Actually, I'd also like to pick up on another point. To me, the use of
"J" in an emission designator makes sense only when the source driving
the SSB modulation stage is a raw signal source, not modulated in any form.
FreeDV is actually modulated onto a low frequency carrier in the audio
range. The SSB transmitter is nothing more than a fancy image rejecting
mixer, converting the signal up to its final transmission frequency.
I think of soundcard generated digital modes as having a very low first
IF in the transmit chain (and last IF in the Rx chain).
So, I'd drop the J2 and replace it with something else that better fits
the nature of FreeDV.
Back to the original topic, I can't comment on the specifics, but it
does seem to me that sticking to J3E (analog SSB) would be more
neighbourly of us when sharing with SSB users from other services.
On 15/12/22 5:22 pm, Rick, WA6III wrote:
>
> Actually it might in the strictest sense of the definition
>
> Just because some of the "Data" happens to be a digitized voice
> waveform, it's all still "Data"
>
> I know that some think the FCC (or other Self proclaimed Lawyers) may
> claim that digital voice is actually "voice"
>
> But has the FCC actually put this in writing?
>
> Now to be fair, The FCC did actually mandate the "voice" mode to be used
> on 60m as 2.8khz USB voice and they did it for a specific reason. (to be
> standardized with the other NON-amateur users for emergency/contingency
> use)
>
> Doesn't FreeDV , Orthogonal Frequency Division Multiplexed (OFDM),
> transmission actually include other data in addition to digitized voice
> making the actual designator 1K20J2W
>
> 1K20J2W--Bandwidth: 1.20 kHz
> Modulation Type: [J] *AM, single sideband, suppressed carrier*
> Modulation Nature: [2] *Digital, with modulation*
> Information Type: [W] *Multiple Formats of Data Transmitted*
>
>
> And I know this is not related to 60m per se', but the above emission
> designator should be acceptable in the non-phone bands in all the
> amateur bands (except maybe 60m because FCC already spelled out the
> allowed modes)
>
> And just because someone at ARRL gave an opinion that digital voice is
> "voice" doesn't necessarily make it so.
>
> Can someone point me to FCC written info that specifically indicates
> 1K20J2W as only able to be used in voice bands?
>
> And what exactly is the emission designator for 700D if it isn't 1K20J2W
> On Friday, December 9, 2022 at 10:51:35 AM UTC-8
glenn...@gmail.com wrote:
>
> Too many people do not understand what data is or simply digital.
> Just because voice is digitized does not make it DATA. Voice is
> voice, except for the labeling of the type of modulation it is.____
>
> __ __
>
> *From:*
digita...@googlegroups.com <
digita...@googlegroups.com> *On
> Behalf Of *Mooneer Salem
> *Sent:* Tuesday, December 6, 2022 17:39
> *To:*
digita...@googlegroups.com
> *Subject:* Re: [digitalvoice] 60m FreeDV frequency and interference____
>
> __ __
>
> Hi Seannon,____
>
> __ __
>
> The 300 baud limit has been interpreted as applying on a per-carrier
> basis (e.g. paragraph 2 of
>
https://docs.fcc.gov/public/attachments/DA-20-963A1.pdf). Since the
> various FreeDV modes use multiple carriers, this means that FreeDV
> wouldn't run afoul of that particular restriction. The symbol rate
> for each mode is listed on a spreadsheet in the codec GitHub
> repository
> (
https://github.com/drowe67/codec2/blob/master/doc/modem_codec_frame_design.ods).____
>
> __ __
> and FreeDV would be unlikely to qualify as such by that definition.____
>
> __ __
>
> Thanks,____
>
> __ __
>
> -Mooneer K6AQ____
>
> __ __
> wrote:____
>
> Moneer, in relation to Matt's question, in relation to just
> calling it "data" what would the symbol rate be? Would it be
> higher than the 300 set by the FCC currently? Also, I think the
> type of data is also specified for the 5 channels as well... On
> top of the only one station transmitting at a time, and only on
> the designated indicated frequencies, i.e. not just anywhere
> within the audio passband like is commonly done with FT8... ____
>
> __ __
>
> (3) Only a RTTY or data emission using a specified digital code
> listed in §97.309(a) of this part may be transmitted. The symbol
> rate must not exceed 300 bauds, or for frequency-shift keying,
> the frequency shift between mark and space must not exceed 1
> kHz.____
>
> __ __
>
> Seannon, AG0NY ____
>
> __ __
> wrote:____
>
> Hi Matt,____
>
> __ __
>
> IANAL but traditionally FreeDV and other digital voice modes
> have been considered "phone" in the US and not "data", hence
> my interpretation re: 60 meters. (Really, Part 97 should
> regulate the bands a lot differently than it does now, but
> that's probably a discussion best suited for elsewhere.) ____
>
> __ __
>
> Thanks,____
>
> __ __
>
> -Mooneer K6AQ____
>
> __ __
>
> On Mon, Dec 5, 2022 at 9:14 PM Matt Jones
> <
ma...@flyfast.net> wrote:____
>
> Ehhhhh... according to this... data is allowed in the US
> on 60m____
>
> __ __
>
>
https://transition.fcc.gov/oet/spectrum/table/fcctable.pdf
> page 134.____
>
> __ __
>
> US23 In the band 5330.5-5406.4 kHz (60 m band), the
> assigned frequencies 5332, 5348, 5358.5, 5373, and 5405
> kHz are allocated to the amateur service on a secondary
> basis. Amateur service use of the 60 m band frequencies
> is restricted to a maximum effective radiated power of
> 100 W PEP and to the following emission types and
> designators: phone (2K80J3E), data (2K80J2D), RTTY
> (60H0J2B), and CW (150HA1A). Amateur operators using the
> data and RTTY emissions must exercise care to limit the
> length of transmissions so as to avoid causing harmful
> interference to Federal stations. ____
>
> __ __
>
> Matt____
>
> __ __
>
> On Mon, Dec 5, 2022 at 3:13 PM Mooneer Salem
> <
moo...@gmail.com> wrote:____
>
> Hi all,____
>
> __ __
>
> As others have mentioned, definitely practice all
> the things we're supposed to be doing for non-FreeDV
> stuff when using FreeDV (ID when you're supposed to,
> not intentionally interfering with others already on
> frequency, etc.) I imagine as there's more use of
> FreeDV, there'll eventually be a consensus on where
> on 60 meters it should be used. ____
>
> __ __
>
> BTW FreeDV isn't allowed on 60 meters in the US
> (§97.307(f)(14)(i) limits "phone" on that band to
> emissions designator J3E, aka analog SSB voice).
> YMMV for other countries, of course.____
>
> __ __
>
> Thanks,____
>
> __ __
>
> -Mooneer K6AQ____
>
> __ __
> <
glenn...@gmail.com> wrote:____
>
> Just an outside opinion. 60M has channels in
> the US that apparently have been taken over by
> digital modes and voice is about useless on
> those. I have no issue with digital modes,
> Voice, CW, or other. However, too many
> operators are not LISTENING prior to sending
> anything. This includes CW use on those
> channels, sending right over top of
> conversations. If these were Govt Stations we
> would be quick to lose the privilege of the use
> of that amazing band. Nobody should have to do
> anything, if the channel is in use already, you
> move. Oh.. and while operating, ALSO LISTEN,
> you may be interfering with other stations that
> have either priority or conditions changed and
> now have propagation to your area. Nobody in
> Amateur Radio has any priority on any
> frequency. Lets not lose the 60M band.____
>
> Glenn WT3R____
>
> On Monday, December 5, 2022 at 2:41:25 PM UTC-5
>
gw8...@gmail.com wrote:____
>
> why should the freedv move why dont the
> oilivia op go up in frequency, as you say
> that part of the band as been used from the
> start.____
>
> On 05/12/2022 18:47:17, Brian Morrison
> <
b...@fenrir.org.uk> wrote:____
> Brian Morrison G8SEZ ____
> ____
>
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73 de Tony VK3JED/VK3IRL
http://vkradio.com