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Re: QRPGuys DSB Digital Transceiver

Bob Macklin
 

Jack,

I suspect it is people are just not trying because the bands don't have much
except on contest days.

I use DX Lab with DX Atlas to look at the CW/digital activity. There appears
to be more activity east of the Mississippi than west of it. And there is
more activity east of the Rockies than west of them.

Why??

And I am using GOOD receivers.

The main bands for me right now are 40M and 20M. But I would prefer 40M and
15M. I have a 40M dipole that also works OK on 15M.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"

----- Original Message -----
From: "Jack via Groups.Io" <jjpurdum@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 7:06 PM
Subject: Re: [qrp-tech] QRPGuys DSB Digital Transceiver


Bob:
It's very true that conditions right now suck compared to the 70's. I had
regular sked's for phone patch traffic between our military personnel
stationed on Guam and the Marshall Islands and their spouses left at home at
Offut AFB (SAC Headquarters). However, poor conditions does NOT mean bad ham
radio. Indeed, one of my club members worked 160 DX stations during the
recent CQ DX contest. It may take a little more effort today than 40 years
ago, but the bands still provide enjoyable QSO's if you want them.

Isn't it odd the bands are moribund at "normal" times but are actually
crowed on FD and other popular contests. Hmmm. I wonder...How much of this
"The-bands-are-horrible" crap is because we turn on the radio, tune around
for five minutes and, not hearing anything, shut down everything just so you
can go upstairs and rearrange your sock drawer. I wonder what would happen
if every one of us tuned around for five minutes and, not hearing anything,
called CQ for five minutes before giving up? I'll bet you'd make a contact
more often than not...especially if everyone else was doing the same thing.
I know the science and the sun's being pretty crappy about things at the
moment. Still, I wonder what would happen if...
Jack, W8TEE

On Sunday, November 3, 2019, 9:32:09 PM EST, Bob Macklin
<macklinbob@...> wrote:

Part of the problem with ham radio today is ready built radios are too
expensive for a lot of us.

70 years ago we could buy a surplus BC-453 (Q5'er) for $5 and build a
converter to put in front of it for another $10.

Not so today. And the kits like Heathkit are long gone.The Heathkit low
power transverters (HW-7, HW-8, HW-9) all go for several hundred bucks on
eBay. And they are just direct conversion receivers.

A good starting point is the NorCal40. It's single band but it's pretty
cheap. And PCBs have been available.

Now is not a good time for ham radio. We are at the low point of the solar
cycle. We may have just started Solar Cycle 25. I think partially because of
this the ham radio activity is at a low point.

If you don't have a GC receiver there are a lot available on eBay. I like
the Heathkits. I have mostly tube types but I do have a couple solid state
units.

They will let you listen to the activity on the bands.If you don't hear any
activity on one of these you won't hear any on your QRP kit.

It doesn't hurt to have a signal generator.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message -----
From: "chuck adams" <chuck.adams.k7qo@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 4:15 PM
Subject: Re: [qrp-tech] QRPGuys DSB Digital Transceiver


I second the notion. Build it, use it and see what it does.

I built the kit and put it on the air and worked almost 30 Qs with
it. I am not a fan of the mode after the fact. You just point
and click and get a simple exchange. For $40, you do get something
that does work.

You guys remember the pixie? Did you get it to work as well?

And, going back to the QRPGuys kit. I never received a follow up
email saying I was causing problems by being on the air.

I have, in the last five weeks pulled a Brian May, of Queen fame,
by doing over 4,000 lines of C code and two books with more in
the queue and gone back to doing physics. I have downsized the lab.
I spent 26 years doing QRP stuff and it's time for me to devote time to
doing physics seriously again. I've a bunch of papers to publish
that I have done over the past 20 years.

The EMRFD group has gone. It is time for this group to also come
to and end.

I do not want this group to turn into a bashing group. Too many people
have their own agenda.

This group is coming to its end of life. At the end of the year I will
disable all posting, but the material files and messages will remain
intact for the duration of the life of groups.io as long as we are not
charged for the use of the space. Greed seems to be kicking in on
the Internet and every one wants to make money.

Feel free to start a qrp group with another name and announce it here.
I will not release control of the group as I did with qrp-l. I don't
want any attacks made on me for this decision. I am in control.
I control the vertical. I control the horizontal.

Hopefully the run was worth the humongous amount of time and energy
I spent on projects and trying to stimulate the group. I kept the
20m 5W xcvr and will be on 20m trying for DXCC before I go deaf. :-)
It's the last thing on my bucket list for ham radio.

ciao,

chuck, k7qo

On 11/3/19 11:42 PM, JT Croteau wrote:
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









Re: QRPGuys DSB Digital Transceiver

Bob Macklin
 

How well does it work as a normal QRP transceiver?

Can you use it for RTTY? Because of age I now prefer to use RTTY rather than
CW.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"

----- Original Message -----
From: "Jack via Groups.Io" <jjpurdum@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 6:46 PM
Subject: Re: [qrp-tech] QRPGuys DSB Digital Transceiver


All this is specious to me. If it was a kilowatt kit with the likelihood of
hundreds of them operating simultaneously all over each band, then maybe it
an issue. It something to experiment with for those who have the talent and
time. Personally, other than knocking off awards, the allure of FT8 puzzles
me. On the other hand, if someone is upset with the fact it's DSB, perhaps
it will lead to hacks that cheaply change it.
If you bought one, built it, use it. If it becomes a real issue, I'm sure
we'll hear about it. Until then, let's put the cart back behind the horse
again.
Jack, W8TEE

On Sunday, November 3, 2019, 5:47:18 PM EST, 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


Re: QRPGuys DSB Digital Transceiver

 

Mine works pretty good. I have made a couple dozen contacts on forty and thirty.
A great toy for 50 bucks.

Terry
w6leo


Re: QRPGuys DSB Digital Transceiver

 

Bob:
It's very true that conditions right now suck compared to the 70's. I had regular sked's for phone patch traffic between our military personnel stationed on Guam and the Marshall Islands and their spouses left at home at Offut AFB (SAC Headquarters). However, poor conditions does NOT mean bad ham radio. Indeed, one of my club members worked 160 DX stations during the recent CQ DX contest. It may take a little more effort today than 40 years ago, but the bands still provide enjoyable QSO's if you want them.

Isn't it odd the bands are moribund at "normal" times but are actually crowed on FD and other popular contests. Hmmm. I wonder...How much of this "The-bands-are-horrible" crap is because we turn on the radio, tune around for five minutes and, not hearing anything, shut down everything just so you can go upstairs and rearrange your sock drawer. I wonder what would happen if every one of us tuned around for five minutes and, not hearing anything, called CQ for five minutes before giving up? I'll bet you'd make a contact more often than not...especially if everyone else was doing the same thing.
I know the science and the sun's being pretty crappy about things at the moment. Still, I wonder what would happen if...
Jack, W8TEE

On Sunday, November 3, 2019, 9:32:09 PM EST, Bob Macklin <macklinbob@...> wrote:

Part of the problem with ham radio today is ready built radios are too
expensive for a lot of us.

70 years ago we could buy a surplus BC-453 (Q5'er) for $5 and build a
converter to put in front of it for another $10.

Not so today. And the kits like Heathkit are long gone.The Heathkit low
power transverters (HW-7, HW-8, HW-9) all go for several hundred bucks on
eBay. And they are just direct conversion receivers.

A good starting point is the NorCal40. It's single band but it's pretty
cheap. And PCBs have been available.

Now is not a good time for ham radio. We are at the low point of the solar
cycle. We may have just started Solar Cycle 25. I think partially because of
this the ham radio activity is at a low point.

If you don't have a GC receiver there are a lot available on eBay. I like
the Heathkits. I have mostly tube types but I do have a couple solid state
units.

They will let you listen to the activity on the bands.If you don't hear any
activity on one of these you won't hear any on your QRP kit.

It doesn't hurt to have a signal generator.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message -----
From: "chuck adams" <chuck.adams.k7qo@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 4:15 PM
Subject: Re: [qrp-tech] QRPGuys DSB Digital Transceiver


I second the notion.? Build it, use it and see what it does.

I built the kit and put it on the air and worked almost 30 Qs with
it.? I am not a fan of the mode after the fact.? You just point
and click and get a simple exchange.? For $40, you do get something
that does work.

You guys remember the pixie?? Did you get it to work as well?

And, going back to the QRPGuys kit.? I never received a follow up
email saying I was causing problems by being on the air.

I have, in the last five weeks pulled a Brian May, of Queen fame,
by doing over 4,000 lines of C code and two books with more in
the queue and gone back to doing physics.? I have downsized the lab.
I spent 26 years doing QRP stuff and it's time for me to devote time to
doing physics seriously again.? I've a bunch of papers to publish
that I have done over the past 20 years.

The EMRFD group has gone.? It is time for this group to also come
to and end.

I do not want this group to turn into a bashing group. Too many people
have their own agenda.

This group is coming to its end of life.? At the end of the year I will
disable all posting, but the material files and messages will remain
intact for the duration of the life of groups.io as long as we are not
charged for the use of the space.? Greed seems to be kicking in on
the Internet and every one wants to make money.

Feel free to start a qrp group with another name and announce it here.
I will not release control of the group as I did with qrp-l.? I don't
want any attacks made on me for this decision.? I am in control.
I control the vertical.? I control the horizontal.

Hopefully the run was worth the humongous amount of time and energy
I spent on projects and trying to stimulate the group.? I kept the
20m 5W xcvr and will be on 20m trying for DXCC before I go deaf.? :-)
It's the last thing on my bucket list for ham radio.

ciao,

chuck, k7qo

On 11/3/19 11:42 PM, JT Croteau wrote:
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









Re: QRPGuys DSB Digital Transceiver

ajparent1/kb1gmx
 

JIm,
It was phasing and also could also do AM synchronous.

Allison
--
Please reply on the group, no private emails we as a group get to share info that way.


Re: QRPGuys DSB Digital Transceiver

 

All this is specious to me. If it was a kilowatt kit with the likelihood of hundreds of them operating simultaneously all over each band, then maybe it an issue. It something to experiment with for those who have the talent and time. Personally, other than knocking off awards, the allure of FT8 puzzles me. On the other hand, if someone is upset with the fact it's DSB, perhaps it will lead to hacks that cheaply change it.
If you bought one, built it, use it. If it becomes a real issue, I'm sure we'll hear about it. Until then, let's put the cart back behind the horse again.
Jack, W8TEE

On Sunday, November 3, 2019, 5:47:18 PM EST, 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


Re: QRPGuys DSB Digital Transceiver

ajparent1/kb1gmx
 

Bob,

That is totally correct unless you are in the first 100khz.

Allison

--
Please reply on the group, no private emails we as a group get to share info that way.


Re: QRPGuys DSB Digital Transceiver

Bob Macklin
 

Part of the problem with ham radio today is ready built radios are too
expensive for a lot of us.

70 years ago we could buy a surplus BC-453 (Q5'er) for $5 and build a
converter to put in front of it for another $10.

Not so today. And the kits like Heathkit are long gone.The Heathkit low
power transverters (HW-7, HW-8, HW-9) all go for several hundred bucks on
eBay. And they are just direct conversion receivers.

A good starting point is the NorCal40. It's single band but it's pretty
cheap. And PCBs have been available.

Now is not a good time for ham radio. We are at the low point of the solar
cycle. We may have just started Solar Cycle 25. I think partially because of
this the ham radio activity is at a low point.

If you don't have a GC receiver there are a lot available on eBay. I like
the Heathkits. I have mostly tube types but I do have a couple solid state
units.

They will let you listen to the activity on the bands.If you don't hear any
activity on one of these you won't hear any on your QRP kit.

It doesn't hurt to have a signal generator.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"

----- Original Message -----
From: "chuck adams" <chuck.adams.k7qo@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 4:15 PM
Subject: Re: [qrp-tech] QRPGuys DSB Digital Transceiver


I second the notion. Build it, use it and see what it does.

I built the kit and put it on the air and worked almost 30 Qs with
it. I am not a fan of the mode after the fact. You just point
and click and get a simple exchange. For $40, you do get something
that does work.

You guys remember the pixie? Did you get it to work as well?

And, going back to the QRPGuys kit. I never received a follow up
email saying I was causing problems by being on the air.

I have, in the last five weeks pulled a Brian May, of Queen fame,
by doing over 4,000 lines of C code and two books with more in
the queue and gone back to doing physics. I have downsized the lab.
I spent 26 years doing QRP stuff and it's time for me to devote time to
doing physics seriously again. I've a bunch of papers to publish
that I have done over the past 20 years.

The EMRFD group has gone. It is time for this group to also come
to and end.

I do not want this group to turn into a bashing group. Too many people
have their own agenda.

This group is coming to its end of life. At the end of the year I will
disable all posting, but the material files and messages will remain
intact for the duration of the life of groups.io as long as we are not
charged for the use of the space. Greed seems to be kicking in on
the Internet and every one wants to make money.

Feel free to start a qrp group with another name and announce it here.
I will not release control of the group as I did with qrp-l. I don't
want any attacks made on me for this decision. I am in control.
I control the vertical. I control the horizontal.

Hopefully the run was worth the humongous amount of time and energy
I spent on projects and trying to stimulate the group. I kept the
20m 5W xcvr and will be on 20m trying for DXCC before I go deaf. :-)
It's the last thing on my bucket list for ham radio.

ciao,

chuck, k7qo

On 11/3/19 11:42 PM, JT Croteau wrote:
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









Re: Phasing SSB Transceiver: Homebrew w/o a scope?

Bob Macklin
 

My memory tell me the NorCal Sierra first converts the incoming signal to
about 8MHz then the VFO is used to convert that to the 4.9MHz IF.

The crystals used are 8MHz above the band lower edge.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"

----- Original Message -----
From: "ajparent1/kb1gmx" <kb1gmx@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 4:09 PM
Subject: Re: [qrp-tech] Phasing SSB Transceiver: Homebrew w/o a scope?


Bob,

The norcal sierra is a single conversion.
The uBitx is double conversion with the 45mhz and 12/11.052 second if.

the difference is notable.

There are many single conversion CW radios and a few SSB radios,
the CR series, KNG7A, KD1JV survivor, bitx20 come to mind for SSB.
For CW the 1Watter and The Orgainc from KitsandParts.com.

There are more but memory....

Allison
--
Please reply on the group, no private emails we as a group get to share info
that way.


Re: QRPGuys DSB Digital Transceiver

 

and on a lighter note ..website american radio history" <> just uploaded about all QST mags up thru 1949 ..read Norgaard's article in July 1948 on a "phasing adaptor for ssb" ...Looks like a synchrodyne detectorto me ...

Now to solid-state it ..
Jim

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







Re: QRPGuys DSB Digital Transceiver

 

I second the notion. Build it, use it and see what it does.

I built the kit and put it on the air and worked almost 30 Qs with
it. I am not a fan of the mode after the fact. You just point
and click and get a simple exchange. For $40, you do get something
that does work.

You guys remember the pixie? Did you get it to work as well?

And, going back to the QRPGuys kit. I never received a follow up
email saying I was causing problems by being on the air.

I have, in the last five weeks pulled a Brian May, of Queen fame,
by doing over 4,000 lines of C code and two books with more in
the queue and gone back to doing physics. I have downsized the lab.
I spent 26 years doing QRP stuff and it's time for me to devote time to doing physics seriously again. I've a bunch of papers to publish
that I have done over the past 20 years.

The EMRFD group has gone. It is time for this group to also come
to and end.

I do not want this group to turn into a bashing group. Too many people
have their own agenda.

This group is coming to its end of life. At the end of the year I will
disable all posting, but the material files and messages will remain
intact for the duration of the life of groups.io as long as we are not
charged for the use of the space. Greed seems to be kicking in on
the Internet and every one wants to make money.

Feel free to start a qrp group with another name and announce it here.
I will not release control of the group as I did with qrp-l. I don't
want any attacks made on me for this decision. I am in control.
I control the vertical. I control the horizontal.

Hopefully the run was worth the humongous amount of time and energy
I spent on projects and trying to stimulate the group. I kept the
20m 5W xcvr and will be on 20m trying for DXCC before I go deaf. :-)
It's the last thing on my bucket list for ham radio.

ciao,

chuck, k7qo

On 11/3/19 11:42 PM, JT Croteau wrote:
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






Re: QCX-40 Working...Sort of...

Chuck Carpenter
 

That message was mis-sent to the wrong group.

Should have been to QCXlabs.io

The problem was found via a reply with links to previous messages.

Cleaned up some soldering and all is well, really nice Tcvr, having fun...



Chuck, W5USJ (ex K2OFN)
ARCI 5422, SKCC 19956
EM22cv, Rains Co., Texas


Re: Phasing SSB Transceiver: Homebrew w/o a scope?

ajparent1/kb1gmx
 

Bob,

The norcal sierra is a single conversion.
The uBitx is double conversion with the 45mhz and 12/11.052 second if.

the difference is notable.

There are many single conversion CW radios and a few SSB radios,
the CR series, KNG7A, KD1JV survivor, bitx20 come to mind for SSB.
For CW the 1Watter and The Orgainc from KitsandParts.com.

There are more but memory....

Allison
--
Please reply on the group, no private emails we as a group get to share info that way.


Re: Phasing SSB Transceiver: Homebrew w/o a scope?

 

Thank you everyone for the responses, and even a couple of private emails! I have some reading/learning to do and I'm going to have to get EMFRD from the Library again.

I also want to go with a phasing setup because I feel like it's the next bit of evolution in my understanding of radios. I think I'll start with building a DC receiver with phasing, homebrewed. It'll be some time before I get to it though, I am still working to finish a recumbent trike build :)

--
Ryan Flowers W7RLF


Re: QRPGuys DSB Digital Transceiver

Bob Macklin
 

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







Re: Phasing SSB Transceiver: Homebrew w/o a scope?

ajparent1/kb1gmx
 

Both are easy, just different.
The problem is the one that is least understood will be scarier.

The difference is trading critical RF sections for more parts
in the audio section.

The big feature of phasing is they work as well at 100khz as
they do at 500mhz or higher.

Allison
--
Please reply on the group, no private emails we as a group get to share info that way.


Re: Phasing SSB Transceiver: Homebrew w/o a scope?

Bob Macklin
 

How about a double conversion Rx based on the NorCal Sierra design.

All the crystals for the HF converter are available from Mouser or DigiKey.
They are standard frequencies.You can substitute a LC bandpass filter for
the 4.9MHz IF filter.

Both converters can be NE-602s.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"

----- Original Message -----
From: "Bill Meara via Groups.Io" <n2cqr@...>
To: <[email protected]>
Sent: Sunday, November 03, 2019 11:51 AM
Subject: Re: [qrp-tech] Phasing SSB Transceiver: Homebrew w/o a scope?


Having built both a phasing receiver and many filter rigs, I think a single
conversion filter rig is easier. Why not build a single conversion superhet
receiver first. Good luck 73 Bill N2CQR
On Sunday, November 3, 2019, 11:56:46 AM EST, ajparent1/kb1gmx
<kb1gmx@...> wrote:

FYI the QCX receiver is a image rejecting design (phasing) for SSB changing
a
few resistors in the audio filter (from CW band width to SSB) and it sounds
very
good.

Allison

--
Please reply on the group, no private emails we as a group get to share info
that way.


Re: QRPGuys DSB Digital Transceiver

JT Croteau
 

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






Re: QRPGuys DSB Digital Transceiver

 

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


Re: QRPGuys DSB Digital Transceiver

 

Adam Rong (BD6CR) wrote this in his manual for his D4D/FT8 kit:
"Do we have to worry about the unwanted Lower Side Band (LSB)
and Inter-Modulation Distortion (IMD)? Maybe, but for a transmitter
of 1-watt, it is not really a big problem for occasional field, SOTA or
experimental purposes. Is it just a toy for a transmitter of 1-watt and
only half of the effective power? Not really, as I can easily make a
few QSO¡¯s as far as 1500 miles range even for 40-meter band when
the propagation opens."

On Sun, Nov 3, 2019 at 3:47 PM 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



--
Larry Lovell
73's N7RGW
<>
Cell: 214-697-1729