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New 160M Transmitter




 
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Author Topic: New 160M Transmitter  (Read 1615 times)
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vk3alk
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« on: April 18, 2020, 11:54:47 PM »

Since Pats unfortunate fire the activity on the Class E part of the forum will probably drop a bit so thought would post some pictures of my near finished Transmitter...
It only outputs appox 300 Watts but since the Australia legal limit is 120 Watts of carrier there is not much point running any more...
Has been tested running music audio for a number of hours and all seems good so way....
The test did pick up a poorly made Regulator Inductor ( thats my fault ) so had to make another using a slightly larger core...
All good now though....
Have attached a photo of the jig I use to make the transformers....

Are just waiting on some Manganin Wire for my Current Shunt to arrive and are labeling the meters used for Current  and SWR/Power...
Also need to makeup a SWR Bridge as well.
Tidy up some of the wiring and thats about it really...

Will still test more before transmitting on air though...


Wayne


* Jig assembly.JPG (424.23 KB, 1600x1200 - viewed 197 times.)

* Under test.JPG (484.21 KB, 1600x1200 - viewed 236 times.)
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N4LTA
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« Reply #1 on: April 19, 2020, 01:10:18 PM »

Looks great.  Wish I could start on one like it. The appraiser starts tomorrow on my shop and lab. After he finishes, I start rummaging through to find what he missed. He seems like a good guy and I think I will be fine but I have no real ability to punch and cut metal and it will be a while until I can. I may try to build something using sendcutsend  laser cutters . They do a great job and are fast and not expensive..

Keep up the great work Wayne!

73

Pat
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KD6VXI
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Making AM GREAT Again!


« Reply #2 on: April 20, 2020, 01:29:30 PM »

Harbor freight sells a hydraulic punch set that goes from 3/4 to 2 inch.

Hunnerd bucks.

--Shane
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vk3alk
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« Reply #3 on: April 27, 2020, 05:43:05 AM »

Ok its not the most exciting picture on the Forum but the TX is just about finished....
The flash of the camera hasn't quite done it justice as the paint color is darker and the labels have more detail....
Used the Meter program from Tonnes......a little mucking around but got there at the end of the day....
Just waiting on this wire for the Current Shunt to arrive so the TX has been pushed to the side .....
A little annoying waiting ..... the postage here at the moment is terrible...

Wayne..


* P1030266.JPG (334.45 KB, 1600x1200 - viewed 145 times.)
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N4LTA
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« Reply #4 on: April 27, 2020, 11:12:45 AM »

Wayne

Looks very nice.

Pat
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Patrick J. / KD5OEI
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« Reply #5 on: April 30, 2020, 02:14:50 PM »

Yes, very orderly and pleasing front panel. I like gray.
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