Monday, November 1, 2021

The QDX kit hath arriven

My much-awaited QDX digital transceiver kit from QRP Labs was gently deposited into my mailbox this morning and the Hakko soldering iron is already salivating.

Construction begins this evening.

As can be seen, many parts - the SMD's - are pre-installed, leaving less than 50 components to be soldered. The time-consuming parts will be the inductors, including the dreaded L12.

Builders have a choice in how to wind T1: either for a 9V or a 12V DC voltage. I'll be building mine for a 12V power supply.

Those who wanted a QDX but didn't complete the order in time will be happy to know that Hans G0UPL has recently obtained parts to allow the eventual sale of another 375 QDX kits. Read all about it here.

 


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4 comments:

VE9KK said...

Ah yes nothing like the smell of solder in the morning....have fun with the kit and do pass along pics of the build.
73,
Mike
VE9KK

John AE5X said...

AArrrrgggg - a problem!

Upon completion I see only 2 ohms between DC input and ground. Why did I measure it - because no power up and no LED illumination. I 'think' the only components user-installed that can be possible culprits are T1 and T2. I have wire on-hand to rebuild T2. If T1's the problem, I'll have to order (larger gauge) wire to re-wind it. This assumes that the primary and secondary of one of these transformers are internally shorted together. Easy enough to check but I won't be able to get to it until Thursday.

Unknown said...

Where did you get that soldering jig? I fellow ham sent me an image of it and a Google image search yielded this page. It looks like a winner and I would certainly pick one up.
Thanks,
-rick

John AE5X said...

https://www.amazon.com/gp/product/B00Q2TTQEE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1