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Author Topic: 1-Watter Small Morse Code Radio Build.  (Read 5161 times)

gil

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1-Watter Small Morse Code Radio Build.
« on: September 19, 2016, 06:07:44 AM »
It's in the mail! I chose the 80m version after much inner debate. It will be a nice complement to my MTR which covers 40/30/20m. The coverage is only about 4kHz but that's all you need..

http://kitsandparts.com/1watter-V3.php


Same price as a Rock-Mite but with filtering and tuning, awesome! I have a feeling it won't be my last one.. They are available from 15 to 160m. I still want to re-build a Rock-Mite 30, but the 1-Watter is more bang for the buck. With a Hammond cast aluminum case it will make a nice rugged NVIS QRP rig. I will pair it with 135ft of copper clad steel wire from the Wireman and an 80m end-fed tuner from SotaBeams.

Stay tuned for the build on this thread...

Gil.

cockpitbob

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #1 on: October 19, 2016, 11:19:00 AM »
Well...... is it built yet?

I took a closer look at the kit and it looks like you have to buy your own pots, connectors, etc., so the price is significantly larger than the $47USD.  Do you know how much your final cost is/will be?

gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #2 on: October 19, 2016, 01:12:36 PM »
The kit is missing some components, a few capacitors and a voltage regulator.. I've had components missing from kits before but this is a bit much. I'll finish soldering the rest of the components this week to make sure nothing else is missing, then email the seller.

All pots, connectors and button are included.

Gil

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cockpitbob

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #3 on: October 19, 2016, 04:17:36 PM »
I really want to build an 80m one to complement my 40/30/20 MTR.  It's good to know I won't have to chase around for knobs and switches.  The only thing stopping me is...time.

I can't wait to hear your review of it.

gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #4 on: October 19, 2016, 05:18:42 PM »
That was my point as well, a perfect addition to my MTR. They shipped the kit very quickly, so the missing components should get here fast too. I just need to finish the kit to make sure nothing else is missing.. Or maybe take inventory.. So far the build is very straightforward and simple..

Gil.

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gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #5 on: November 17, 2016, 01:47:14 PM »
I made some progress on the 1-Watter tonight, almost finishing it. Four band-specific capacitors of the same value are missing from the kit. I emailed Kits & Parts and got a reply within ten minutes promising to send them right away, excellent... I just noticed one of my crystals is crooked, oh well, I'll fix that next time. I am still scratching my head as to how to build T5 from the directions...



I have wound this type of core before but I forgot how to do it and how to count the turns. If anyone reading this has an idea..?



If all goes well I'll probably get one for 30m.

Gil.
« Last Edit: November 17, 2016, 02:03:52 PM by gil »

cockpitbob

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #6 on: November 17, 2016, 02:30:30 PM »
Hi Gil,
1 pass through both holes is 1 turn for the binocular cores. 
Your 3rd pic shows 1 turn of #30 wire.  Assuming all you did next is pass each leg through one hole, then the 4th pic shows 2 turns of #30 wire.

gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #7 on: November 17, 2016, 03:50:42 PM »
Thanks Bob! I'll get back to it when I receive the missing caps...

Gil

gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #8 on: December 11, 2016, 07:49:17 PM »
Hello,

I finished the 1-Watter 80 #806 today... The receiver works fine but unfortunately it does not transmit...



I hate troubleshooting...

Gil.

gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #9 on: February 08, 2017, 06:00:01 AM »
It's alive! I reheated a few suspicious solder joints and turned the power adjustable resistor all the way up and RF is getting out! Now comes the hard part, putting it in a box. I have a Hammond 29830PSLA die-cast aluminum case. It's bigger than my MTR3b but oh well, still a small box. Now I'll have 80m as well as 20/30/40. I'll put a button to use as an emergency key as well. There is no space in the case for batteries.

I'll make a video when it's all done.

Gil.

cockpitbob

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #10 on: February 08, 2017, 08:33:14 AM »
Really nice!  Have you measured the actual frequency adjustment range?  I assume it's centered on the QRP calling freq.

gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #11 on: February 08, 2017, 01:25:06 PM »
Thanks, not yet. I don't have the correct tuning potentiometer...

Gil.

gil

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Re: 1-Watter Small Morse Code Radio Build.
« Reply #12 on: May 11, 2017, 01:12:41 PM »
It's in the case... Still don't have the correct tuning potentiometer but oh well. I am missing the DC plug as well. Sometimes you just have to go ahead and do it... I will shorten the wires and solder them now. The case is a Hammond 29830PSLA Eddystone.



The kit is quite a bit larger than a Rock-Mite, especially in that case, but you can tune around the crystal frequency a bit and it has filtering! The best bang for your bucks QRP kit out there IMHO.

Gil.