| |
CX2SA > SATDIG 12.11.13 18:00l 705 Lines 25027 Bytes #999 (0) @ WW
BID : AMSATBB8384
Read: GUEST
Subj: AMSAT-BB-digest V8 384
Path: IZ3LSV<IV3SCP<IW0QNL<JH4XSY<JE7YGF<7M3TJZ<CX2SA
Sent: 131112/1552Z @:CX2SA.SAL.URY.SA #:482 [Salto] FBB7.00e $:AMSATBB8384
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. FUNcube-1 Project Update (Graham Shirville)
2. Re: FUNcube-1 Interview on BBC Radio (Bryce Salmi)
3. ISS and the TS 2000 (Rich/wa4bue)
4. Re: ISS and the TS 2000 (Jeff Moore)
5. Re: ISS and the TS 2000 (John Fickes)
6. Re: D STAR (George Henry)
7. Re: D STAR (Tony Langdon)
8. Re: D STAR (Tony Langdon)
9. Re: D STAR (Tony Langdon)
10. FreeDV (was: D STAR) (Tony Langdon)
11. Re: D STAR - try freeDV instead (Ross Whenmouth)
12. Re: D STAR (Gordon JC Pearce)
13. Re: ISS and the TS 2000 (Rich/wa4bue)
14. Re: D STAR (aflowers@xxxxxxxxxxx.xxxx
15. Re: D STAR (lucleblanc6@xxxxxxxxx.xxx
----------------------------------------------------------------------
Message: 1
Date: Mon, 11 Nov 2013 20:40:26 -0000
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FUNcube-1 Project Update
Message-ID: <73EA1C74415545FC9BBC4C3C713252D6@xxxxxxx.xxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi All,
Our software team is working feverishly to complete the FUNcube Dashboard
software that we will be using to decode and display the telemetry that will
be transmitted from the spacecraft on 145.935 MHz.
Whilst they finish their work here are some provisional pre-launch keps. We
may well receive an updated set nearer to the day of launch but we expect
that these should be good enough for the first few hours/days after launch.
Satellite: FUNCUBE-1
Catalog number: 99991
Epoch time: 13325.309563080
Element set: 1
Inclination: 97.7956 deg
RA of node: 38.2570 deg
Eccentricity: 0.0059925
Arg of perigee: 198.5190 deg
Mean anomaly: 336.5388 deg
Mean motion: 14.77841394 rev/day
Decay rate: 0.00000106
Epoch rev: 1
The particular method of deployment used by this Dnepr launch vehicle means
that the dispersion of all the objects may be somewhat more rapid than we
are commonly used to, so this may help the experts determine which object is
which.
FUNcube-1 will initially be transmitting only about 30 mW of output power,
this is its "Safe Mode", so a steerable yagi will greatly help reception.
When the spacecraft is eventually transmitting data in its normal
"Educational Mode" the signal is expected to be about 10dB louder.
To stay up-to-date with what has happening with the FUNcube project and, in
particular, with the FUNcube-1 spacecraft please visit www.funcube.org.uk
You can register for automatic email notifications of all the updates by
clicking on the "follow this blog" tab towards the bottom right hand corner
of the front page.
best 73
Graham
G3VZV
------------------------------
Message: 2
Date: Mon, 11 Nov 2013 13:42:28 -0800
From: Bryce Salmi <bstguitarist@xxxxx.xxx>
To: M5AKA <m5aka@xxxxx.xx.xx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: FUNcube-1 Interview on BBC Radio
Message-ID:
<CAN5j0sp9k8Yw+GLEwL4zck_0D32M3DnNz7Fk1H+EcACeDtka8g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
FYI the interview starts around 2:19:30 into the show
On Mon, Nov 11, 2013 at 11:45 AM, M5AKA <m5aka@xxxxx.xx.xx> wrote:
> I believe the BBC recording should be available worldwide, let me know if
> it isn't.
>
>
> See http://amsat-uk.org/2013/11/11/funcube-1-on-bbc-radio/
>
>
> ----
> 73 Trevor
> M5AKA
> AMSAT-UK website http://amsat-uk.org/
> Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396
> Twitter https://twitter.com/AMSAT_UK
> ----
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 3
Date: Mon, 11 Nov 2013 21:29:42 -0500
From: "Rich/wa4bue" <richard.siff@xxxxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Cc: Ed Williams <sunset392@xxx.xxx>
Subject: [amsat-bb] ISS and the TS 2000
Message-ID: <6D09111EEDC24003B520BD2BF190B5CA@xxxxxxxxx>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
Hi all,
The K4AMG CLUB is using the TS 2000 and SATPC32.
In SAT mode the program or the transceiver gives an uplink and down link
frequency. The ISS is simplex. Is it possible to work a simplex mode to
the ISS with this configuration?
God Bless
R
W4BUE
------------------------------
Message: 4
Date: Mon, 11 Nov 2013 19:22:08 -0800
From: Jeff Moore <tnetcenter@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS and the TS 2000
Message-ID:
<CALx_moRsSmZts_gptUeviE+o182SGKyREV+BpXHHsB4kO0Ev3g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
ISS voice contacts are NOT simplex. They are just not cross-band. You
have a different uplink and downlink frequency but within the same band
similar to a conventional repeater.
You should be able to set both the software and the radio to the correct
frequencies.
7 3
Jeff Moore -- KE7ACY
On Mon, Nov 11, 2013 at 6:29 PM, Rich/wa4bue <richard.siff@xxxxxxx.xxx>wrote:
> Hi all,
>
> The K4AMG CLUB is using the TS 2000 and SATPC32.
>
> In SAT mode the program or the transceiver gives an uplink and down link
> frequency. The ISS is simplex. Is it possible to work a simplex mode to
> the ISS with this configuration?
>
> God Bless
>
> R
>
> W4BUE
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 5
Date: Mon, 11 Nov 2013 21:46:15 -0600
From: John Fickes <kc0bmf@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS and the TS 2000
Message-ID:
<CAG-+cOZvuDDDJxFYGMAQqe8uN_-uQ0Z_45TF5kD2WJWpNmpOwQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Rich
SATPC32ISS should fix you up. Look at SATPC32 in your programs folder, it
should be there.
I'm not sure about the TS 2000, I use Icom 910 but that shouldn't matter.
With SATPC32ISS it
should set your radio int split mode with the 2 frequencies that you need
for voice. However if
you are trying for the 145.825 simplex if you have it input in the Doppler
Sqf in Auxiliary Files
under the question mark on the tool bar of Satpc32 it should show up in the
CAT, then click
on the frequency. Clear as mud isn't it ? I may not of described it very
well but if you look in
these areas it may help you out. If you need more help just ask
73 John KC0BMF
On Mon, Nov 11, 2013 at 9:22 PM, Jeff Moore <tnetcenter@xxxxx.xxx> wrote:
> ISS voice contacts are NOT simplex. They are just not cross-band. You
> have a different uplink and downlink frequency but within the same band
> similar to a conventional repeater.
>
> You should be able to set both the software and the radio to the correct
> frequencies.
>
> 7 3
>
> Jeff Moore -- KE7ACY
>
>
> On Mon, Nov 11, 2013 at 6:29 PM, Rich/wa4bue <richard.siff@xxxxxxx.xxx
> >wrote:
>
> > Hi all,
> >
> > The K4AMG CLUB is using the TS 2000 and SATPC32.
> >
> > In SAT mode the program or the transceiver gives an uplink and down link
> > frequency. The ISS is simplex. Is it possible to work a simplex mode to
> > the ISS with this configuration?
> >
> > God Bless
> >
> > R
> >
> > W4BUE
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
> >
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 6
Date: Mon, 11 Nov 2013 23:10:47 -0600
From: "George Henry" <ka3hsw@xxx.xxx>
To: "Paul Stoetzer" <n8hm@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: D STAR
Message-ID: <C48395DF8FA742D3AB7ACE48F1768635@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
FreeDV would probably work on the transponder birds if your doppler update
was fast enough... it has built-in AFC. Your only chance to try it on an FM
bird would probably be in the middle of the night...
George, KA3HSW
----- Original Message -----
From: "Paul Stoetzer" <n8hm@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Monday, November 11, 2013 7:17 AM
Subject: [amsat-bb] Re: D STAR
> An interesting idea would be trying a FreeDV QSO via satellite. I've made
> a
> few QSOs with it on HF and it's an interesting mode.
>
> Obviously it's full duty-cycle, so any attempts should be limited to just
> a
> few tests, but I'm sure it would work.
>
> 73,
>
> Paul, N8HM
>
>
------------------------------
Message: 7
Date: Tue, 12 Nov 2013 17:06:06 +1100
From: Tony Langdon <vk3jed@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: D STAR
Message-ID: <5281C54E.7040806@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 11/11/13 6:44 PM, Gordon JC Pearce wrote:
> On Mon, Nov 11, 2013 at 12:14:26AM -0600, George Henry wrote:
>> There are very good reasons why no other amateur radio manufacturer
>> will touch it.
>> George, KA3HSW
>>
> What, apart from encryption being illegal on the amateur bands?
>
> Without a radical redesign and a new codec, DStar is just not suitable for
amateur use. Proprietary software runs counter to the whole principle of
amateur radio, and in this case the encrypted proprietary codec is quite
possibly not legal for amateur use.
That argument is a furphy. AMBE is readily available in a $20 chip if
the authorities want to listen in, it's not encrytion (formally defined
as encoding to obscure the meaning of a transmission), it's encoding to
minimise the audio data transmitted for intelligible speech.
D-STAR itself is open specification, and a significant proportion (a
majority now?) of D-STAR gateways run open source software (such as the
G4KLX pcrepeatercontroller/ircddbgateway software) on both Icom repeater
hardware and homebrew setups.
Sure, an open source vocoder would have been nice, but one with suitable
performance and available in a form that could be incorporated into
radios didn't exist when D-STAR was developed. Had D-STAR been developed
today, Codec2 would be a real option (though I'm not yet aware of an
implementation suitable for a mobile or HT).
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
------------------------------
Message: 8
Date: Tue, 12 Nov 2013 17:09:56 +1100
From: Tony Langdon <vk3jed@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: D STAR
Message-ID: <5281C634.4080500@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 12/11/13 12:17 AM, Paul Stoetzer wrote:
> An interesting idea would be trying a FreeDV QSO via satellite. I've made a
> few QSOs with it on HF and it's an interesting mode.
>
> Obviously it's full duty-cycle, so any attempts should be limited to just a
> few tests, but I'm sure it would work.
I suspect you'd need computer Doppler correction with the FDMDV modem.
The high PAPR would limit the stress on a linear transponder. The (yet
to be finalised) VHF GMSK variant might be easier to handle from a
Doppler point of view, though at a higher average power (since it's
constant envelope like FM).
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
------------------------------
Message: 9
Date: Tue, 12 Nov 2013 17:14:27 +1100
From: Tony Langdon <vk3jed@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: D STAR
Message-ID: <5281C743.40506@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 12/11/13 3:25 AM, Stefan Wagener wrote:
> Yes,
>
> It could work as long as software for doppler control (eg SatPc32) can
> invoke the smaller frequency changes which it actually can (see my other
> note on the IC-9100). So you would use the built-in DSTAR module for uplink
> or downlink and the 9600 packet mode with a GMSK node adapter for the other
> in a full duple radio like the IC-9100. Or you use two radios in 9600
> packet mode with 2 node adapters for uplink and downlink as long as they
> are supported via doppler software and small frequency steps.
I think setups using GMSK modems or a DV-RPTR board and an all mode
radio with Doppler correction will have the most success on satellite
D-STAR, because computer Doppler compensation and the small tuning step
size will keep everything within tolerance. Time to pull my DV-RPTR
board out and hook it up to the IC-7000. :)
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
------------------------------
Message: 10
Date: Tue, 12 Nov 2013 17:19:38 +1100
From: Tony Langdon <vk3jed@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] FreeDV (was: D STAR)
Message-ID: <5281C87A.2050904@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 12/11/13 4:10 PM, George Henry wrote:
> FreeDV would probably work on the transponder birds if your doppler
> update was fast enough... it has built-in AFC. Your only chance to
> try it on an FM bird would probably be in the middle of the night...
I'd be looking at using FreeDV with the linear birds in its current
form, and definitely with Doppler correction. The PAPR is fairly high,
so the overall transponder power drain would be no more than for a SSB
transmission of similar length. Uplink power control might need to be a
bit more accurate, because the satellite's AGC may not be able to track
the brief power peaks. Likely to be a case where "less is more" when it
comes to uplink power.
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
------------------------------
Message: 11
Date: Tue, 12 Nov 2013 20:01:39 +1300
From: Ross Whenmouth <ross@xxxxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: D STAR - try freeDV instead
Message-ID: <5281D253.6080102@xxxxxxx.xx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi,
Rather than trying to get a D-Star radio to QSY in less than 5 kHz
steps, you could try freeDV with your existing SSB transceivers?
D-Star occupies 6.25 kHz bandwidth on the transponder, but freeDV only
needs 1.25 kHz (half of a normal SSB voice emission).
You can get freeDV (experimental) software here:
http://freedv.org/tiki-index.php
Unlike the early days of SSB (which has been the subject of various
patents) AMBE is unlikely to ever be free, even after the patents expire
as DVSI Inc. treats AMBE as a TRADE SECRET, and the only way to get the
codec is to buy the chip (a locked TI DSP pre-loaded with AMBE). DVSI's
patents cover some of the technology used in AMBE, but these patents do
not explain enough about the AMBE process or protocol for someone to
write their own AMBE-compatible codec.
Once the patents expire, someone with the right resources might be able
to hardware reverse engineer the firmware in the AMBE chip (very
difficult!) and write a specification of the AMBE process/protocol,
which someone else who has never seen inside the AMBE firmware can then
use to write a "clean room" AMBE compatible codec. Depending on the laws
in force at the time, it might also be illegal to de-bond the AMBE chip
and reverse engineer the codec therein. However, all this is probably
requires far more effort than it is worth - better to spend time, energy
and money on developing an alternate codec that is truly "open".
FreeDV uses an OFDM modem (16 QPSK carriers + 1 BPSK pilot), designed to
have strong resistance to the multi-path propagation typical on the HF
bands that it was originally intended to be used on. However, this means
that is has a ~ 12dB peak to average power ratio, which imposes
linearity requirements on the transmit signal path. For satellite
operation, where path loss is a much greater concern than multi-path,
the use of a serial tone modem (single carrier QPSK, BPSK, GMSK, etc)
for freeDV would reduce the linearity requirements of the transmit
signal path making it easier for an otherwise marginal ground station to
produce enough EIRP to work the bird.
73's ZL2WRW
Ross Whenmouth
------------------------------
Message: 12
Date: Tue, 12 Nov 2013 09:54:43 +0000
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: D STAR
Message-ID: <20131112095443.GA18591@xxxx.xxx>
Content-Type: text/plain; charset=us-ascii
On Tue, Nov 12, 2013 at 05:09:56PM +1100, Tony Langdon wrote:
> On 12/11/13 12:17 AM, Paul Stoetzer wrote:
> >An interesting idea would be trying a FreeDV QSO via satellite. I've made a
> >few QSOs with it on HF and it's an interesting mode.
> >
> >Obviously it's full duty-cycle, so any attempts should be limited to just a
> >few tests, but I'm sure it would work.
> I suspect you'd need computer Doppler correction with the FDMDV
> modem. The high PAPR would limit the stress on a linear
> transponder. The (yet to be finalised) VHF GMSK variant might be
> easier to handle from a Doppler point of view, though at a higher
> average power (since it's constant envelope like FM).
You could simulate doppler by injecting a suitable voltage ramp into your
RIT control, making your HF rig "drift" in a known way.
--
Gordonjcp MM0YEQ
------------------------------
Message: 13
Date: Tue, 12 Nov 2013 06:04:44 -0500
From: "Rich/wa4bue" <richard.siff@xxxxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS and the TS 2000
Message-ID: <C562AAF0F34D439EBA83D1C187BA6D53@xxxxxxxxx>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
Thank you everyone.
God Bless
Rich
W4BUE
------------------------------
Message: 14
Date: Tue, 12 Nov 2013 06:16:38 -0800 (PST)
From: "aflowers@xxxxxxxxxxx.xxxx <aflowers@xxxxxxxxxxx.xxx>
To: n0jy <n0jy@xxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: D STAR
Message-ID:
<1384265798.45074.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi Jerry,
> I use D-STAR Digital Data on 1.2 GHz for my Winlink RMS Packet CMS
connection, 24/7.
> The Pactor 3 mode that I use for Winlink HF forwarding is proprietary.?
But nobody else has come up with anything near as good (yet).? So a lot of
hams use it because it does the job well.
?
I think that?was Rob's point.? There is no opportunity to learn from it let
alone improve upon it because the protocol is at the very least a guarded
trade secret if not patented (FWIW, the case of protocols used for HF email
mostly outside ham bands I would think there would be very good business
reasons for the manufacturer to keep it so).? It closes off the doors of
learning from it let alone finding ways to improve upon it, and relegates us
to nothing more than a consumers of a product.? One might argue that
ingraining it in a permanent network, whether it be HF email or a shared
satellite channel, does more of the same.? Having a consumer base that is
happy with what they have is pretty good discouragement for incremental
innovation....after all, all these consumers have just spent all this money
on their radios and modems, why would they want to change or even support
it??? In the end you may find that "just because it works" sounds specious
to people who believe that Amateur Radio Service has had?much more to offer
than simply transferring information from point A to point B with "maximum
efficiency" or whatever.? There's a philosophical pragmatism behind this
that?some people see as having the?potential?to trump?the balance
of?purposes?that define the Amateur Radio Service.? I think that's why Rob
pointed to the enumerated purposes in CFR part 97.1. (For those outside the
US you probably have a similar wording in your countries' laws since this
all pretty much?summarizes the ITU definition, so this isn't just a "US
thing").
(As a side note for the spectators, if you have strong feelings about this
you may want think about the long-term consequences the ARRL's upcoming NPRM
as it relates to HF digital communication).
Back to satellites.? I have no idea if D star has a issue with Doppler shift
on radios that tune in 5Khz increments of whatever, but it's been suggested
that it could be handled with finer tuning, narrower channels, or some kind
of AFC.? So, you ask your box manufacturer to allow finer tuning (or the
chip manufacturer to enable some kind of AFC).? They do the market research
and decide?that you don't represent a big enough market to justify the
redesign.??If as one commenter has has is true, then you the consumer have
no (legal) recourse. Even if you wanted to do improve it your hands are tied.
?
The alternative of having the ability to change and adopt the code to suit
various constraints could certainly be handled in an open and possibly very
messy manner involving failed experiments but in which everyone has the
ability to learn something according to his or her ability if he or she
wishes to participate.? It sounds like there are people doing just that.
(It's the same reason I am on this reflector but don't talk much--I think
there are many more, but the list admin would know for sure).
Or you can just buy "what works"? (works for what?)?off the shelf, which is
certainly the hope of the commercial interests.??But something in my bones
(and maybe yours, too)?tells me that that kind of pragmatism might not be so
good in the long run.??It's our future, I guess, and I can't make that
decision for anyone, but to dismiss these concerns out of hand in the name
of "progress", as it often is,?seems rather foolish to me.? There's a big
picture here that everyone owes it to themselves to?take some time to ponder.
I'm glad this is being discussed.
?
Cheers,
?
Andy K0SM/2
------------------------------
Message: 15
Date: Mon, 11 Nov 2013 11:32:09 -0500
From: lucleblanc6@xxxxxxxxx.xx
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Re: D STAR
Message-ID: <52810689.23562.38932B@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; CHARSET=US-ASCII
On 11 Nov 2013 at 15:22, Gordon JC Pearce wrote:
> On Mon, Nov 11, 2013 at 08:46:24AM -0600, damon runion wrote:
> > Well back in the days of AM and when SSB came out it was the same
> > thinking then BUT what has happened to AM . Same thing with DSTAR it
> > is growing and will grow . Thats what makes ham radio so much fun,
> > there is something for everyone
> > 73,s Damon
>
> But the difference there is that *anyone* can make an SSB rig. Only one
manufacturer is allowed to make AMBE codecs, and they will only sell to a
handful of approved radio manufacturers.
>
> It is illegal to make your own DStar radio, without buying the AMBE codec
from DVSI. That sort of thing has no place in amateur radio.
>
> --
> Gordonjcp MM0YEQ
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
To help the non beleiver.. just read this:
http://www.eham.net/articles/30174
And yes telephone and satellite phone are available but if one choose to use
DSTAR it is relevant to discredit him? If you think something
has no place im amateur radio just don't use it and let those who wants to
use it enjoy one of the most reliable digital communication
protocol available. Yes some will say DMR, MotoTRBO are better it's just to
say competition is already present.
The cost question.
You can already interface a lot of recent HF transceiver to DSTAR for 700$
and much less if you are technicaly inclined.See below it's just
an example and i'm not connected to their business.
http://dstarradioclub-international.com/dv-adapters---for-more-information--ma
nual-links.html?success=1&ucfid=510239683496259871&text=Thank+
you.+Your+information+has+been+submitted
I don't know where this "I don't use it and as i think it's not Ham radio no
one should use it" trend come from but it's getting old...
I'm an avid DSTAR user just put my call sing in your URCALL and you will be
able to reach me all over the globe. If you don't like the
internet component you better to go back to the cave man, or you don't live
on my planet.
Just let folks live free...
Luc Leblanc VE2DWE
WAC BASIC CW PHONE SATELLITE
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 8, Issue 384
****************************************
Read previous mail | Read next mail
| |
