[hpsdr] Mounting Munin T1 & T2??
Dick Faust
k9ivb at cox.net
Tue Dec 24 14:46:02 PST 2013
John
Go to the Munun2 page and read.
http://www.k9ivb.net/Munin2/index.htm
You should also download and read the following two documents:
http://www.k9ivb.net/Munin2/Munin2_General_Construction_Info_07052013.pdf
Especially page 6 and
http://www.k9ivb.net/Munin2/Mounting_The_RD100HHF1.pdf
The supplied spacers are 1/4" and the heat spreader is also 1/4" so the
board will short to ground without a longer spacer.
If you can find a 3/8" spacer it will come close.
Do not keep bending the leads or you may crack the seal on the
transistor body.
Dick K9IVB
On 12/24/2013 12:25 PM, John wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
>
> Transistors T1 and T2 in my Munin kit are made with the two thin leads
> a considerable distance above the top of the mounting flange. When
> the four corners of the circuit board are spaced so that the two thin
> transistor leads are flat against the pads on top of the board, there
> is considerable distance between the bottom of the copper straps and
> the top of the transistor flange. As transistor hardware is tightened
> the board starts to bend and the transistor leads lift above the pads
> on the circuit board.
>
> Has anyone else had this problem and, if so, how did you make it work?
>
> Best regards,
>
> John, WoGN
>
>
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