[VHFcontesting] Larcan UHF Pallet Heat Spreaders

[mikflathead at aol.com]

 Thanks for the link. These are rated from 470 - 860. Has someone used them on 432 ? Any articles available? Thanks
    On Sunday, January 5, 2025 at 09:32:19 AM EST, Fred Stefanik <n1dpmfred at gmail.com> wrote:   

 https://www.ebay.com/itm/285964418549?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=ihgLE7x2Rs6&sssrc=4429486&ssuid=uRUE_CRYRl-&var=&widget_ver=artemis&media=COPY
On Sun, Jan 5, 2025, 8:19 AM mikflathead at aol.com <mikflathead at aol.com> wrote:

 Where are these available from? Thanks
    On Saturday, January 4, 2025 at 04:54:36 PM EST, Fred Stefanik <n1dpmfred at gmail.com> wrote:   

  All,

I have been asked if I could machine some heat spreaders for the Larcan
UHF (432) pallets that are available surplus.  The answer is yes.  I will
be making them from aluminum (no need for copper at this power level).
They will be the proper thickness to make for mounting the pallet on a flat
surface.  They will have the proper depth slot machined in them for the
LDMOS FETs and 4 clearance holes for mounting the FETs and and 6 x 2-56
tapped holes for mounting to the PC board.  I will also include (6) 2-56 x
1/8" screws for mounting.

The price will be $25 each plus shipping (likely a small USPS flat rate
package).

Please let me know if you want some and how many.  I'm going to leave this
open for 2 weeks.  So right after the January VHF contest I will order the
material.  Let me by no later than end of the day January 19th.  I will be
ordering the material on January 20th.  I'm making ONE "batch" ONLY!!!  I
will contact you when they are done and you can settle up then.

Thanks  and 73
Fred
K1FMS
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