Re: follow up: QRP Labs products and kit building discussion.
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Excellent video. I have been more or less following this procedure for the various builds I have done but will follow in detail in future. Main exception is that I have been starting adjustments at L2 as I have found that with 20m versions this had greater effect than L1 and L3. Am currently repurposing one of my spare 20 m boards for 30 m. I haven't seen much correspondence regarding low power for this version but have found <1W output as built maxing at <2W with coil adjustment. What I did notice eventually was an increase in output of about 15% with extended key down (maybe 5 - 6 sec) with C25/26 getting too hot to touch. I am guessing that these (560 pF) caps were LPF "spares" from the original 20 m kits purchased in Jan 19. Wondering if there have been any similar reports. For my 20 m board I replaced with Vishay 390 pF from Digikey and bulked up to minimum order with other bits. This time I have no other needs from Digikey but have been unable to find any Vishay equivalents locally (RS or Farnell). USD 30+ for 2x560 pF caps is a bit steep for a $50 rig. Slight saving grace with previous Digikey purchase was the delivery door to door US - Malaysia in 4 days - this typically beats the local guys by several days - impressive!
Anyone have any better suggestions for this difficulty?
Thanks Mike 9M2LXM
On Fri, Oct 9, 2020 at 3:06 AM Hans Summers <hans.summers@...> wrote: