Date   

Re: No TX

Carl Weiberg
 

I build both the D4D 20 and 40 meter rigs. Both did not work well at all. The 20 meter tx had 200 mw output. Pretty useless in my opinion. The 40 worked a couple times then replaced relay and transistors. I could not fix it. I decided to give up on the rigs. Fun to build but not functional on TX. RX was ok.

73’s

 iPad Mahalo


On Jun 30, 2021, at 10:33 AM, craig.jump via groups.io <craig.jump@...> wrote:



I have just built  D4D 20m kit..

Receiving well, but just not getting any replies.. 

Relay clicks ok..     have changed the output transistor. (BD139). and voltages on it on TX are as follows..

B - 0.892v
C - 11.82v
E - 0.291v

I dont have a scope to test, but kinda looks like its tx'ing...   but not sure

 

Anything else I should check ?

Many Thanks
craig
2M0JUM


--
CW


Re: No TX

Nigel Young ZL1NAY
 

Check ur timing, swap modes i.e the earlier or later part of the transmission. Don't forget FT8 is based on timing. There are little software widgets that will update your time on the PC a bit more frequently than windows would like. You really need this to sync the conversation. I'm sure your getting out but at the wrong time. You really can't rely on the PC clock to manage it. It needs to be internet or GPS based to work

Kia Kaha

On Thu, Jul 1, 2021, 3:33 AM craig.jump via groups.io <craig.jump=btinternet.com@groups.io> wrote:

I have just built  D4D 20m kit..

Receiving well, but just not getting any replies.. 

Relay clicks ok..     have changed the output transistor. (BD139). and voltages on it on TX are as follows..

B - 0.892v
C - 11.82v
E - 0.291v

I dont have a scope to test, but kinda looks like its tx'ing...   but not sure

 

Anything else I should check ?

Many Thanks
craig
2M0JUM


Re: No TX

Conor Farrell
 

Check pskreporter.info to see if your signal is getting out.

Conor

On Wed 30 Jun 2021, 16:33 craig.jump via groups.io, <craig.jump=btinternet.com@groups.io> wrote:

I have just built  D4D 20m kit..

Receiving well, but just not getting any replies.. 

Relay clicks ok..     have changed the output transistor. (BD139). and voltages on it on TX are as follows..

B - 0.892v
C - 11.82v
E - 0.291v

I dont have a scope to test, but kinda looks like its tx'ing...   but not sure

 

Anything else I should check ?

Many Thanks
craig
2M0JUM


No TX

craig.jump@...
 

I have just built  D4D 20m kit..

Receiving well, but just not getting any replies.. 

Relay clicks ok..     have changed the output transistor. (BD139). and voltages on it on TX are as follows..

B - 0.892v
C - 11.82v
E - 0.291v

I dont have a scope to test, but kinda looks like its tx'ing...   but not sure

 

Anything else I should check ?

Many Thanks
craig
2M0JUM


Re: New design: 13-transistor SSB FT8 transceiver

Satish Chandorkar
 

Thank you Adam Rong 
Thank you for providing the link. I am already a member of groups.io so there was no problem to download the circuit's PDF.
The PCB is nicely designed one

Satish
VU2SNK


On Tuesday, 15 June, 2021, 06:25:16 am IST, Adam Rong <rongxh@...> wrote:


https://groups.io/g/crkits/files/13%20Transistor%2040m%20FT8%20SSB/13TR40m1WFT8SCH.pdf


New progress:


https://mp.weixin.qq.com/s/f3HyeZ1u2TRWGPkxBYGVMQ


Thanks,
Adam

在 2021年6月8日,上午10:59,Satish Chandorkar via groups.io <satish.vu2snk1@...> 写道:


The site provided for information is not accessible from India as due to the COVID crises all China sites are banned for accessing from India. Can any one will download the contents circuit diagram etc. for us ( India ) I am interested   

Satish
VU2SNK 

On Tuesday, 8 June, 2021, 06:28:29 am IST, Nigel Young <multilec@...> wrote:


Also Adam, it would be absolutely fantastic if you could guide us to a manufacturer in China that produce good copies of now defunct transistors. There are many on ebay as you probably know. It would be a good exercise to test them without spending your money and waiting 3 months to arrive to find them defective in an area you are interested in.
I'm not tasking you with this mission, I'm just asking for a China manufacturer who is true to the original specifications.

Nigel

Kia Kaha

On Tue, Jun 8, 2021, 12:41 PM Nigel Young via groups.io <multilec=gmail.com@groups.io> wrote:
Adam, snap to a grid of 0.1 mm if you do a pcb. I'm not sure there will be many takers due to the amount of same frequency crystals which are rarer than unobtanium any where else other than China. This is why there is not much development anywhere else in the world. China can produce crystals on any freq on demand. Western world add $25.

Nigel

Kia Kaha

On Tue, Jun 8, 2021, 10:40 AM Adam Rong <rongxh@...> wrote:
https://mp.weixin.qq.com/s/oa-plPIjFTOemXd9DMiTtg

Introduce the new design unit by unit in English.



Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: New design: 13-transistor SSB FT8 transceiver

Adam Rong
 

在 2021年6月8日,上午10:59,Satish Chandorkar via groups.io <satish.vu2snk1@...> 写道:


The site provided for information is not accessible from India as due to the COVID crises all China sites are banned for accessing from India. Can any one will download the contents circuit diagram etc. for us ( India ) I am interested   

Satish
VU2SNK 

On Tuesday, 8 June, 2021, 06:28:29 am IST, Nigel Young <multilec@...> wrote:


Also Adam, it would be absolutely fantastic if you could guide us to a manufacturer in China that produce good copies of now defunct transistors. There are many on ebay as you probably know. It would be a good exercise to test them without spending your money and waiting 3 months to arrive to find them defective in an area you are interested in.
I'm not tasking you with this mission, I'm just asking for a China manufacturer who is true to the original specifications.

Nigel

Kia Kaha

On Tue, Jun 8, 2021, 12:41 PM Nigel Young via groups.io <multilec=gmail.com@groups.io> wrote:
Adam, snap to a grid of 0.1 mm if you do a pcb. I'm not sure there will be many takers due to the amount of same frequency crystals which are rarer than unobtanium any where else other than China. This is why there is not much development anywhere else in the world. China can produce crystals on any freq on demand. Western world add $25.

Nigel

Kia Kaha

On Tue, Jun 8, 2021, 10:40 AM Adam Rong <rongxh@...> wrote:
https://mp.weixin.qq.com/s/oa-plPIjFTOemXd9DMiTtg

Introduce the new design unit by unit in English.



Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: New design: 13-transistor SSB FT8 transceiver

Satish Chandorkar
 

The site provided for information is not accessible from India as due to the COVID crises all China sites are banned for accessing from India. Can any one will download the contents circuit diagram etc. for us ( India ) I am interested   

Satish
VU2SNK 

On Tuesday, 8 June, 2021, 06:28:29 am IST, Nigel Young <multilec@...> wrote:


Also Adam, it would be absolutely fantastic if you could guide us to a manufacturer in China that produce good copies of now defunct transistors. There are many on ebay as you probably know. It would be a good exercise to test them without spending your money and waiting 3 months to arrive to find them defective in an area you are interested in.
I'm not tasking you with this mission, I'm just asking for a China manufacturer who is true to the original specifications.

Nigel

Kia Kaha

On Tue, Jun 8, 2021, 12:41 PM Nigel Young via groups.io <multilec=gmail.com@groups.io> wrote:
Adam, snap to a grid of 0.1 mm if you do a pcb. I'm not sure there will be many takers due to the amount of same frequency crystals which are rarer than unobtanium any where else other than China. This is why there is not much development anywhere else in the world. China can produce crystals on any freq on demand. Western world add $25.

Nigel

Kia Kaha

On Tue, Jun 8, 2021, 10:40 AM Adam Rong <rongxh@...> wrote:
https://mp.weixin.qq.com/s/oa-plPIjFTOemXd9DMiTtg

Introduce the new design unit by unit in English.



Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: New design: 13-transistor SSB FT8 transceiver

Nigel Young ZL1NAY
 

Also Adam, it would be absolutely fantastic if you could guide us to a manufacturer in China that produce good copies of now defunct transistors. There are many on ebay as you probably know. It would be a good exercise to test them without spending your money and waiting 3 months to arrive to find them defective in an area you are interested in.
I'm not tasking you with this mission, I'm just asking for a China manufacturer who is true to the original specifications.

Nigel

Kia Kaha


On Tue, Jun 8, 2021, 12:41 PM Nigel Young via groups.io <multilec=gmail.com@groups.io> wrote:
Adam, snap to a grid of 0.1 mm if you do a pcb. I'm not sure there will be many takers due to the amount of same frequency crystals which are rarer than unobtanium any where else other than China. This is why there is not much development anywhere else in the world. China can produce crystals on any freq on demand. Western world add $25.

Nigel

Kia Kaha

On Tue, Jun 8, 2021, 10:40 AM Adam Rong <rongxh@...> wrote:
https://mp.weixin.qq.com/s/oa-plPIjFTOemXd9DMiTtg

Introduce the new design unit by unit in English.



Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: New design: 13-transistor SSB FT8 transceiver

Nigel Young ZL1NAY
 

Adam, snap to a grid of 0.1 mm if you do a pcb. I'm not sure there will be many takers due to the amount of same frequency crystals which are rarer than unobtanium any where else other than China. This is why there is not much development anywhere else in the world. China can produce crystals on any freq on demand. Western world add $25.

Nigel

Kia Kaha


On Tue, Jun 8, 2021, 10:40 AM Adam Rong <rongxh@...> wrote:
https://mp.weixin.qq.com/s/oa-plPIjFTOemXd9DMiTtg

Introduce the new design unit by unit in English.



Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: New design: 13-transistor SSB FT8 transceiver

Adam Rong
 

https://mp.weixin.qq.com/s/oa-plPIjFTOemXd9DMiTtg

Introduce the new design unit by unit in English.



Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: Any future CW kits?

Christopher Leslie
 

Thanks for the update Adam.  The HT-1 has been a fantastic little rig.   It was my only communication during a bad winter storm when our electricity and phone/internet was out.   I'll check in from time to time to see if you come out with a cw rig again.

73
Chris W5OTR 



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: Adam Rong <rongxh@...>
Date: 5/29/21 18:57 (GMT-06:00)
To: crkits@groups.io
Subject: Re: [crkits] Any future CW kits?

I don’t have plan for a new CW kit in the near future. However, the CRK-10A can be back easily when it is required.

Thanks,
Adam

在 2021年5月28日,上午2:15,Christopher Leslie via groups.io <chrisrleslie@...> 写道:



Any future kits planned for CW ops?


Sent from my Verizon, Samsung Galaxy smartphone



Re: New design: 13-transistor SSB FT8 transceiver

Adam Rong
 

Currently the stock is empty. I will let you know know once it is available again.

Thanks,
Adam

在 2021年5月30日,上午9:11,Adam Rong via groups.io <rongxh@...> 写道:

Check out the video for a real QSO with DS2 station.


The schematic is now in the file section as you may have noticed.

It could be a kit but it won’t replace D4D as I mentioned before.

Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: New design: 13-transistor SSB FT8 transceiver

Adam Rong
 

Check out the video for a real QSO with DS2 station.


The schematic is now in the file section as you may have noticed.

It could be a kit but it won’t replace D4D as I mentioned before.

Thanks,
Adam

在 2021年5月24日,上午10:02,Adam Rong <rong@...> 写道:


Folks,

It’s been a while. I wish to present the recent design. The only semiconductors are 13 piece 2N4401 and a few diodes. The output is 1 watt SSB and it is a practical number for 40m FT8. Still long time to finalize the design.
<image0.jpeg>



Re: File /13 Transistor 40m FT8 SSB/13TR40m1WFT8SCH.pdf uploaded #file-notice

Foxy Fox
 

You are right! It's past midnight for me and I wasn't paying attention. I have small eyes ... ;-)
J3 is the microphone connector and J1 is the headphone connector.


Re: Any future CW kits?

Adam Rong
 

I don’t have plan for a new CW kit in the near future. However, the CRK-10A can be back easily when it is required.

Thanks,
Adam

在 2021年5月28日,上午2:15,Christopher Leslie via groups.io <chrisrleslie@...> 写道:



Any future kits planned for CW ops?


Sent from my Verizon, Samsung Galaxy smartphone



Re: File /13 Transistor 40m FT8 SSB/13TR40m1WFT8SCH.pdf uploaded #file-notice

Adam Rong
 

Hi Fox,

The Q3 is a receiver audio amplifier.

Thanks,
Adam

在 2021年5月30日,上午7:46,Foxy Fox <7878fox@...> 写道:


We thank you!

I don't understand the configuration of transistor Q3.
Installation with common emitter ...
Can you explain it?
Thank you!

--
Fox


File /13 Transistor 40m FT8 SSB/13TR40m1WFT8SCH.pdf uploaded #file-notice

Foxy Fox
 

We thank you!

I don't understand the configuration of transistor Q3.
Installation with common emitter ...
Can you explain it?
Thank you!

--
Fox


File /13 Transistor 40m FT8 SSB/13TR40m1WFT8SCH.pdf uploaded #file-notice

crkits@groups.io Notification <noreply@...>
 

The following files have been uploaded to the Files area of the crkits@groups.io group.

By: Adam Rong <rongxh@...>

Description:
13 Transistor 40m FT8 SSB Transceiver Schematic, Preliminary Version


Any future CW kits?

Christopher Leslie
 


Any future kits planned for CW ops?


Sent from my Verizon, Samsung Galaxy smartphone



Re: New design: 13-transistor SSB FT8 transceiver

Bangholyo
 

i cant seem to place an order in site for d4d js8


On Thu, May 27, 2021, 11:31 PM terry hughes via groups.io <terryhugheskirkcudbright=yahoo.co.uk@groups.io> wrote:
hi adam

the d4d went together very easily and is working well on 20 m

i am thinking of building another for 80 m

i already have the crystals so can you give me a price for an 80 m version less crystals

terry gm4dso



On Wednesday, 26 May 2021, 23:11:51 BST, Adam Rong <rongxh@...> wrote:


No. This is the result of a design challenge. It is 40m only due to crystal. It is more complicated than D4D.

Thanks,
Adam

在 2021年5月25日,下午2:12,Pierre FK8IH <jb.gallauziaux@...> 写道:

Is it planned to replace the D4D?
73 - Pierre - FK8IH

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