Date   

Re: Inexpensive Chinese DDS and the SS40HT/SS40TX

WA0ITP
 

Thanks Jim, great job all around.  Have a good vacation..
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 6/29/2017 8:46 AM, 'Jim Sheldon' w0eb@... [4sqrp] wrote:

 

I'm uploading a PDf file with what documentation is available from the
Chinese on the particular little DDS VFO I bought off eBay for less than
$40. It came with almost no information/instructions, but with a lot of
internet searching and my own experimenting with one, I've been able to
piece together enough information to make one work reliably. I've also
successfully interfaced it with the SS40HT receiver and with the help of
its original designer Jim Kortge, K8IQY, also had success with the
SS40TX in it's originally intended transceive mode with the SS40HT/RX.

I've compiled the DDS information along with my own notes interpreting
the Chinese English and added an appendix to the DDS instructions with
details on how to interface it with the SS40 pair. All the information
I have on the DDS is contained in this document and I won't be available
to answer further questions for some time due to vacation travel - I'll
be off the beaten path and will have very little internet access for
much of the trip.

Hopefully the file will explain things sufficiently for those of you
that have the SS40HT and SS40TX and want to hook up a DDS VFO in place
of the original VXO to give a bit more tuning range without having to
switch out the crystals in the VXO as some of you have already done.

Jim - W0EB



Re: Inexpensive Chinese DDS and the SS40HT/SS40TX

Jeff Logullo N0̸MII
 

Jim,

Thanks for all your efforts in compiling that guide, and for sharing it with us. I'll have to put this on my ever-growing "to do" list! :-)

72,
Jeff N0MII


On Jun 29, 2017, at 8:46 AM, 'Jim Sheldon' w0eb@... [4sqrp] <4sqrp@...> wrote:

I'm uploading a PDf file with what documentation is available from the 
Chinese on the particular little DDS VFO I bought off eBay for less than 
$40. It came with almost no information/instructions, but with a lot of 
internet searching and my own experimenting with one, I've been able to 
piece together enough information to make one work reliably. I've also 
successfully interfaced it with the SS40HT receiver and with the help of 
its original designer Jim Kortge, K8IQY, also had success with the 
SS40TX in it's originally intended transceive mode with the SS40HT/RX.

I've compiled the DDS information along with my own notes interpreting 
the Chinese English and added an appendix to the DDS instructions with 
details on how to interface it with the SS40 pair. All the information 
I have on the DDS is contained in this document and I won't be available 
to answer further questions for some time due to vacation travel - I'll 
be off the beaten path and will have very little internet access for 
much of the trip.

Hopefully the file will explain things sufficiently for those of you 
that have the SS40HT and SS40TX and want to hook up a DDS VFO in place 
of the original VXO to give a bit more tuning range without having to 
switch out the crystals in the VXO as some of you have already done.

Jim - W0EB



Re: Inexpensive Chinese DDS and the SS40HT/SS40TX

Bob Macklin <macklinbob@...>
 

"Chinese English" = "CHINGLISH"!
 
 

----- Original Message -----
Sent: Thursday, June 29, 2017 6:46 AM
Subject: [4sqrp] Inexpensive Chinese DDS and the SS40HT/SS40TX

 

I'm uploading a PDf file with what documentation is available from the
Chinese on the particular little DDS VFO I bought off eBay for less than
$40. It came with almost no information/instructions, but with a lot of
internet searching and my own experimenting with one, I've been able to
piece together enough information to make one work reliably. I've also
successfully interfaced it with the SS40HT receiver and with the help of
its original designer Jim Kortge, K8IQY, also had success with the
SS40TX in it's originally intended transceive mode with the SS40HT/RX.

I've compiled the DDS information along with my own notes interpreting
the Chinese English and added an appendix to the DDS instructions with
details on how to interface it with the SS40 pair. All the information
I have on the DDS is contained in this document and I won't be available
to answer further questions for some time due to vacation travel - I'll
be off the beaten path and will have very little internet access for
much of the trip.

Hopefully the file will explain things sufficiently for those of you
that have the SS40HT and SS40TX and want to hook up a DDS VFO in place
of the original VXO to give a bit more tuning range without having to
switch out the crystals in the VXO as some of you have already done.

Jim - W0EB


Re: 4sqrp Reflector [1 Attachment]

WA0ITP
 

Good report Barry, tnx.  What a dyno-mite antenna!
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 6/28/2017 9:45 PM, Barry Strickland ab4ql1@... [4sqrp] wrote:

 
Our club operates under two categories.  The 100 watt SSB stations which were using the call of our club president KK4ICU
with 3A AL.  We we were all set up at Plainview High School and adjacent Civic Center in Rainsville, Alabama, this is about 
50 miles SW of Chattanooga, TN.  
 My station, 5 Watt CW operating under the club call W4GBR  1A AL.  I set up a 280' sloping delta loop with an average elevation 
of about 40'.  It was fed with 300 Ohm twin lead to a LDG Z-11 Pro II tuner and a KX3.  My partner was Tom KC5UN, we switched 
off to give each other a break every so often which worked out well.  Calling CQ did not work out well, as usual, so we used the 
S&P method.  

Here's the QRP band-QSO breakdown:
10m - 34
15m - 43
20m - 82
40m - 110
80m - 46
           315 total contacts  

The three QRO stations had a total of just over 400 contacts.  

The highlight of the event was when we took a break for the BBQ dinner!  

I am attaching a picture of my dupe checker, Brittany KM4BRR and I.  Notice we are set up inside the shop area of the school. 
As always FD is a fun experience.  I did not have any trouble sleeping Sunday night!  



New file uploaded to 4sqrp

4sqrp@...
 

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the 4sqrp
group.

File : /Chinese DDS Signal Generator.pdf
Uploaded by : w0eb <w0eb@cox.net>
Description : Documentation and interface information on an inexpensive DDS VFO for the SS40HT and SS40TX combination

You can access this file at the URL:
https://groups.yahoo.com/neo/groups/4sqrp/files/Chinese%20DDS%20Signal%20Generator.pdf

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&;y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

w0eb <w0eb@cox.net>


Inexpensive Chinese DDS and the SS40HT/SS40TX

Jim Sheldon
 

I'm uploading a PDf file with what documentation is available from the
Chinese on the particular little DDS VFO I bought off eBay for less than
$40. It came with almost no information/instructions, but with a lot of
internet searching and my own experimenting with one, I've been able to
piece together enough information to make one work reliably. I've also
successfully interfaced it with the SS40HT receiver and with the help of
its original designer Jim Kortge, K8IQY, also had success with the
SS40TX in it's originally intended transceive mode with the SS40HT/RX.

I've compiled the DDS information along with my own notes interpreting
the Chinese English and added an appendix to the DDS instructions with
details on how to interface it with the SS40 pair. All the information
I have on the DDS is contained in this document and I won't be available
to answer further questions for some time due to vacation travel - I'll
be off the beaten path and will have very little internet access for
much of the trip.

Hopefully the file will explain things sufficiently for those of you
that have the SS40HT and SS40TX and want to hook up a DDS VFO in place
of the original VXO to give a bit more tuning range without having to
switch out the crystals in the VXO as some of you have already done.

Jim - W0EB


Re: 4sqrp Reflector

Barry Strickland
 

Our club operates under two categories.  The 100 watt SSB stations which were using the call of our club president KK4ICU
with 3A AL.  We we were all set up at Plainview High School and adjacent Civic Center in Rainsville, Alabama, this is about 
50 miles SW of Chattanooga, TN.  
 My station, 5 Watt CW operating under the club call W4GBR  1A AL.  I set up a 280' sloping delta loop with an average elevation 
of about 40'.  It was fed with 300 Ohm twin lead to a LDG Z-11 Pro II tuner and a KX3.  My partner was Tom KC5UN, we switched 
off to give each other a break every so often which worked out well.  Calling CQ did not work out well, as usual, so we used the 
S&P method.  

Here's the QRP band-QSO breakdown:

10m - 34
15m - 43
20m - 82
40m - 110
80m - 46
           315 total contacts  

The three QRO stations had a total of just over 400 contacts.  

The highlight of the event was when we took a break for the BBQ dinner!  

I am attaching a picture of my dupe checker, Brittany KM4BRR and I.  Notice we are set up inside the shop area of the school. 
As always FD is a fun experience.  I did not have any trouble sleeping Sunday night!  


Re: Tonight's 40m net

dekle <dekle@...>
 


We had another one.
Dave KG0YR in Mo was calling and we had a nice QSO after the net.
 
73
Bill
KV6Z
 
 

----- Original Message -----
Sent: Wednesday, June 28, 2017 7:51 PM
Subject: [4sqrp] Tonight's 40m net

 

GE All
Checkins were:
KV6Z - Bill - OK
WA9PWP - Paul - WI
W2SH - Chas - NJ
Once again using the Vibroplex, I think it's getting better (I hope!)
Thanks all es God Bless de Wayne - NQ0RP

--

 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - NQ0RP

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17

 
NAQCC MWN NCS
NAQCC Net manager
NAQCC # 0759
Membership Chairman - 4SQRP Group
4SQRP 40m NCS
4SQRP #95
FISTS 17184
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-11504
QRP-ARCI #11505
SKCC #1155T
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686
Zombie# 1186


Virus-free. www.avast.com


Tonight's 40m net

Wayne Dillon
 

GE All
Checkins were:
KV6Z - Bill - OK
WA9PWP - Paul - WI
W2SH - Chas - NJ
Once again using the Vibroplex, I think it's getting better (I hope!)
Thanks all es God Bless de Wayne - NQ0RP

--
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - NQ0RP

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 
NAQCC MWN NCS
NAQCC Net manager
NAQCC # 0759
Membership Chairman - 4SQRP Group
4SQRP 40m NCS
4SQRP #95
FISTS 17184
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-11504
QRP-ARCI #11505
SKCC #1155T
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686
Zombie# 1186


Re: Cricketeers

Curt
 

Six unique stations so far here.  If I ever get to 10 will likely be after time change, am just not a night owl and never hear anyone in early morning,  80M QRPp not my cup of tea.

71/72/73 Curt KB5JO


Tonights 40m net et al

Wayne Dillon
 

Good afternoon all,
There will be a 40m Net this evening, same time same channel as they (whoever "they" are) say on the good ole idiot box.
After this net I will be suspending the 40m net until at least the first Wednesday of October. 
Be blessed all de Wayne - NQ0RP

--
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - NQ0RP

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 
NAQCC MWN NCS
NAQCC Net manager
NAQCC # 0759
Membership Chairman - 4SQRP Group
4SQRP 40m NCS
4SQRP #95
FISTS 17184
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-11504
QRP-ARCI #11505
SKCC #1155T
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686
Zombie# 1186


Cricketeers

WA0ITP
 

Congratulations Wayne! Anyone else out thereclosing in on 10contacts?

72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com

On 6/28/2017 10:06 AM, dekle@atlasok.com [4sqrp] wrote:


Wayne Steury - N9EGT - is now 4S Cricket Society member #004.

Wayne has demonstrated that dedication, patience, and skill can pay big dividends in the QRPp world.

Well done Wayne, and welcome aboard.


We now have 4 states represented in the society.


73

Bill

KV6Z




INDIANA OPERATOR GETS IT DONE !!!

dekle@...
 


Wayne Steury - N9EGT - is now 4S Cricket Society member #004.

Wayne has demonstrated that dedication, patience, and skill can pay big dividends in the QRPp world.

Well done Wayne, and welcome aboard.


We now have 4 states represented in the society.


73

Bill

KV6Z




Re: "Jayhawker" first QSO

WA0ITP
 

GM Jim,

Great job! I also bolted the pair together and made 20+ contacts.  It makes a very nice combo.  Your packaging looks great and the dds VFO is just what it needs. Care to share any info on the dds vfo? Tnx for sharing your work.

72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 6/27/2017 9:00 AM, 'Jim Sheldon' w0eb@... [4sqrp] wrote:

Well, the "Jayhawker" (SS40 twins packaged similar to a Bayou Jumper and the VXO replaced with a cheap Chinese $35 DDS VFO) is finally operational and had it's first contact this morning with Don, WB6BEE on 7.025MHz at 12:54 UTC.  Antenna was a PAR EndFedZ 40-20-10 meter antenna up maybe 20 feet at it's highest point.  I was also copied by W6QR in Torrance, CA but I'd already signed and didn't work him.  Heard him talking to WB6BEE about my signal being 559 in Torrance though before I pulled the antenna (thunderstorms in the area again).

Jim - W0EB



SS40HT

Jim Sheldon
 

Looking for one more SS40HT receiver (SS40TX transmitter a plus but not
necessary) - built or unbuilt (preferrably unbuilt) for a reasonable
price to use for DDS documentation experiment. Please reply off list if
you have one.

Jim Sheldon, W0EB

(w0eb (at) cox.net)


"Jayhawker" first QSO

Jim Sheldon
 

Well, the "Jayhawker" (SS40 twins packaged similar to a Bayou Jumper and
the VXO replaced with a cheap Chinese $35 DDS VFO) is finally
operational and had it's first contact this morning with Don, WB6BEE on
7.025MHz at 12:54 UTC. Antenna was a PAR EndFedZ 40-20-10 meter antenna
up maybe 20 feet at it's highest point. I was also copied by W6QR in
Torrance, CA but I'd already signed and didn't work him. Heard him
talking to WB6BEE about my signal being 559 in Torrance though before I
pulled the antenna (thunderstorms in the area again).

Jim - W0EB


Re: FD from Arkansas

Dave Belville
 

Darryl,

I would be interested in learning a little more about your 205 ft center fed with the 9:1 balun. Would you mind sharing some information?

Thank you,

Dave, KD9VT


Re: FD from Arkansas

RWeeks <neotoxo54@...>
 

Well my day started out with good intentions BUT after checking the bands with http://dxcluster.ha8tks.hu/rbn/
All I saw was shoulder to shoulder OPs...looked like contesting to me...Which...ARRL says FD isn't a contest but IMHO I couldn't tell the difference having listened to allot of stations throughout the day...SO, I spent my time on the non-Field Day bands...much less crowded and quieter...
Kudos to those who waded those crowded waters...


Sent from my iPad Mini
Rocky Weeks, AF5AF
East Arkansas Fur Takers, FTA Chap 29B

On Jun 26, 2017, at 12:30, kk5ib01@... [4sqrp] <4sqrp@...> wrote:

 

I operated about three hours from home, 50 contacts and 33 sections, QRP CW 5 watts into my 205' center fed antenna and the new 9:1 balun, 40, 20 and 15 meters, CA, FL, NH, MAR, PA, NY, NM, WY, CO, MT, plus most of the close in states. One of my local clubs rented a house on a lake but I didn't get to go with them, still recovering from double pneumonia.
Darryl, KK5IB



Re: 4sqrp Reflector

Ken Talbott
 

I operated 1A portable, in the woods abt 1/4 mile from my home in Southside Va. I used kx1, kx2 and end fed, trapped multiband antenna. I operated only the last 4 hours on Sunday. I really wanted simplicity of the kx1 to work, but it wasn't up to the crowded conditions around 1400z, so I switched to the kx2. What a difference! With the exception of on-frequency QRM, the kx2 eliminated adjacent station interference. I logged 89 QSO's on 40m and 20m. By 1800z crowding had reduced to the point that I probably could have returned to the kx1, but I was enjoying the armchair copy. I was able to work stations from 10 to 30 WPM, well above my comfort speed of 20. I probably could have logged more, but the total experience was enhanced by a good cigar and a hot carafe of coffee. I hope everyone took advantage of the great wx and band conditions.
Ken ke4rg

On Jun 26, 2017, at 1:09 PM, "'Jim Sheldon' w0eb@... [4sqrp]" <4sqrp@...> wrote:
 

We had company all weekend and there wasn't time to get out, either to
operate solo from the local park (6 blocks away) or with one of the
clubs. I did listen for a while but just



FD from Arkansas

Darryl J Kelly
 

I operated about three hours from home, 50 contacts and 33 sections, QRP CW 5 watts into my 205' center fed antenna and the new 9:1 balun, 40, 20 and 15 meters, CA, FL, NH, MAR, PA, NY, NM, WY, CO, MT, plus most of the close in states. One of my local clubs rented a house on a lake but I didn't get to go with them, still recovering from double pneumonia.
Darryl, KK5IB


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