Re: Holiday and Pixie 20m kit
Adam,
? Have a great holiday. Hope the weather is beautiful for your time off.?
JP
KA3BWP
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Holiday and Pixie 20m kit
Guys,
May 1 - 5 is a holiday here and I will go for some birding, so shipping will be paused. However, I will ask if someone else will need Pixie 20m kit since I have decided to customize for some customers. If you want it, please order a 40m version and leave your message 20m, and I will ship a 14060 version.
Thanks,
Adam
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Ahh ok Adam, i do have some of those, i shall give it a try. Cant remember what the cutoff frequency?was for those, think its 500Mhz. Before i was experimenting in class E with mofets, i couldnt get reliable results with transistors. Maybe it was my loading coil not right. Thanks again for your work on this. 6m is the only band i have nothing for. There are no kits apart from the six box. Would be cool to see some activity in this area of our bands with qrp.
Nigel ZL1NAY?
Best Regards,
Nigel Young
Hi Nigel,
I didn't use the through hole part. Instead, I used the C3357 SMD
which is ideal for 5V.
Thanks,
Adam
在 2025/4/28 1:15, Nigel Young ZL1NAY
via 写道:
Well done Adam, I was considering doing the same with my
original board.
I would be interested to know which transistors
you tried for the finals. I can't think of any small package
through hole that would push 150mw at vhf, i did do some
experiments using CB radio finals in class E driving it with a
sig gen. Didnt get as far as a filter though.
Nigel ZL1NAY?
Best Regards,
Nigel Young
Guys,
I did some experiments to convert ADT to 6m and the
result was very positive. With a modified filter board, I
got near 150mW output which is not bad. The filter is
simple but effective.
--
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Hi Nigel,
I didn't use the through hole part. Instead, I used the C3357 SMD
which is ideal for 5V.
Thanks,
Adam
在 2025/4/28 1:15, Nigel Young ZL1NAY
via groups.io 写道:
toggle quoted message
Show quoted text
Well done Adam, I was considering doing the same with my
original board.
I would be interested to know which transistors
you tried for the finals. I can't think of any small package
through hole that would push 150mw at vhf, i did do some
experiments using CB radio finals in class E driving it with a
sig gen. Didnt get as far as a filter though.
Nigel ZL1NAY?
Best Regards,
Nigel Young
Guys,
I did some experiments to convert ADT to 6m and the
result was very positive. With a modified filter board, I
got near 150mW output which is not bad. The filter is
simple but effective.
--
|
Well done Adam, I was considering doing the same with my original board. I would be interested to know which transistors you tried for the finals. I can't think of any small package through hole that would push 150mw at vhf, i did do some experiments using CB radio finals in class E driving it with a sig gen. Didnt get as far as a filter though.
Nigel ZL1NAY?
Best Regards,
Nigel Young
Guys,
I did some experiments to convert ADT to 6m and the result was very positive. With a modified filter board, I got near 150mW output which is not bad. The filter is simple but effective.
--
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Re: pixie net on last wednesday of every month
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Re: CPK-1 2023 output power
Thank you very much! I appreciate
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Guys,
I did some experiments to convert ADT to 6m and the result was very positive. With a modified filter board, I got near 150mW output which is not bad. The filter is simple but effective.
--
|
Re: CPK-1 2023 output power
Patrick,
See this post for 20m mod.
Thank you for your reply. I did use two 20dB attenuators while doing the measurements. Ok, I will try to change the transistor and power the Pixie with 12V.?
Meanwhile I was looking for informations to convert the Pixie to the 20m band. I found a blog but there is a different Pixie model in use. Do you have any suggestions?
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Re: CPK-1 2023 output power
Thank you for your reply. I did use two 20dB attenuators while doing the measurements. Ok, I will try to change the transistor and power the Pixie with 12V.?
Meanwhile I was looking for informations to convert the Pixie to the 20m band. I found a blog but there is a different Pixie model in use. Do you have any suggestions?
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Re: CPK-1 2023 output power
Hi Patrick,
I have replied your comments to my video. Your result is very normal.?My tinySA shows -19.7dBm because I have attached a -40dBc attenuator. To increase the output, you can consider replacing the final transistor to 2N3886 or similar, or simply increase the voltage of the power supply to 12V.
Thanks, Adam
Hello everyone!
?
Just finished my first Pixie built. I checked the output with my tinySA ultra. The Pixie produces an output power of 22dBm (about 15mW) and is stable at a frequency of 7.03MHz with my chosen crystal. I used a 9V block battery fully charged while measuring. I think this is a little bit too low. In Adam Rongs built video on YT he got an output of 29dBm (so about 800mW). Any suggestions?
?
Thanks for your replies
?
73 de OE8ZZZ - Patrick
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Hello everyone!
?
Just finished my first Pixie built. I checked the output with my tinySA ultra. The Pixie produces an output power of 22dBm (about 15mW) and is stable at a frequency of 7.03MHz with my chosen crystal. I used a 9V block battery fully charged while measuring. I think this is a little bit too low. In Adam Rongs built video on YT he got an output of 29dBm (so about 800mW). Any suggestions?
?
Thanks for your replies
?
73 de OE8ZZZ - Patrick
|
Re: R3500D factory built kit
The kit price 39 USD included shipping around 9 USD.
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Show quoted text
在 2025年4月17日，07:44，Larry Lovell via groups.io <larry.lovell76@...> 写道：
? How much for the factory built unit?? It shows $40 but your kit on the website is also $40. At $40 I would like one. Guys,
Read this:
If you want the factory built kit, please let me know.
Thanks,
Adam
-- Larry Lovell
73's N7RGW Cell: 214-697-1729
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Re: R3500D factory built kit
How much for the factory built unit?? It shows $40 but your kit on the website is also $40. At $40 I would like one.
Guys,
Read this:
If you want the factory built kit, please let me know.
Thanks,
Adam
-- Larry Lovell
73's N7RGW Cell: 214-697-1729
|
Guys,
Read this:
If you want the factory built kit, please let me know.
Thanks,
Adam
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I have added Euro into PayPal currency
Guys,
So if you make payment in Euros, I can directly accept in my PayPal now. Now you can calculate the price in Euro = 0.88 times the price in USD.
Thanks,
Adam
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Re: ADT Problem transmitting using a smartphone
I could fix the problem. Testing the ADT with an iPhone I measured the audio output, which was much higher than using the smartphone. So I was looking for a way to get a louder audio signal with my smartphone. In the settings I could deaktivate the Dolby sound and equilizer. Now I get an audio level very closed to the iPhone. It works?
?
0.5V in the Peak of the audio. Enough for a clear tx.?
?
73 de Matt
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yes, this was the radio of my mother in law, who passed away many years ago :(
?
73 de Matt
?
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Re: ADT Problem transmitting using a smartphone
Hi Adam,
?
I made a test using a cheap oszilloscope. When I transmit with audio from the pc, the Input is much higher than using the Huawai P30 smartphone. Reduction of the audio level using the pc, the result is the same as with my smartphone. as you mentioned. The vox setup is maybe to high.? Seems to be the same Input in the ADX-S and ADT, but I dont have any problems with my ADX-S using the smartphone.?
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JP McGinley
Larry Lovell
