I have never worked for a radio company. Was in the US Navy for 22 years.
73 Glenn WB4UIV At 08:20 AM 8/20/2009, you wrote: >I remember going to the Glenayre paging company for training years ago. >I saw that the factory had stripped off the gold plate on all the PA >transistors before attaching them to the board. This was critical for a >PA that stayed key-down for hours, or even days. The spare part >transistors were also shipped with the gold removed, but were very >expensive to purchase because of this extra work. Now I know what the >problem was called, "gold embrittlement". > >Thanks, > >73, Joe, K1ike > >PS; You aren't the Glenn that worked a Glenayre, are you? > >Glenn Little WB4UIV wrote: > > Desolder the flat gold plated transistor leads. > > Clean the black residue at the gold - tin interface. > > Resolder the transistor leads after removing any gold left by tinning > > the lead and removing the solder a few times. > > > > Gold embrittlement is very common. > > > > 73 > > Glenn > > WB4UIV > > > > > >------------------------------------ > > > >Yahoo! Groups Links > > >
