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Author Topic: Photographs of my new HBR-11 Homebrew Receiver  (Read 1546 times)
KC9KEP
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« on: May 13, 2009, 12:17:46 PM »

Hello all!

I'm just finishing my HBR-11 (Ted Crosby April '63 QST) receiver.

http://www.bignick.net/HBR_11/7.jpg
http://www.bignick.net/HBR_11/5.jpg
http://www.bignick.net/HBR_11/4.jpg

I'm really excited about winding more coils to see how the unit performs on the higher frequency Ham Bands (I've got 80m coils fabricated to date.)

Just had to share my excitement :-)

73

--Big Nick AKA Tom Nickel AKA KC9KEP
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AA4PB
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« Reply #1 on: May 13, 2009, 01:03:13 PM »

I'm impressed! It looks like it just rolled off the assembly line. You did a great job.

In reference to your other post, you probably want to check MDS (Minimum Desernable Signal). Turn on the BFO and use a calibrated signal generator to see how many microvolts it takes at the antenna to detect the presence of the signal. You'll probably need an attenuator to get the signal down that low. Generator leakage can also be a problem with inexpensive generators.

You can check the bandwidth at the antenna input in order to avoid problems with loading the IF input. With the AVC off, inject a weak signal and tune the generator + and - for a 3dB drop in received signal.
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KG4RUL
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« Reply #2 on: May 13, 2009, 02:27:02 PM »

Classy!

What is the front panel made of?
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W3LK
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« Reply #3 on: May 13, 2009, 04:58:48 PM »

You did a beautiful job on the front panel. Once you get the dial calibrated, it will be the crowning touch.

Congratulations,

73,

Lon - W3LK
Naugatuck, Connecticut
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A smoking section in a restaurant makes as much sense as a peeing section in a swimming pool.
VA3DXV
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« Reply #4 on: May 14, 2009, 05:07:55 AM »

That is a thing of beauty... congrats!
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KC9KEP
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« Reply #5 on: May 14, 2009, 07:44:17 AM »

The front panel was laid out in CorelDraw 12 on a PC.

It was then Laser engraved on 0.090" black anodized aluminum.

--bn
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KC9KEP
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« Reply #6 on: May 14, 2009, 07:48:40 AM »

Thanks all for the kinds words :-)

And thanks for the info on quantitatively assessing the unit's performance.

I’ve received no replies to my query posted on the Elmer’s Forum, so I'm not sure if my query was inappropriate; perhaps this methodology is considered "common knowledge"?

This is all new to me and that's why I love working on this technology, so thanks for the help :-)

--bn
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N9SKN
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« Reply #7 on: May 15, 2009, 11:10:53 AM »

Your craftsmanship on the rigs is even more impressive than your very nice website.

Wow!
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KC0KEC
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Posts: 12




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« Reply #8 on: May 17, 2009, 09:23:52 PM »

Most impressive!  I love it when homebrew looks professionally done!!

Can you elaborate a bit more on the laser engraving?  How did you get that accomplished?

KC0KEC
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K5DVW
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« Reply #9 on: May 19, 2009, 11:55:55 AM »

Nice work.

How about some photos of the inside?
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KG6YV
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« Reply #10 on: May 28, 2009, 11:18:04 AM »

Magnificent is the only word I can use to describe this radio.  You should be very proud of your accomplishment.  A beautiful radio indeed.  

Greg
KG6YV
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AK2B
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« Reply #11 on: May 28, 2009, 01:14:43 PM »

I can see why you're excited. Congratulations, that is a very nice job.

Tom, ak2b
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W0BTU
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« Reply #12 on: June 07, 2009, 10:22:48 AM »

Although I've been self-employed for over 10 years, the former owner (Larry) of the last place I worked demanded perfection. He hired only the very best tool and die makers, engineers, etc. because he had a passion for shipping only the very best products to his customers. I worked in about five companies (large and small) before that one (lakotool.com), and in my experience, there are not that many people -- in any field -- that are really, really good. Larry was the best tool & die maker and engineer I have ever seen in my life. That's why he was the boss.

Larry would have been delighted to have you work for him. I've seen some really good craftsmen, but none better than you or Larry. You are a real credit to amateur radio, and I have great respect for you. After seeing your web site and the photos, all I can say is WOW.

Thanks for sharing your outstanding work.

73 Mike
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