Date   
Re: Just back from Japan Ham Fair

py1ahd
 

Hello Adam,

Japan Ham Fair is a unique experience.

Tokyo Ham Show 2015 was a land mark om my Ham Life.

1) "PY1AHD Coke Loop" exhibited at MLA 48 Hams Group.

https://www.youtube.com/watch?v=gaJlrN3cElo

2) The AlexLoop in demonstration for the first time on JACOM booth

3) The AlexLoop in exhibition beside the YAESU FT817 on YAESU booth.

https://www.youtube.com/watch?v=khzM-9Xt0MI

I follow with great interest your excelent work Adam.

73 to all

PY1AHD ALEX

Alexandre Grimberg

 

 

 

Em 01/09/2019 19:44, Adam Rong escreveu:

Folks,

The first time to join Japan Ham Fair. Really enjoyed it. I hope you can share my fun by reading these two posts.
https://mp.weixin.qq.com/s/jKD-XuBDnhEvp2saCvbUHA
https://mp.weixin.qq.com/s/5QRu50Ovw4QgJAZyEJB0cQ

--
Thanks,
Adam Rong

Re: Just back from Japan Ham Fair

qrpjl1kra
 

Hi Alex

I am one of Alexloop user in Japan from early stage through direct purchase from you.
For make sure of the first introduction of the Alexloop in Japan and
respect to effort to its introduction,

it was done in 2013 at the QRP Village booth by JA8CCL Mr. Kinoshita.

In spite of his main radio equipment business,
this year he devoted entirely explain the goodness of loop antenna technology.
I supported him and explained my real QSO experience. 

Later, other importers grabbed the item and they are handling as one of their various importing products.
Once I considered to buy another one but it was too expensive to buy. Hihi

Junichi JL1KRA

----- Original Message -----
From: py1ahd <py1ahd@...>
To: crkits@groups.io
Date: 2019/9/2, Mon 09:29
Subject: Re: [crkits] Just back from Japan Ham Fair

Hello Adam,
Japan Ham Fair is a unique experience.
Tokyo Ham Show 2015 was a land mark om my Ham Life.
1) "PY1AHD Coke Loop" exhibited at MLA 48 Hams Group.
https://www.youtube.com/watch?v=gaJlrN3cElo
2) The AlexLoop in demonstration for the first time on JACOM booth
3) The AlexLoop in exhibition beside the YAESU FT817 on YAESU booth.
https://www.youtube.com/watch?v=khzM-9Xt0MI
I follow with great interest your excelent work Adam.
73 to all
PY1AHD ALEX
Alexandre Grimberg
 
 
 
Em 01/09/2019 19:44, Adam Rong escreveu:
Folks,

The first time to join Japan Ham Fair. Really enjoyed it. I hope you can share my fun by reading these two posts.
https://mp.weixin.qq.com/s/jKD-XuBDnhEvp2saCvbUHA
https://mp.weixin.qq.com/s/5QRu50Ovw4QgJAZyEJB0cQ

--
Thanks,
Adam Rong


Introduction to IC-705 by Japanese YL in English

Adam Rong
 

Folks,

The young lady speaks fluent English and she does know about ham radio. The video is recorded by my iPhone in Japan Ham Fair. Enjoy!

http://mp.weixin.qq.com/s/vdZSLsstiFEqqEf7FdkQCA


Thanks,
Adam

FT8 1500/3000

Charles Jessee
 

My CRKits D4D-20m is up and running! I’m using my G5RV antenna 150ft from my house and getting spots in NH (Northeast USA) all the way out to Texas and California - pretty good on what must be 10s of milliWatts emitted.

I see strong constant signals at exactly 1500 and 3000 on FT8 RX. What might those be and can I suppress them?

Thanks for an excellent kit! I’ll get that portable on my Raspberry Pi 4B soon.

Bret/N4SRN

Re: New shipping rule

Charles Jessee
 

My CRKits D4D arrived in a week to NH, USA but my RaspPi 4B took 2 weeks from Canada!
Bret/N4SRN

Re: FT8 1500/3000

Adam Rong
 

Bret,

Congratulations on the success of building the kit. The strong signal you see on the spectrum is called Intermodulation Distortion (IMD). It is mainly caused by over driving the mixer stage. For the simplicity, let's stay with it but you can improve it by changing C5 from 104 to 105.

Thanks,
Adam

Re: New shipping rule

Adam Rong
 

Bret,

It is quite fast considering it is not express shipping. I visited New England about 10 years ago when I was working for Sun Microsystems Inc. I did visit the HRO store in Salem and enjoyed the visit there.

Thanks,
Adam

D4D

tem494@...
 

I also have just finished the kit did a set up with dummy load and put it on the air.
Receiving signals from all over have only made a few contacts with it but Antenna is located in the attic and had a learning curve with the software.
Great little kit would recommend it to anyone that enjoys kit building and wants to try FT8.

Re: Just back from Japan Ham Fair

py1ahd
 

Hello Junichi-san,

I am very sorry in forget the pioneer demonstration of Mr. Kinoshita on Japan Ham Fair 2013

and I remember cjearly now his efforts to introduce for the very first time the AlexLoop in Japan.

By the way, in 2014 Kogure-san from MLA 48 have made a AlexLoop presentation either in Japan Ham Show.

Please send in private to my e-mail if possible more information about Mr. Kinochita participation in order

to express my thanks.

PY1AHD ALEX

Alexandre Grimberg

py1ahd@...

P.S. I can make a try with the local Japan dealer to find

out for a better price on your new AlexLoop

 

 

 

Em 02/09/2019 13:27, qrpjl1kra escreveu:

Hi Alex
 
I am one of Alexloop user in Japan from early stage through direct purchase from you.
For make sure of the first introduction of the Alexloop in Japan and
respect to effort to its introduction,
 
it was done in 2013 at the QRP Village booth by JA8CCL Mr. Kinoshita.
 
In spite of his main radio equipment business,
this year he devoted entirely explain the goodness of loop antenna technology.
I supported him and explained my real QSO experience. 
 
Later, other importers grabbed the item and they are handling as one of their various importing products.
Once I considered to buy another one but it was too expensive to buy. Hihi
 
Junichi JL1KRA
 
----- Original Message -----
From: py1ahd <py1ahd@...>
To: crkits@groups.io
Date: 2019/9/2, Mon 09:29
Subject: Re: [crkits] Just back from Japan Ham Fair

Hello Adam,
Japan Ham Fair is a unique experience.
Tokyo Ham Show 2015 was a land mark om my Ham Life.
1) "PY1AHD Coke Loop" exhibited at MLA 48 Hams Group.
https://www.youtube.com/watch?v=gaJlrN3cElo
2) The AlexLoop in demonstration for the first time on JACOM booth
3) The AlexLoop in exhibition beside the YAESU FT817 on YAESU booth.
https://www.youtube.com/watch?v=khzM-9Xt0MI
I follow with great interest your excelent work Adam.
73 to all
PY1AHD ALEX
Alexandre Grimberg
 
 
 
Em 01/09/2019 19:44, Adam Rong escreveu:
Folks,

The first time to join Japan Ham Fair. Really enjoyed it. I hope you can share my fun by reading these two posts.
https://mp.weixin.qq.com/s/jKD-XuBDnhEvp2saCvbUHA
https://mp.weixin.qq.com/s/5QRu50Ovw4QgJAZyEJB0cQ

--
Thanks,
Adam Rong


Re: D4D

Adam Rong
 

Thanks for sharing your experience. Considering the small size and low power consumption, field operations with raspberry pi is recommended. Autumn is coming and let’s go outside!

Thanks,
Adam

在 2019年9月3日,上午8:35,tem494@... 写道:

I also have just finished the kit did a set up with dummy load and put it on the air.
Receiving signals from all over have only made a few contacts with it but Antenna is located in the attic and had a learning curve with the software.
Great little kit would recommend it to anyone that enjoys kit building and wants to try FT8.

Re: FT8 1500/3000

Charles Jessee
 

Hi Adam,

I did the C5 105 addition in my build. Fortunately the IMD isn't too strong and WSJT-X can decode within 100 of the signals.I got my st QSO at 1235km on CQafter dark here - I'll spread the work about the nice kits and support.

BRET/N4SRN

Re: D4D

Charles Jessee
 

What’s a good battery system to run a RasPi4B and CRKits D4D?

Bret/N4SRN

Re: D4D

tem494@...
 

I just picked up a 12 volt lithium ion battery pack from Amazon it is rated at 12 volt 11000 mAh. The size is just a little bit bigger then the D4D.
The battery comes with charger connecting cables. Output is 12 9 and USB ports. Cost for this capacity was 64.95 they also have various sizes. The unit is sold by Talent Cell.

Tom
K0amd


On Sep 3, 2019, at 4:21 PM, Charles Jessee <cbjesseeNH@...> wrote:

What’s a good battery system to run a RasPi4B and CRKits D4D?

Bret/N4SRN

Re: D4D

Adam Rong
 

My solution is a dual output (12 and 5V) Li-Ion battery pack similar size of D4D. Let me know if you guys are interested as it needs special shipping. The freight is higher.
image1.jpeg

Thanks,
Adam

在 2019年9月4日,上午5:38,tem494@... 写道:

I just picked up a 12 volt lithium ion battery pack from Amazon it is rated at 12 volt 11000 mAh. The size is just a little bit bigger then the D4D.
The battery comes with charger connecting cables. Output is 12 9 and USB ports. Cost for this capacity was 64.95 they also have various sizes. The unit is sold by Talent Cell.

Tom
K0amd


On Sep 3, 2019, at 4:21 PM, Charles Jessee <cbjesseeNH@...> wrote:

What’s a good battery system to run a RasPi4B and CRKits D4D?

Bret/N4SRN

Operation under emergency conditions

Dr. Pedro E. Colla (LU7DID)
 

Adam,
 
In a bare bones emergency situation to which extend the D4D works with a high capacity 5V pack as it's sole power supply? (assume connectors worked out properly).
 
¿Does the D4D work with less performance/power? ¿Works very degraded? ¿Doesn't work at all?
 
Thanks for your answer. 
 
73 de Pedro, LU7DID
 

Re: Operation under emergency conditions

Adam Rong
 

Hi LU7DID,

If you really need to work at 5V, it is recommended to replace 78L05 by a LDO type 5V regulator.

For the TX amplifier, the output can be as low as 100-200mW if you power with 5V. You can test it.

Thanks,
Adam

在 2019年9月4日,下午8:04,Dr. Pedro E. Colla (LU7DID) <lu7did@...> 写道:

Adam,
 
In a bare bones emergency situation to which extend the D4D works with a high capacity 5V pack as it's sole power supply? (assume connectors worked out properly).
 
¿Does the D4D work with less performance/power? ¿Works very degraded? ¿Doesn't work at all?
 
Thanks for your answer. 
 
73 de Pedro, LU7DID
 

Re: Operation under emergency conditions

Dr. Pedro E. Colla (LU7DID)
 

Thank you!

D4D receive light only activates during transmit

Steve Goyette
 

Hi,

I've built the 20m version of the D4D kit and when I connect it both lights come on then both lights go off after 1 second.  Plugging into a computer I get received signals that are properly decoded and the green light WILL come on along with the amber light when transmitting (VOX activated) but once transmit is complete both lights go out.

Any ideas what I should check?

Thanks,

Steve

Re: D4D receive light only activates during transmit

Adam Rong
 

Steve,

Please show me close look pictures of both sides.

Thanks,
Adam

Re: D4D receive light only activates during transmit

Steve Goyette
 

Hi Adam,

Here you go: