开云体育

On Monday, November 4, 2019, 12:02:37 AM UTC, Bob Macklin <macklinbob@...> wrote:







BTW:

There is no FCC rule about using DSB/SC. It was quite common in the early
days of SSB.

It was the suppression of the carrier that was desired. It has the same
bandwidth as a normal AM signal.

Except on contest days there is no problem with the extra bandwidth.

and note that analog TV was VSB. One sideband with carrier.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message -----
From: "JT Croteau" <jt.tobit@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 3:42 PM
Subject: Re: [qrp-tech] QRPGuys DSB Digital Transceiver

LOL at Randy's post.

QRPGuys aren't the only ones out there with a DSB FT8 kit.? People need to
get over all of this.? It isn't meant to be a serious radio, it could be
very fun to play with like others tinkering around with DSB voice
circuits.

Mine is on the bench and I will use it.

On Sun, Nov 3, 2019, 17:31 jim via Groups.Io <ab7vf@...>
wrote:

? Sad ... Still when I just looked, this is being sold to be ran under
'computer-control' by the "wsjt-x" program ... Not exactly rag-chew modes
....purchased a similar device (from hans summers) called "QRSS-WSPR" to
do
some antenna propagation messing around ...No received it yet, but
...Don't
bag it, use it for what it was intended ..

disclaimer:? I have NOT been following this thread with any active
interest ...Lotsa experts out there tho (as usual)

Jim

? ? On Sunday, November 3, 2019, 10:47:18 PM UTC, Randy.AB9GO <
randy.ab9go@...> wrote:

? With all the controversy surrounding this kit I am sorry I even
purchased
it. It's sitting here waiting to be assembled. I suppose I'll throw the
PCB
boards away and keep the parts for future projects. With so many problems
surrounding dsb (other than simplicity) I cannot understand why the
qrpguys
put this kit out.? In retrospect I would have paid extra just to have a
proper SSB signal after reading all the comments in this thread.

Randy AB9GO