On
> Behalf
> > Of C Crane
> > Sent: Wednesday, September 23, 2015 1:58 PM
> > To: Chuck McManis
> > Cc: hackrf-dev@greatscottgadgets.com; Dana Shtun
> > Subject: Re: [Hackrf-dev] HackRF DX 100Km on 1296.1
> >
> > Perhaps so. It just surprised me that there wasn't more overall
> interest. I
> > thought there would be more people playing with different modes and what
> > not. I guess I incorrectly assumed most of those with an interest in RF
> > would also probably be licensed.
> >
> > On Wed, Sep 23, 2015 at 3:55 PM, Chuck McManis 
> > wrote:
> > On Wed, Sep 23, 2015 at 2:39 PM, C Crane  wrote:
> >> Unfortunately, nobody seems too interesting in transmitting.
> >
> > I think that is unfair. Perhaps it is more accurate that the Majority
> > of HackRF owners are not licensed to transmit, and so they don't.
> > Because there is tremendous value and fun to be had just on the
> > receiving side.
> >
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> > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
> >
> >
> >
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Dominic Spill]

On 24 September 2015 at 00:20, Scott Davis  wrote:
>
> It’s odd that people interested in RX-only would spend the extra money
> instead of getting an RTL or FCD or AirSpy or SDRPlay or….

I think that there are a lot of users transmitting with HackRF, but
even for RX only there are a number of factors that go in to choosing
hardware which may have lead to picking HackRF.  The main ones that I
can think of are frequency range and bandwidth, but there are plenty
more.

> On Sep 23, 2015, at 4:59 PM, Toth, Gregory S 
> wrote:
>
> I assume that even without a license, it is ok to use a 50 ohm coax cable to
> connect the Hack RF antenna jack directly to the input of an appropriate
> receiver? Probably could use an inline attenuator just in case.
>
> From: HackRF-dev [mailto:hackrf-dev-boun...@greatscottgadgets.com] On Behalf
> Of C Crane
> Sent: Wednesday, September 23, 2015 1:58 PM
> To: Chuck McManis
> Cc: hackrf-dev@greatscottgadgets.com; Dana Shtun
> Subject: Re: [Hackrf-dev] HackRF DX 100Km on 1296.1
>
> Perhaps so. It just surprised me that there wasn't more overall interest. I
> thought there would be more people playing with different modes and what
> not. I guess I incorrectly assumed most of those with an interest in RF
> would also probably be licensed.
>
> On Wed, Sep 23, 2015 at 3:55 PM, Chuck McManis 
> wrote:
> On Wed, Sep 23, 2015 at 2:39 PM, C Crane  wrote:
>> Unfortunately, nobody seems too interesting in transmitting.
>
> I think that is unfair. Perhaps it is more accurate that the Majority
> of HackRF owners are not licensed to transmit, and so they don't.
> Because there is tremendous value and fun to be had just on the
> receiving side.
>
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>
>
>
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Kevin Reid]

On Sep 23, 2015, at 13:39, C Crane  wrote:

> Unfortunately, nobody seems too interesting in transmitting.

I'm interested in transmitting! But this needs to be fixed:

https://github.com/mossmann/hackrf/issues/195

-- 
Kevin Reid  

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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Scott Davis]

Yes, but to avoid possible RX damage, you can just use a dummy load on the 
HackRF.

It’s odd that people interested in RX-only would spend the extra money instead 
of getting an RTL or FCD or AirSpy or SDRPlay or….

-Scott

On Sep 23, 2015, at 4:59 PM, Toth, Gregory S  wrote:

> I assume that even without a license, it is ok to use a 50 ohm coax cable to 
> connect the Hack RF antenna jack directly to the input of an appropriate 
> receiver? Probably could use an inline attenuator just in case.
>  
> From: HackRF-dev [mailto:hackrf-dev-boun...@greatscottgadgets.com] On Behalf 
> Of C Crane
> Sent: Wednesday, September 23, 2015 1:58 PM
> To: Chuck McManis
> Cc: hackrf-dev@greatscottgadgets.com; Dana Shtun
> Subject: Re: [Hackrf-dev] HackRF DX 100Km on 1296.1
>  
> Perhaps so. It just surprised me that there wasn't more overall interest. I 
> thought there would be more people playing with different modes and what not. 
> I guess I incorrectly assumed most of those with an interest in RF would also 
> probably be licensed. 
>  
> On Wed, Sep 23, 2015 at 3:55 PM, Chuck McManis  
> wrote:
> On Wed, Sep 23, 2015 at 2:39 PM, C Crane  wrote:
> > Unfortunately, nobody seems too interesting in transmitting.
> 
> I think that is unfair. Perhaps it is more accurate that the Majority
> of HackRF owners are not licensed to transmit, and so they don't.
> Because there is tremendous value and fun to be had just on the
> receiving side.
>  
> ___
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> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev

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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Toth, Gregory S]

I assume that even without a license, it is ok to use a 50 ohm coax cable to 
connect the Hack RF antenna jack directly to the input of an appropriate 
receiver? Probably could use an inline attenuator just in case.

From: HackRF-dev [mailto:hackrf-dev-boun...@greatscottgadgets.com] On Behalf Of 
C Crane
Sent: Wednesday, September 23, 2015 1:58 PM
To: Chuck McManis
Cc: hackrf-dev@greatscottgadgets.com; Dana Shtun
Subject: Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

Perhaps so. It just surprised me that there wasn't more overall interest. I 
thought there would be more people playing with different modes and what not. I 
guess I incorrectly assumed most of those with an interest in RF would also 
probably be licensed.

On Wed, Sep 23, 2015 at 3:55 PM, Chuck McManis 
mailto:chuck.mcma...@gmail.com>> wrote:
On Wed, Sep 23, 2015 at 2:39 PM, C Crane 
mailto:ccrane...@gmail.com>> wrote:
> Unfortunately, nobody seems too interesting in transmitting.

I think that is unfair. Perhaps it is more accurate that the Majority
of HackRF owners are not licensed to transmit, and so they don't.
Because there is tremendous value and fun to be had just on the
receiving side.

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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Scott Davis]

Did you try my NBFM TX?I’ll let Dana send you the CW beacon.Here’s a simple SSB TX at 144.3 MHz. You can set the RF freq as you wish.73, Scott K5TA 

K5TA-SSB-TX-001.grc
Description: Binary data
On Sep 23, 2015, at 4:16 PM, R. Niles Vaught  wrote:I would love to see your GRC flow graphs for TX.  I have successfully RX 220 , 440 and 2 M, but no TX yet.NilesK4RNV   On Wednesday, September 23, 2015 5:43 PM, Tom  wrote: Well done, I have done a little on 2m in fm on a diamond x7000.
On 24 Sep 2015 6:37 am, Dana Shtun  wrote:


Hi AllLast night fired up the HackRF again into my 43 element loop yagi @ 60 feet and was copiedwith a very good signal strength at a distance of 100 Km (60 Miles) on 1296.1 MHz using CW (morse code)and running the Hack as a propagation beacon (repeating message).Power output appears to be normal, but I am not sure how the IF and RF power controls work exactly .With the right software front end this little box would be a boon to the VHF UHF amateur radiocommunity for receive and transmit on our VHF UHF and Microwave bands.I wonder what it would take to interface it to something like PowerSDR ?  RegardsDana VE3DS in Toronto 		 	   		  
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[R. Niles Vaught]

I would love to see your GRC flow graphs for TX.  I have successfully RX 220 , 
440 and 2 M, but no TX yet.
NilesK4RNV 


 On Wednesday, September 23, 2015 5:43 PM, Tom  wrote:
   

 Well done, I have done a little on 2m in fm on a diamond x7000.On 24 Sep 2015 
6:37 am, Dana Shtun  wrote:

Hi All
Last night fired up the HackRF again into my 43 element loop yagi @ 60 feet and 
was copiedwith a very good signal strength at a distance of 100 Km (60 Miles) 
on 1296.1 MHz using CW (morse code)and running the Hack as a propagation beacon 
(repeating message).Power output appears to be normal, but I am not sure how 
the IF and RF power controls work exactly .
With the right software front end this little box would be a boon to the VHF 
UHF amateur radiocommunity for receive and transmit on our VHF UHF and 
Microwave bands.
I wonder what it would take to interface it to something like PowerSDR ?  
RegardsDana VE3DS in Toronto 

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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Tom]

Well done, I have done a little on 2m in fm on a diamond x7000.
On 24 Sep 2015 6:37 am, Dana Shtun  wrote:


Hi AllLast night fired up the HackRF again into my 43 element loop yagi @ 60 feet and was copiedwith a very good signal strength at a distance of 100 Km (60 Miles) on 1296.1 MHz using CW (morse code)and running the Hack as a propagation beacon (repeating message).Power output appears to be normal, but I am not sure how the IF and RF power controls work exactly .With the right software front end this little box would be a boon to the VHF UHF amateur radiocommunity for receive and transmit on our VHF UHF and Microwave bands.I wonder what it would take to interface it to something like PowerSDR ?  RegardsDana VE3DS in Toronto 		 	   		  
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Scanner Luce]

> On Sep 23, 2015, at 13:57, C Crane  wrote:
> 
> Perhaps so. It just surprised me that there wasn't more overall interest. I 
> thought there would be more people playing with different modes and what not. 
> I guess I incorrectly assumed most of those with an interest in RF would also 
> probably be licensed.
> 


One of the best things about the HackRF is that it puts a nice SDR in the hands 
of those who want to fiddle with a SDR without having to overcome the barrier 
of getting licensed. Makes a good gateway drug, though.

--Scanner





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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[C Crane]

Perhaps so. It just surprised me that there wasn't more overall interest. I
thought there would be more people playing with different modes and what
not. I guess I incorrectly assumed most of those with an interest in RF
would also probably be licensed.

On Wed, Sep 23, 2015 at 3:55 PM, Chuck McManis 
wrote:

> On Wed, Sep 23, 2015 at 2:39 PM, C Crane  wrote:
> > Unfortunately, nobody seems too interesting in transmitting.
>
> I think that is unfair. Perhaps it is more accurate that the Majority
> of HackRF owners are not licensed to transmit, and so they don't.
> Because there is tremendous value and fun to be had just on the
> receiving side.
>
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[Chuck McManis]

On Wed, Sep 23, 2015 at 2:39 PM, C Crane  wrote:
> Unfortunately, nobody seems too interesting in transmitting.

I think that is unfair. Perhaps it is more accurate that the Majority
of HackRF owners are not licensed to transmit, and so they don't.
Because there is tremendous value and fun to be had just on the
receiving side.
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Re: [Hackrf-dev] HackRF DX 100Km on 1296.1

[C Crane]

Unfortunately, nobody seems too interesting in transmitting.

On Wed, Sep 23, 2015 at 3:32 PM, Dana Shtun  wrote:

> Hi All
>
> Last night fired up the HackRF again into my 43 element loop yagi @ 60
> feet and was copied
> with a very good signal strength at a distance of 100 Km (60 Miles) on
> 1296.1 MHz using CW (morse code)
> and running the Hack as a propagation beacon (repeating message).
> Power output appears to be normal, but I am not sure how the
> IF and RF power controls work exactly .
>
> With the right software front end this little box would be a boon to the
> VHF UHF amateur radio
> community for receive and transmit on our VHF UHF and Microwave bands.
>
> I wonder what it would take to interface it to something like PowerSDR ?
>
> Regards
> Dana VE3DS in Toronto
>
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[Hackrf-dev] HackRF DX 100Km on 1296.1

[Dana Shtun]

Hi All
Last night fired up the HackRF again into my 43 element loop yagi @ 60 feet and 
was copiedwith a very good signal strength at a distance of 100 Km (60 Miles) 
on 1296.1 MHz using CW (morse code)and running the Hack as a propagation beacon 
(repeating message).Power output appears to be normal, but I am not sure how 
the IF and RF power controls work exactly .
With the right software front end this little box would be a boon to the VHF 
UHF amateur radiocommunity for receive and transmit on our VHF UHF and 
Microwave bands.
I wonder what it would take to interface it to something like PowerSDR ?  
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