Heath Parts ID

[Gaetan Lavergne]

Radioham wrote:
>
> Fellow Heath Gurus-
>
> I need some help.  I am trying to put a new, unused, almost built HW-9 on
> the air and am in the alignment and troubleshooting stage.  I may have to
> swap out some parts which were defective (I guess Heath won't send me subs
> anymore :-() or damaged during installation.  Unfortunately, I don't
> recognize some of the P/Ns as being readily available and wonder if anyone
> knows of a site or has info on what is available today in the way of
> substitutes.  As an example, I may need a BA-244 diode and a MPAS20
> transistor.  The replacement chart in the manual does not note any subs for
> these.  These are not your garden variety 1Nxxxx or 2Nxxxx or are they??
>
> Hopefully I will be able to debug this rig and get it on the air soon.  If
> I have more problems, I will be back to well of knowledge.
>
> Thanks in advance.
>
> 73,
>
> Steve, N4EUK
> Reston, VA
As for Ba-244 it is a ECG-177 D-Si,Gen Purp Det,200Prv
       Mpsa20 Is a ECG-123APT-NPN,Si,AF/RF amp
73,Gaetan