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uSDX

Jack, W8TEE
 

I get the "green" emphasis, but part of me wonders "why" when it comes to a transceiver. Yes, I do understand SOTA, POTA, IOTA, and the other OTA's and I indeed hope to be a part of that this summer, but is that why we are so obsessed with current draw? If the idea is an xcvr that you can throw in the trunk for a vacation trip, if it draws 3A on xmit, why isn't that acceptable? The SDT Al and I are working on draws 0.7A on receive, but to me that's acceptable for a receiver with a 5" display. Where's the balance point between the feature set and power consumption? Clearly, whatever that balance point, it's going to be different based on your planned use.

Jack, W8TEE

On Tuesday, June 1, 2021, 8:01:39 AM EDT, Bob Benedict, KD8CGH <rkayakr@...> wrote:


There is an effort to port the code to a Pico Pi which has dual cores and much better capabilities, but is still a controller and much less power hungry than other Pi models.
/g/ucx/message/6950
--
? 73
??? Bob? KD8CGH

--
Jack, W8TEE
 

¿ªÔÆÌåÓý

Jack,

You should go spend some time on the FT-817/818 mail list - they obsess down to the smallest detail for saving power, to the point where it is considered "wasteful" to use a particular antenna Jack, because doing so causes an internal relay to be energized all the time, consuming 3ma! How wasteful!

Ken, N2VIP

On Jun 1, 2021, at 09:43, Jack, W8TEE via groups.io <jjpurdum@...> wrote:

?
I get the "green" emphasis, but part of me wonders "why" when it comes to a transceiver. Yes, I do understand SOTA, POTA, IOTA, and the other OTA's and I indeed hope to be a part of that this summer, but is that why we are so obsessed with current draw? If the idea is an xcvr that you can throw in the trunk for a vacation trip, if it draws 3A on xmit, why isn't that acceptable? The SDT Al and I are working on draws 0.7A on receive, but to me that's acceptable for a receiver with a 5" display. Where's the balance point between the feature set and power consumption? Clearly, whatever that balance point, it's going to be different based on your planned use.

Jack, W8TEE

On Tuesday, June 1, 2021, 8:01:39 AM EDT, Bob Benedict, KD8CGH <rkayakr@...> wrote:


There is an effort to port the code to a Pico Pi which has dual cores and much better capabilities, but is still a controller and much less power hungry than other Pi models.
/g/ucx/message/6950
--
? 73
??? Bob? KD8CGH

--
Jack, W8TEE

Jack, W8TEE
 

Mornin' Ken:

Yep, and I get that if you're hiking 10 miles up a vertical cliff to a place where you have to carry in your own antenna mast to get the EFHW off the ground. That's their "thing" and that's fine. But for those of us who find that a nice brisk walk to the mailbox satisfies the day's need for hiking, our demands are very different. And therein is the beauty of this hobby: Both are correct!

Enjoy whatever floats your boat!

Jack, W8TEE

On Tuesday, June 1, 2021, 9:59:03 AM EDT, Ken Hansen <ken@...> wrote:


Jack,

You should go spend some time on the FT-817/818 mail list - they obsess down to the smallest detail for saving power, to the point where it is considered "wasteful" to use a particular antenna Jack, because doing so causes an internal relay to be energized all the time, consuming 3ma! How wasteful!

Ken, N2VIP

On Jun 1, 2021, at 09:43, Jack, W8TEE via groups.io <jjpurdum@...> wrote:

?
I get the "green" emphasis, but part of me wonders "why" when it comes to a transceiver. Yes, I do understand SOTA, POTA, IOTA, and the other OTA's and I indeed hope to be a part of that this summer, but is that why we are so obsessed with current draw? If the idea is an xcvr that you can throw in the trunk for a vacation trip, if it draws 3A on xmit, why isn't that acceptable? The SDT Al and I are working on draws 0.7A on receive, but to me that's acceptable for a receiver with a 5" display. Where's the balance point between the feature set and power consumption? Clearly, whatever that balance point, it's going to be different based on your planned use.

Jack, W8TEE

On Tuesday, June 1, 2021, 8:01:39 AM EDT, Bob Benedict, KD8CGH <rkayakr@...> wrote:


There is an effort to port the code to a Pico Pi which has dual cores and much better capabilities, but is still a controller and much less power hungry than other Pi models.
/g/ucx/message/6950
--
? 73
??? Bob? KD8CGH

--
Jack, W8TEE

--
Jack, W8TEE
 

So,
Here are the figures :
1. Raspberry Pi4, with 4.3 inch waveshare screen (800 x 480 pixels, veru readable, like a smartphone), running sbitx = 540 mA. With wsjtx, 650 mA.
2. Rpi 4, with 7 inch display (800x480 px), running only sbitx 700mA, with wsjtx 900mA.


On Tue 1 Jun, 2021, 7:40 PM Jack, W8TEE via , <jjpurdum=[email protected]> wrote:
Mornin' Ken:

Yep, and I get that if you're hiking 10 miles up a vertical cliff to a place where you have to carry in your own antenna mast to get the EFHW off the ground. That's their "thing" and that's fine. But for those of us who find that a nice brisk walk to the mailbox satisfies the day's need for hiking, our demands are very different. And therein is the beauty of this hobby: Both are correct!

Enjoy whatever floats your boat!

Jack, W8TEE

On Tuesday, June 1, 2021, 9:59:03 AM EDT, Ken Hansen <ken@...> wrote:


Jack,

You should go spend some time on the FT-817/818 mail list - they obsess down to the smallest detail for saving power, to the point where it is considered "wasteful" to use a particular antenna Jack, because doing so causes an internal relay to be energized all the time, consuming 3ma! How wasteful!

Ken, N2VIP

On Jun 1, 2021, at 09:43, Jack, W8TEE via <jjpurdum=[email protected]> wrote:

?
I get the "green" emphasis, but part of me wonders "why" when it comes to a transceiver. Yes, I do understand SOTA, POTA, IOTA, and the other OTA's and I indeed hope to be a part of that this summer, but is that why we are so obsessed with current draw? If the idea is an xcvr that you can throw in the trunk for a vacation trip, if it draws 3A on xmit, why isn't that acceptable? The SDT Al and I are working on draws 0.7A on receive, but to me that's acceptable for a receiver with a 5" display. Where's the balance point between the feature set and power consumption? Clearly, whatever that balance point, it's going to be different based on your planned use.

Jack, W8TEE

On Tuesday, June 1, 2021, 8:01:39 AM EDT, Bob Benedict, KD8CGH <rkayakr@...> wrote:


There is an effort to port the code to a Pico Pi which has dual cores and much better capabilities, but is still a controller and much less power hungry than other Pi models.
/g/ucx/message/6950
--
? 73
??? Bob? KD8CGH

--
Jack, W8TEE

--
Jack, W8TEE

 

I thought hard about current consumption. "We are no longer in Kansas". The modern LiPo battery with 3400 mA hours is cheap. At 14.4 volt battery will run sbitx for 5 hours. You can switch off the display to run it for 12 hours. A bigger battery with 5.6 Amp-Hours will still be cheap. The Quadcopters have opened up the battery market.
I stilll prefer to carry my direct conversion radio on weekly family hikes. That draws 25 mA in rx. It is quiet and all analog.
- f

On Tue 1 Jun, 2021, 7:50 PM Ashhar Farhan via , <farhanbox=[email protected]> wrote:
So,
Here are the figures :
1. Raspberry Pi4, with 4.3 inch waveshare screen (800 x 480 pixels, veru readable, like a smartphone), running sbitx = 540 mA. With wsjtx, 650 mA.
2. Rpi 4, with 7 inch display (800x480 px), running only sbitx 700mA, with wsjtx 900mA.


On Tue 1 Jun, 2021, 7:40 PM Jack, W8TEE via , <jjpurdum=[email protected]> wrote:
Mornin' Ken:

Yep, and I get that if you're hiking 10 miles up a vertical cliff to a place where you have to carry in your own antenna mast to get the EFHW off the ground. That's their "thing" and that's fine. But for those of us who find that a nice brisk walk to the mailbox satisfies the day's need for hiking, our demands are very different. And therein is the beauty of this hobby: Both are correct!

Enjoy whatever floats your boat!

Jack, W8TEE

On Tuesday, June 1, 2021, 9:59:03 AM EDT, Ken Hansen <ken@...> wrote:


Jack,

You should go spend some time on the FT-817/818 mail list - they obsess down to the smallest detail for saving power, to the point where it is considered "wasteful" to use a particular antenna Jack, because doing so causes an internal relay to be energized all the time, consuming 3ma! How wasteful!

Ken, N2VIP

On Jun 1, 2021, at 09:43, Jack, W8TEE via <jjpurdum=[email protected]> wrote:

?
I get the "green" emphasis, but part of me wonders "why" when it comes to a transceiver. Yes, I do understand SOTA, POTA, IOTA, and the other OTA's and I indeed hope to be a part of that this summer, but is that why we are so obsessed with current draw? If the idea is an xcvr that you can throw in the trunk for a vacation trip, if it draws 3A on xmit, why isn't that acceptable? The SDT Al and I are working on draws 0.7A on receive, but to me that's acceptable for a receiver with a 5" display. Where's the balance point between the feature set and power consumption? Clearly, whatever that balance point, it's going to be different based on your planned use.

Jack, W8TEE

On Tuesday, June 1, 2021, 8:01:39 AM EDT, Bob Benedict, KD8CGH <rkayakr@...> wrote:


There is an effort to port the code to a Pico Pi which has dual cores and much better capabilities, but is still a controller and much less power hungry than other Pi models.
/g/ucx/message/6950
--
? 73
??? Bob? KD8CGH

--
Jack, W8TEE

--
Jack, W8TEE

 

Hi there,?
? I'll buy a PCB Board, $5.00 plus whatever shipping will be..
Let me know, Paypal OK
73 Ron? W4RWU
 

A Pico Pi is a big step up in capability from the current ATMEGA328.

IMHO the uSDX is more of an exploration of what can be done that any sort of product like the uBITX or QCX. Guido, PE1NNZ, develops the firmware and originally modified a QCX. I haven't seen any other hardware from him.? There are several different uSDX firmware compatible board set designs from different enthusiasts and multiple versions of each. Other enthusiasts have taken on making the PCBs and component kits. The firmware appears to be in a perpetual beta state with the latest change yesterday to V1.02s, while the last "official" release 1.02j was 8 months ago.

--
? 73
??? Bob? KD8CGH
 

Justin¡­. I would like one also. $5 +/ whatever you decide. This looks like a nice project for a solder melt.?
--
Bob
NZ2Z
 

Bob - It was a fun board to build.? I sent you a message.

73,

Justin B.
KI5GKD
 

On Tue, Jun 1, 2021 at 07:29 AM, Ashhar Farhan wrote:
I thought hard about current consumption. "We are no longer in Kansas".
I saw an article a little while back. The article was a comprehensive list of reference sites, articles, books and data that you should clone onto a Raspberry Pi and place in a sealed metal box, so if an apocalypse?happens you have everything you need for reference to start over again. (I suppose you should put a keyboard, some kind of display and versatile power source in there, too.)

This could be a good idea if you are operating from a remote mountain top to use a Raspberry Pi to control your radio so you have everything you need information wise should things go bad while while you are away from civilization. :)

Tom, wb6b
David Alexander
 

¿ªÔÆÌåÓý

where was the list tom

dave k7da


On 6/3/2021 8:05 AM, Tom, wb6b wrote:

On Tue, Jun 1, 2021 at 07:29 AM, Ashhar Farhan wrote:
I thought hard about current consumption. "We are no longer in Kansas".
I saw an article a little while back. The article was a comprehensive list of reference sites, articles, books and data that you should clone onto a Raspberry Pi and place in a sealed metal box, so if an apocalypse?happens you have everything you need for reference to start over again. (I suppose you should put a keyboard, some kind of display and versatile power source in there, too.)

This could be a good idea if you are operating from a remote mountain top to use a Raspberry Pi to control your radio so you have everything you need information wise should things go bad while while you are away from civilization. :)

Tom, wb6b

 

On Thu, Jun 3, 2021 at 08:00 PM, David Alexander wrote:
where was the list tom
I'll see if I can google around and find the article again.

Tom, wb6b
 

Finally got a microphone hooked up to the uSDX this morning and spent the day making contacts!? Slick little radio, for the price, but I like the uBITX better for base station duty. But, once I get it in a box it will be a great little radio to hump back into the weeds and operate POTA!? :-)

73,

Justin B.
KI5GKD
 

On Sat, Jun 5, 2021 at 08:34 AM, Tom, wb6b wrote:
I'll see if I can google around and find the article again.
HI,

I have not found anything that looks like the original article I read.

However, if you are stranded on an island and you feel confident in the information you may find on Wikipedia on building a boat, it looks like you can download a copy to keep with you, with only 83GB of storage. Don't know if that is only the text or if the images are included.



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wikipedia (English) en 83G 2021-03 all maxi
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Tom, wb6b

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