Re: Spurs/Harmonics fixes for v4 based on v5 board design?

Timothy Fidler

If you heat up the covered copper land and thrust in a darning needle , say 1.5mm diameter,  you can forget  the jeweller's drill.  Solder will not stick to chrome plate.


Timothy E. Fidler : Engineer BE Mech(1) Auckland , NDT specialist AINDT UT /RT3 , MT2 CB #2885, 
Telephone Whangarei   022  691 8405
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----- Original Message -----


Thu, 24 Jan 2019 16:33:43 -0800
Re: [BITX20] Spurs/Harmonics fixes for v4 based on v5 board design?

Yep I just figured I would do the rest for good measure... though didn't realize how bad I was at desoldering.

To amend my previous statement it took vaccum desolderer, braid and a jewelers hand drill to clear out the holes to make it easier to get the new ones in.  I'm sure there other possibly easier ways but I chose the hard one.   I'm slightly better at desoldering now though :)

On Thu, Jan 24, 2019 at 06:24 AM, Raj vu2zap wrote:

Only three relays need to be replaced KT/1/2/3


At 24-01-19, you wrote:

I will also say you will have to perfect your desoldering skills to remove all 5 relays :)  I thought I knew how to desolder before I started... but clearly I was deluding myself.
I nearly gave up but watched a couple youtube video's and so someone much better than I doing it and managed to learn the way to do it with a simple suction vac and desoldering braid.. though I was really wishing I had one of those hakko electric vacuum desoldering tools :)

On Tue, Jan 22, 2019 at 06:55 PM, Dave Space wrote:
I actually did replace all of the relays with axicom relays.  I bought some parts to build an external filter to see how that does (not due to arrive for a while).  I'm transmitting SSB when doing the test.

I also bought the parts to replace L5 and L7 not due to arrive for a little while either.  Any chance the mod suggested for the v5 board would solve this harmonic?

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