Date   
Re: FT8

Vince Vielhaber
 

2.0 wasn't official until today.

Vince - K8ZW.

On 12/10/2018 06:08 PM, Kelly Jack wrote:
The way this upgrade has been released noting the incompatability beteen
1.9 and 2.0 versions is problematic.

Plenty of FT8 signals on the scope - one decode the last two nights
using 2.0. Switched back to 1.9 and everything is decoded. I want to
make contacts, thats wasn't happening for me on 2.0, so why change.
Seems 2.0 is vulnerable the network effect.


73

Simon

Re: FT8

Kelly Jack
 

The way this upgrade has been released noting the incompatability beteen 1.9 and 2.0 versions is problematic.

Plenty of FT8 signals on the scope - one decode the last two nights using 2.0. Switched back to 1.9 and everything is decoded. I want to make contacts, thats wasn't happening for me on 2.0, so why change. Seems 2.0 is vulnerable the network effect.


73

Simon

Re: FT8

Vince Vielhaber
 

I've been using 2.0 all day today. Lots of contacts around the globe. Any problems with it should be answered in the Getting Started guide, such as the one Art mentions below.

Vince.

On 12/10/2018 05:03 PM, Art Olson via Groups.Io wrote:
Rocco
The errors, assume, you are referring to the ssl/tsl error. Easy fix
(guidance) on the WSJT-X software website. Fixed with a simple download.
I am up and running.

73
Art


On Dec 10, 2018, at 4:23 PM, Rocco Conte <rconte41@...
<mailto:rconte41@...>> wrote:

With all the errors I am seeing today, I am afraid to upgrade. I am
doing the grid chase and have been using 99.9% FT8.
If most people stay on 1.9, I feel like I am shooting myself in the
foot. I was afraid of this happening. Especially this close to the end
of a year long event that a lot of people have been chasing with FT8.
Add to that the misc. errors that are coming up and I really
don't have a good feeling.

73,
Rocco


On Mon, Dec 10, 2018 at 3:49 PM Anthony Luscre <k8zt73@...
<mailto:k8zt73@...>> wrote:



If you are operating FT8, it is recommended that you upgrade to
newest version (2.0) as soon as
possible- https://physics.princeton.edu/pulsar/k1jt/wsjtx.html

*Anthony Luscre*

*K8ZT*
Ohio Section Section Youth Coordinator & Education Outreach
ARRL - The National Association For Amateur Radio™

a@... <mailto:a@...> (best for Education & Technology)
@K8ZT <mailto:@K8ZT> (best for Amateur Radio)

*The Web Resource Hoarder- www.ZTLearn.com <http://www.ZTLearn.com>*
*Web Resource Hoarder Blog**
*
*
*
*K8ZT Radio Website- www.k8zt.com <http://www.k8zt.com>*
*My Radio Blog- k8zt.blogspot.com <http://k8zt.blogspot.com/>*

*
*

Memory manager

Marc Jones
 

I've recently been using KD8CEC'S memory manager version 0.97 , Just learning my way around really , Today I started using version  1.081 ... I've now got my S meter to work using the  LM-358 op amp circuit ... so good so far ... Trouble I've now got that I didn't have with version 0.97 is that when I write to Microbitx , For done teadon the sidebands now get flipped , LSB now becomes USB and visa-Versa ...  Luckily I saved a copy of an older   Micro-Bitx file, So I'm able to copy that back to the micro bits , It then all works as it should , But the S meter stops working as it's now turned off ... Does anyone know why the sidebands are getting reversed ? .... Is there an issue with Memory manager version 1.081 .....
Thanks

Gw0wvl ' Marc ' ...

Re: FT8

Art Olson
 

Rocco
The errors, assume, you are referring to the ssl/tsl error. Easy fix (guidance) on the WSJT-X software website. Fixed with a simple download. I am up and running. 

73
Art


On Dec 10, 2018, at 4:23 PM, Rocco Conte <rconte41@...> wrote:

With all the errors I am seeing today, I am afraid to upgrade. I am doing the grid chase and have been using 99.9% FT8. 
If most people stay on 1.9, I feel like I am shooting myself in the foot. I was afraid of this happening. Especially this close to the end
of a year long event that a lot of people have been chasing with FT8. Add to that the misc. errors that are coming up and I really
don't have a good feeling.

73,
Rocco


On Mon, Dec 10, 2018 at 3:49 PM Anthony Luscre <k8zt73@...> wrote:


If you are operating FT8, it is recommended that you upgrade to newest version (2.0) as soon as possible-  https://physics.princeton.edu/pulsar/k1jt/wsjtx.html 
 
Anthony Luscre

K8ZT
Ohio Section Section Youth Coordinator & Education Outreach
ARRL - The National Association For Amateur Radio™
 
a@... (best for Education & Technology)
k8zt@... (best for Amateur Radio)

The Web Resource Hoarder- www.ZTLearn.com
Web Resource Hoarder Blog

K8ZT Radio Website- www.k8zt.com
My Radio Blog- k8zt.blogspot.com


Re: FT8

Rocco Conte
 

With all the errors I am seeing today, I am afraid to upgrade. I am doing the grid chase and have been using 99.9% FT8. 
If most people stay on 1.9, I feel like I am shooting myself in the foot. I was afraid of this happening. Especially this close to the end
of a year long event that a lot of people have been chasing with FT8. Add to that the misc. errors that are coming up and I really
don't have a good feeling.

73,
Rocco


On Mon, Dec 10, 2018 at 3:49 PM Anthony Luscre <k8zt73@...> wrote:


If you are operating FT8, it is recommended that you upgrade to newest version (2.0) as soon as possible-  https://physics.princeton.edu/pulsar/k1jt/wsjtx.html 
 
Anthony Luscre

K8ZT
Ohio Section Section Youth Coordinator & Education Outreach
ARRL - The National Association For Amateur Radio™
 
a@... (best for Education & Technology)
k8zt@... (best for Amateur Radio)

The Web Resource Hoarder- www.ZTLearn.com
Web Resource Hoarder Blog

K8ZT Radio Website- www.k8zt.com
My Radio Blog- k8zt.blogspot.com


Re: FT8 2 dot Oh

Robert Evans
 

Ft8 2.0 monitor 7074 up.
BCNU DE N2LO~>


Sent from Xfinity Connect Application

-----Original Message-----

From: joe@...
To: wsjt-devel@...
Sent: 2018-12-10 9:10:27 AM
Subject: [wsjt-devel] WSJT-X 2.0.0: GA release

The WSJT Development Group is pleased to announce the general
availability (GA) release of WSJT-X Version 2.0.0.

If you have been using version 1.9.1 or earlier, or one of the candidate
releases v2.0.0-rc#, it's important to upgrade now.  The original
protocols for FT8 and MSK144 are no longer supported.  With v1.9.1 and
earlier you cannot communicate with WSJT-X 2.0 using these modes.

We now recommend using WSJT-X 2.0 anywhere in the conventional FT8 and
MSK144 sub-bands.  Everyone should upgrade to v2.0 by no later than
January 1, 2019.

NEW FEATURES IN WSJT-X 2.0
--------------------------

1. Compound and nonstandard callsigns are automatically recognized and
handled using new FT8 and MSK144 message formats.

2. The new FT8 protocol provides optimized message formats for North
American VHF contests, European VHF contests, ARRL Field Day, and ARRL
RTTY Roundup.  Similarly, the new MSK144 protocol provides optimized
message formats for North American VHF and European VHF contests.  Full
support is provided for "/R" and "/P" calls in the relevant contests.

3. The new protocols provide nearly equal (or better) sensitivity
compared to the old ones, and lower false decode rates.

4. New logging features are provided for contesting and for "Fox"
(DXpedition) mode.  Logging is optionally integrated with N1MM Logger+
and WriteLog.

5. Color highlighting of decoded messages provides worked-before status
for callsigns, grid locators, DXCC entities, continents, CQ Zones, and
ITU zones on a “by band” and “by mode” basis, and for stations that have
uploaded their logs to Logbook of the World (LoTW) within a specified
time interval.

6. The WSPR decoder now achieves decodes down to S/N = -31 dB.  For the
particular benefit of LF/MF users, an option "No own call decodes" has
been added.

7. The UDP messages sent to companion programs have been expanded and
improved.

A more detailed list of program changes can be found in the cumulative
Release Notes:
http://physics.princeton.edu/pulsar/k1jt/Release_Notes.txt

Upgrading from earlier versions of WSJT-X should be seamless.  There is
no need to uninstall a previous version or move any files.

Please do not continue to use any release candidate -- that is, any beta
release with "-rc#" in the version name.

Links to installation packages for Windows, Linux, and Macintosh are
available here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html

You can also download the packages from our SourceForge site:
https://sourceforge.net/projects/wsjt/files/
It may take a short time for the SourceForge site to be updated.

We hope you will enjoy using WSJT-X Version 2.0.0.

      -- 73, Joe, K1JT, for the WSJT Development Group


_______________________________________________
wsjt-devel mailing list
wsjt-devel@...
https://lists.sourceforge.net/lists/listinfo/wsjt-devel 





The Web Resource Hoarder- www.ZTLearn.com
Web Resource Hoarder Blog

K8ZT Radio Website- www.k8zt.com
My Radio Blog- k8zt.blogspot.com


FT8

Anthony Luscre
 



If you are operating FT8, it is recommended that you upgrade to newest version (2.0) as soon as possible-  https://physics.princeton.edu/pulsar/k1jt/wsjtx.html 
 
Anthony Luscre

K8ZT
Ohio Section Section Youth Coordinator & Education Outreach
ARRL - The National Association For Amateur Radio™
 
a@... (best for Education & Technology)
k8zt@... (best for Amateur Radio)

The Web Resource Hoarder- www.ZTLearn.com
Web Resource Hoarder Blog

K8ZT Radio Website- www.k8zt.com
My Radio Blog- k8zt.blogspot.com


Re: Homebrew from scratch #ubitx

Tom, N8TPN
 

Sorry I am also unable to open the gerbers...also JLCPCB rejected my order when I tried to order boards with the file.

They say that..."the D cade is incorrect, please fix and re-upload"...

73,

Tom, N8TPN

Re: UBITX Current Production (spur fix ?) #ubitx

AndyH
 

Another member just received a new µBITX board and it has new relays.  Farhan reported that to be the case but we hadn't yet seen a board with the new relays 'in the wild'.  There's been no assessment yet on other mods that might mitigate spurs, and since there doesn't yet seem to be an assessment on the 'best' way to solve that problem, there likely aren't any spur fixes on production boards yet.

https://groups.io/g/BITX20/message/62415

73, Andy, KG5RKP


On Thu, Dec 6, 2018 at 11:12 AM, Mark Hinkleman wrote:


Question?

Does the current uBITX production version include the spur  and harmonic improvement mods that have been discussed on this group? (ie new relays, etc)
If not,  when can one expect changes to be made to be made on present production. 

I'm Going to buy a ubitx, but wanted to wait unit purity issues are solved. 

Thanks in advance for info
Mark NU8Z



Re: a simple spur fix

freefuel@...
 

Jerry, lets not forget about the oscillator for the Si5351a, be that 25MHz or 27Mhz, that is another potential source for birdies.

-Justin N2TOH 

Re: a simple spur fix

freefuel@...
 

Sadly the 8 output version of the Si5351 has no easy way to set a default frequency on boot up, as the 8 output version has better isolation between outputs, and could also have been used to drive the AVR chip.  along with enough additional outputs for a multitone signal generator to align the filters. 

-Justin N2TOH

WSJT-X 2.0.0: GA release #ft8

Doug W
 

Joe Taylor joe@... via lists.sourceforge.net 

6:11 AM (3 hours ago)
   
to WSJT
The WSJT Development Group is pleased to announce the general
availability (GA) release of WSJT-X Version 2.0.0.

If you have been using version 1.9.1 or earlier, or one of the candidate
releases v2.0.0-rc#, it's important to upgrade now.  The original
protocols for FT8 and MSK144 are no longer supported.  With v1.9.1 and
earlier you cannot communicate with WSJT-X 2.0 using these modes.

We now recommend using WSJT-X 2.0 anywhere in the conventional FT8 and
MSK144 sub-bands.  Everyone should upgrade to v2.0 by no later than
January 1, 2019.

NEW FEATURES IN WSJT-X 2.0
--------------------------

1. Compound and nonstandard callsigns are automatically recognized and
handled using new FT8 and MSK144 message formats.

2. The new FT8 protocol provides optimized message formats for North
American VHF contests, European VHF contests, ARRL Field Day, and ARRL
RTTY Roundup.  Similarly, the new MSK144 protocol provides optimized
message formats for North American VHF and European VHF contests.  Full
support is provided for "/R" and "/P" calls in the relevant contests.

3. The new protocols provide nearly equal (or better) sensitivity
compared to the old ones, and lower false decode rates.

4. New logging features are provided for contesting and for "Fox"
(DXpedition) mode.  Logging is optionally integrated with N1MM Logger+
and WriteLog.

5. Color highlighting of decoded messages provides worked-before status
for callsigns, grid locators, DXCC entities, continents, CQ Zones, and
ITU zones on a “by band” and “by mode” basis, and for stations that have
uploaded their logs to Logbook of the World (LoTW) within a specified
time interval.

6. The WSPR decoder now achieves decodes down to S/N = -31 dB.  For the
particular benefit of LF/MF users, an option "No own call decodes" has
been added.

7. The UDP messages sent to companion programs have been expanded and
improved.

A more detailed list of program changes can be found in the cumulative
Release Notes:
http://physics.princeton.edu/pulsar/k1jt/Release_Notes.txt

Upgrading from earlier versions of WSJT-X should be seamless.  There is
no need to uninstall a previous version or move any files.

Please do not continue to use any release candidate -- that is, any beta
release with "-rc#" in the version name.

Links to installation packages for Windows, Linux, and Macintosh are
available here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html

You can also download the packages from our SourceForge site:
https://sourceforge.net/projects/wsjt/files/
It may take a short time for the SourceForge site to be updated.

We hope you will enjoy using WSJT-X Version 2.0.0.

      -- 73, Joe, K1JT, for the WSJT Development Group


______________________________

Re: a simple spur fix

freefuel@...
 

A) Hi Clark, yes I recall there was an issue with the full swing vs low power with the ATmega644p/ATmega1284p the oscillator was interfering with the serial port in full power mode, it made for interesting times trying to use a serial bootloader.

that said changing the fuse bits in the NANO is very easy with the ATMEL ISP programer, step 1) make a backup copy of the firmware, eeprom, and fuse settings. 2) update the fuse settings from their current state to place the device in low power clock mode. 3) verify firmware, eeprom, and new fuse settings. 

B) Jerry, did you run the numbers for other common catalog crystal frequencies? for example, would running the AVR at 11.052MHz and leaving the IF at 12MHz be a viable option?  

-Justin N2TOH

P.S. Ashhar as an option could a person order the Randino with the NANO uninstalled? some people including myself need the real FTDI USB chip, the other types cause unresolvable usability problems.  the drivers for the chip provided in my kit rendered my Macintosh unusable, I had to use a 3rd party keyboard and mouse to recover the settings.  

Re: Ashhar Farhan #ubitx

Tony Ray KI4KJH
 

Hello everyone. Here is the picture of the uBITX I got just today. So from what I am understanding is that I do not need to replace the relays. I ordered them from Arrow anyways and have them on hand. I had read this article before ordering. http://ubitx.net/2018/12/01/further-information-about-fixes-for-harmonics-spurs-and-imd/ . So I am a little bit lost as to what to do before assembly since i want to leave it together for a while after the build. Any suggestions what should be fixed before putting it all together? As far as spurs go.
  
--
KI4KJH

Re: Ashhar Farhan #ubitx

Ripley
 

Hello Andy,

Yes sir, my uBITX is now FCC compliant (though just barely on 40 meters, CW mode) except for one spur on the 10 meter band. 


Ripley

The words are mine but this iPad does what it will with them.

On Dec 9, 2018, at 3:43 PM, AndyH <ahecker@...> wrote:

Hi Ripley,

  Thank you for the clarification!  My intent was to relate to Jerry that the bidirectional RF amps were still stock.  The amp immediately prior to the filter (that used to feed the mixer directly) has a trio of SMD 2N3904s marked Q20, Q21, and Q22 on the V3 schematic.  I didn't see that you'd replaced those with BFR106s yet, though might have missed plenty.  OM Farhan recommended changing R26 and R46 on the stock amps to help reduce distortion - something else for you to test.  hi hi  
https://groups.io/g/BITX20/message/61586

  Is your signal in spec now except for 10 m SSB?

   Thanks again for  your work!
   Best, Andy

On Sun, Dec 9, 2018 at 02:10 PM, Ripley wrote:

Hi Andy,

 

A slight clarification, actually I replaced Q92, Q93, Q96, Q97 with 2N2222A and the emitter resistors along with Q90 and the change of resistors per Allison’s recommendation First. Then checked for effect in evening out the power across the bands. Then I did the 45MHz crystal filter second. Once again checking the before and after results followed by the relay replacement of KT1-KT3. As with the other mods checking the before and after to see if it improved the performance.

 

I haven’t been able to spend much time on the uBITX lately but the next thing that I want to try is replacing L5 and L7 with surface mount inductors per the experiment that Raj tried but I am also going to keep 45MHz crystal filter in circuit. I want to see if those two mods together will reduce those pesky spurs on 10 meter SSB further.

 

Ripley

 

Sent from Mail for Windows 10

 

From: AndyH
Sent: Sunday, December 9, 2018 1:42 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Ashhar Farhan #ubitx

 

A number of people are working to meet different thresholds of 'take care'-edness (two more times in print and it's a real word).  A few (probably in a nod to the phase noise wars) are pushing for a standard just shy of unobtanium.  Others are working to meet regulatory requirements.  Ripley, KD8UYQ, found that relays and a 45 MHz crystal/transformer/cap was quite effective.  That's on a board using the stock 3904s for Q20/Q21/Q22 and before Farhan's recent emitter current increase for Q21/Q22.
https://forums.qrz.com/index.php?threads/ubitx-transceiver-semi-kit-build.624098/page-7#post-4792444

Thanks for pointing out Farhan's recent post about current production boards.  That's a curious statement and one that reverses two previous posts that make clear that the relays had been updated and that fixes are added to production on the fly.  I guess I'll "have" to order another one after the holidays and see what's different.

Interesting on needing to match the 45 MHz filters.  After enjoying the process of matching crystals for my in-progress scratch build, it might be interesting to check the 45 MHz filters I purchased from AliExpress and Mini-Kits.  If I recall, the point of the 2nd filter is to remove the "stuff not 45 MHz".  That might mean that a wider variant of the filter would be useful/usable there and might not need to be a narrow filter closely matched to Y1.  TIme to fire-up the Sweeperino, maybe.  Since matched pairs are available, though...
https://www.ebay.com/itm/Tellurian-Technologies-45MHz-Crystal-Bandpass-Filter-T45U15BG-Matched-Pair/181956516605?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

73, Andy, KG5RKP


On Wed, Dec 5, 2018 at 10:34 PM, Jerry Gaffke wrote:

I don't see a post yet that clearly spells out how to take care of the spurs.
This should include pointers to specific parts, show how they get mounted to the board,
include fixes for both the 45mhz-DialFreq and the 12mhz spurs.
And not be spread across dozens of different posts over the past couple months.

 

 

Re: Ashhar Farhan #ubitx

Bill Robbins
 

Lee:

Did you get anywhere with this?  I looked into parts but it would be dealing with 3-4 different vendors. 

Bill


On Dec 4, 2018, at 1:21 PM, Lee <mr.olson@...> wrote:

Any chance the the QRP Guys would like to put together a bag of parts in the BOM and sell them separately to be added on to the order of a JackAl board?

Hint-Hint.
--
Lee - N9LO  "I Void Warranties"

 

Re: Ashhar Farhan #ubitx

AndyH
 

Hi Ripley,

  Thank you for the clarification!  My intent was to relate to Jerry that the bidirectional RF amps were still stock.  The amp immediately prior to the filter (that used to feed the mixer directly) has a trio of SMD 2N3904s marked Q20, Q21, and Q22 on the V3 schematic.  I didn't see that you'd replaced those with BFR106s yet, though might have missed plenty.  OM Farhan recommended changing R26 and R46 on the stock amps to help reduce distortion - something else for you to test.  hi hi  
https://groups.io/g/BITX20/message/61586

  Is your signal in spec now except for 10 m SSB?

   Thanks again for  your work!
   Best, Andy


On Sun, Dec 9, 2018 at 02:10 PM, Ripley wrote:

Hi Andy,

 

A slight clarification, actually I replaced Q92, Q93, Q96, Q97 with 2N2222A and the emitter resistors along with Q90 and the change of resistors per Allison’s recommendation First. Then checked for effect in evening out the power across the bands. Then I did the 45MHz crystal filter second. Once again checking the before and after results followed by the relay replacement of KT1-KT3. As with the other mods checking the before and after to see if it improved the performance.

 

I haven’t been able to spend much time on the uBITX lately but the next thing that I want to try is replacing L5 and L7 with surface mount inductors per the experiment that Raj tried but I am also going to keep 45MHz crystal filter in circuit. I want to see if those two mods together will reduce those pesky spurs on 10 meter SSB further.

 

Ripley

 

Sent from Mail for Windows 10

 

From: AndyH
Sent: Sunday, December 9, 2018 1:42 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Ashhar Farhan #ubitx

 

A number of people are working to meet different thresholds of 'take care'-edness (two more times in print and it's a real word).  A few (probably in a nod to the phase noise wars) are pushing for a standard just shy of unobtanium.  Others are working to meet regulatory requirements.  Ripley, KD8UYQ, found that relays and a 45 MHz crystal/transformer/cap was quite effective.  That's on a board using the stock 3904s for Q20/Q21/Q22 and before Farhan's recent emitter current increase for Q21/Q22.
https://forums.qrz.com/index.php?threads/ubitx-transceiver-semi-kit-build.624098/page-7#post-4792444

Thanks for pointing out Farhan's recent post about current production boards.  That's a curious statement and one that reverses two previous posts that make clear that the relays had been updated and that fixes are added to production on the fly.  I guess I'll "have" to order another one after the holidays and see what's different.

Interesting on needing to match the 45 MHz filters.  After enjoying the process of matching crystals for my in-progress scratch build, it might be interesting to check the 45 MHz filters I purchased from AliExpress and Mini-Kits.  If I recall, the point of the 2nd filter is to remove the "stuff not 45 MHz".  That might mean that a wider variant of the filter would be useful/usable there and might not need to be a narrow filter closely matched to Y1.  TIme to fire-up the Sweeperino, maybe.  Since matched pairs are available, though...
https://www.ebay.com/itm/Tellurian-Technologies-45MHz-Crystal-Bandpass-Filter-T45U15BG-Matched-Pair/181956516605?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

73, Andy, KG5RKP


On Wed, Dec 5, 2018 at 10:34 PM, Jerry Gaffke wrote:

I don't see a post yet that clearly spells out how to take care of the spurs.
This should include pointers to specific parts, show how they get mounted to the board,
include fixes for both the 45mhz-DialFreq and the 12mhz spurs.
And not be spread across dozens of different posts over the past couple months.

 

 

Re: Ashhar Farhan #ubitx

Ripley
 

Hi Andy,

 

A slight clarification, actually I replaced Q92, Q93, Q96, Q97 with 2N2222A and the emitter resistors along with Q90 and the change of resistors per Allison’s recommendation First. Then checked for effect in evening out the power across the bands. Then I did the 45MHz crystal filter second. Once again checking the before and after results followed by the relay replacement of KT1-KT3. As with the other mods checking the before and after to see if it improved the performance.

 

I haven’t been able to spend much time on the uBITX lately but the next thing that I want to try is replacing L5 and L7 with surface mount inductors per the experiment that Raj tried but I am also going to keep 45MHz crystal filter in circuit. I want to see if those two mods together will reduce those pesky spurs on 10 meter SSB further.

 

Ripley

 

Sent from Mail for Windows 10

 

From: AndyH
Sent: Sunday, December 9, 2018 1:42 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Ashhar Farhan #ubitx

 

A number of people are working to meet different thresholds of 'take care'-edness (two more times in print and it's a real word).  A few (probably in a nod to the phase noise wars) are pushing for a standard just shy of unobtanium.  Others are working to meet regulatory requirements.  Ripley, KD8UYQ, found that relays and a 45 MHz crystal/transformer/cap was quite effective.  That's on a board using the stock 3904s for Q20/Q21/Q22 and before Farhan's recent emitter current increase for Q21/Q22.
https://forums.qrz.com/index.php?threads/ubitx-transceiver-semi-kit-build.624098/page-7#post-4792444

Thanks for pointing out Farhan's recent post about current production boards.  That's a curious statement and one that reverses two previous posts that make clear that the relays had been updated and that fixes are added to production on the fly.  I guess I'll "have" to order another one after the holidays and see what's different.

Interesting on needing to match the 45 MHz filters.  After enjoying the process of matching crystals for my in-progress scratch build, it might be interesting to check the 45 MHz filters I purchased from AliExpress and Mini-Kits.  If I recall, the point of the 2nd filter is to remove the "stuff not 45 MHz".  That might mean that a wider variant of the filter would be useful/usable there and might not need to be a narrow filter closely matched to Y1.  TIme to fire-up the Sweeperino, maybe.  Since matched pairs are available, though...
https://www.ebay.com/itm/Tellurian-Technologies-45MHz-Crystal-Bandpass-Filter-T45U15BG-Matched-Pair/181956516605?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

73, Andy, KG5RKP


On Wed, Dec 5, 2018 at 10:34 PM, Jerry Gaffke wrote:

I don't see a post yet that clearly spells out how to take care of the spurs.
This should include pointers to specific parts, show how they get mounted to the board,
include fixes for both the 45mhz-DialFreq and the 12mhz spurs.
And not be spread across dozens of different posts over the past couple months.

 

Re: 2nd 45MHz filter - Power loss

Woody
 

TNX for the suggestions...
Values are with RV1 adjusted to near maximum power.  Reach max before end of pot travel.
FWIW, I have substituted the factory 45 MHz xtal filter with one of the two Tellurian units I have.  The other Tellurian is the second filter addition.  They said matched, but..??
Without major surgery, couldn't get a 15 pf across just the filter.  Tried across the whole xformer/filter assembly.  Not a significant change...
Have most all the other spur / harmonic mods in place.  Trying to decide to leave it a very QRP TX, or put the 47 resistor back and get my 10+ watts back.....

Woody
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On 12/9/2018 18:33, ajparent1/KB1GMX wrote:
Woody,

Yes but....  Did you try resetting RV1 to regain some of the power?

Also testing I did showed that for some filters the center frequency was
not nearly as offset as others as Mine and two other were closer to 45mhz than
stated and implemented in the Raduino firmware.  The result is adding a second
filter can have you down the band pass skirt and less power.

Try a small amount of C say 10 to 15pf across the filter input and output to "tune it".

Allison
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