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Author Topic: To SDR or not! That is the question!  (Read 20491 times)
K0OD
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« Reply #15 on: November 19, 2012, 11:07:24 AM »

Quote
Wow, put the board in the oven!

That post stopped me in my tracks too.  Hey, I can do TV dinners! My wife's going to wonder about me. Last year I repainted the cover of a boatanchor cabinet and dried it in the oven (turned out gorgeous).

There's ton of great video on YouTube about modern electronics construction techniques. Several soldering courses, as I recall.
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NK7Z
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« Reply #16 on: November 19, 2012, 11:37:02 AM »

I can solder I just need to be able to see the part.  Putting a board in the oven implies that the parts are very very tiny.  Much more than I want to solder. 
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Dave
For reviews and setups see: http://www.nk7z.net
K0OD
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« Reply #17 on: November 19, 2012, 01:09:57 PM »

The Ensemble parts list shows about 150 pieces from my very rough count.

The "simple" $130 Oak Hills QRP kit my son and I built had about 305 parts and it took about 20 hours. I counted them to see how modern kits compared with the old Heath stuff I built years ago. As I recall a 1957 vintage DX-20, for example, had far fewer parts.

Ignoring the SMD aspect Smiley, the Ensemble II is a fairly small project. Why don't you build it and report back. We'll cheer you on! I'm tempted to try something like it. Would require some upgrading of the workshop for SMD. That might also be a good test for my cataract operation coming up.

http://fivedash.com/  
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NK7Z
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« Reply #18 on: November 19, 2012, 09:44:55 PM »

I looked carefully at the bottom of the PCB...  Lots of SMD, I think I will get a pre-built kit...  Should order in the next few days...

73's
Dave
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Dave
For reviews and setups see: http://www.nk7z.net
W6UV
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« Reply #19 on: November 19, 2012, 10:37:12 PM »

I find SMD boards easier and faster to assemble than their through-hole counterparts.

I have no special equipment beyond a syringe of solder paste and a $25 toaster oven.
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NK7Z
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« Reply #20 on: November 19, 2012, 11:10:29 PM »

The concept of putting a PCB in a toaster oven is novel...  I understand, but my eyes are not all that great anymore... 
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Dave
For reviews and setups see: http://www.nk7z.net
K0OD
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« Reply #21 on: November 20, 2012, 12:08:12 AM »

Quote
Should order in the next few days...

Especially if you're getting the non-kit version, the wait for delivery may be very long going into the Christmas season.

BTW, I just asked my son if they did any sort of soldering in his EE labs. None whatsoever, he replied.
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NK7Z
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« Reply #22 on: November 20, 2012, 04:11:28 AM »

I'm not in a huge hurry...  The thought of seeing several hundred Kc of band at one time is just cool...  I'll let you know the delivery time.
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Dave
For reviews and setups see: http://www.nk7z.net
NK7Z
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« Reply #23 on: November 20, 2012, 05:37:44 AM »

Quote
Should order in the next few days...

Especially if you're getting the non-kit version, the wait for delivery may be very long going into the Christmas season.

BTW, I just asked my son if they did any sort of soldering in his EE labs. None whatsoever, he replied.

I ordered the non-kit, and will let you know what the delivery time is...  I have a laptop that I will be using for it...  Off to see if there is a linux piece of software to drive it now...  If not, then I'll run it in windows.

The end result of this project is to get a portable RX going to look for RFI.  Being able to see an entire band at one time would make the process a lot simpler...  Also, there was some talk about DFing with it.
« Last Edit: November 20, 2012, 06:04:26 AM by NK7Z » Logged

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Dave
For reviews and setups see: http://www.nk7z.net
K9IUQ
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« Reply #24 on: November 20, 2012, 07:50:10 AM »

Quote
Wow, put the board in the oven!

That post stopped me in my tracks too.  Hey, I can do TV dinners!

It stopped me in my tracks too. NO one in this day and age uses an oven for TV Dinners. They use microwaves..  Wink

Stan K9IUQ
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NK7Z
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« Reply #25 on: November 20, 2012, 08:24:40 AM »

Moving back to the SDR discussion:

I ordered the RX only kit, pre-built, it may come sooner than I thought...  When I ordered it, there was an ad on the web site for it, after I ordered it, the ad was gone...  I hope that means that there was one pre-built kit in stock.  I also ordered a case for it...  All in all the entire cost for an SDR radio was about $120.00...  Not including the computer.  Can't wait till it arrives... 

Many thanks to the folks who mentioned that the kit had SMD on it, and to all others that contributed something useful...  I probably would have ordered the kit, and then been unable to even see the SMD stuff... 

Again, thank you to the people that helped! 
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Thanks,
Dave
For reviews and setups see: http://www.nk7z.net
NK7Z
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« Reply #26 on: November 21, 2012, 07:26:43 AM »

Quote
Should order in the next few days...

Especially if you're getting the non-kit version, the wait for delivery may be very long going into the Christmas season.


Hi,
Ordered the pre-built version, and oddly enough, I got the shipping notice yesterday...  Shipped the same day it was ordered...  So it looks as if I don't have to wait!  Should have it in a few days...  I expect to have it operational within the week. 

73's
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Thanks,
Dave
For reviews and setups see: http://www.nk7z.net
NK7Z
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« Reply #27 on: November 29, 2012, 12:34:08 PM »

Quote
Should order in the next few days...

Especially if you're getting the non-kit version, the wait for delivery may be very long going into the Christmas season.


Hi,
Ordered the pre-built version, and oddly enough, I got the shipping notice yesterday...  Shipped the same day it was ordered...  So it looks as if I don't have to wait!  Should have it in a few days...  I expect to have it operational within the week.  


Hi again,

Just finished powering it up for the first time...  All working!  Thanks to all for the help!  

What a totally cool device the Ensemble II is.  I have an image rejection problem on one computer, and no image image rejection problem on a different computer.  Can't seem to null the one with the problem using the phase and amplitude settings.  Thanks again all!!!

73's
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Thanks,
Dave
For reviews and setups see: http://www.nk7z.net
KE5JPP
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Posts: 0




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« Reply #28 on: November 29, 2012, 12:44:07 PM »

Quote
Should order in the next few days...

Especially if you're getting the non-kit version, the wait for delivery may be very long going into the Christmas season.


Hi,
Ordered the pre-built version, and oddly enough, I got the shipping notice yesterday...  Shipped the same day it was ordered...  So it looks as if I don't have to wait!  Should have it in a few days...  I expect to have it operational within the week.  


Hi again,

Just finished powering it up for the first time...  All working!  Thanks to all for the help!  

What a totally cool device the Ensemble II is.  I have an image rejection problem on one computer, and no image image rejection problem on a different computer.  Can't seem to null the one with the problem using the phase and amplitude settings.  Thanks again all!!!

73's

Are any of the computers where you are having image rejection problems laptops?  What software are you using?

Gene
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NK7Z
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« Reply #29 on: November 29, 2012, 12:51:44 PM »


Are any of the computers where you are having image rejection problems laptops?  What software are you using?


Hi Gene,
Thanks for the assistance!  Yes, the laptop is fine, no images unless I tweak the phasing setup...  I can make it bad, but I can make it good as well...  

On the desktop, with a pci based soundblaster card, the phase controls seem to make no difference at all...  Maybe I am moving them too far, too fast, causing me to miss the change because of the latency, but for the life of me I swear I am moving them slow enough...  Using HDSDR.

I know the rig/cable are good else they would not work on the Laptop...  Oh well, this is what makes things fun!  Smiley

73's
« Last Edit: November 29, 2012, 12:54:15 PM by NK7Z » Logged

Thanks,
Dave
For reviews and setups see: http://www.nk7z.net
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