[Johnson] re: Silver mica's

[w5sum]

THIS IS A COMMON FAILURE IN VALIANTS

and man oh man, have I been hearing this tale a lot lately. I guess the old 
silver mica's in all the valiants have decided to go north at once..

Skip.. never ever use those small silver mica's in there. Even if they are 
rated 1000v ea. Get yourself ONE 330 pf and ONE 150pf 3KV transmitting mica's 
from Surplus Sales or some such place. You will have to use a shoe horn to 
get them in there, but you can do it. Check that little 4 section mica cap 
too, they are famous for dying.

Now.. also check the ceramic disks and the rf chokes that are on the bottom 
of the rf plate choke. I have seen those get fried when those output loading 
mica's fail.

If you put the larger ones in and they still fry, you have a spur somewhere 
that is frying things. I have fought that battle too!!

Hope this helps, but don't waste your time with the small mica's..  put BIG 
UNS in there

73's

Ronnie

On Fri, 26 Dec 2003 23:21:56 -0500, skip wrote
> Happy new year and season greetings to all,
> 
> I finally replaced the silver mica's in my Valiant.  Well, they 
> lasted two days and out they went agn.  The mica's were 1kv would it 
> work to use just (1) 5kv or 10 kv 150 and (1) 350 ?????
> 
> That would replace the 4 caps in each leg off the band switch.
> 
> tnx de Skip    K3CC
> 
> The little lights keep going out !!!!!!!
> 
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The "AM" voice of Shreveport, Louisiana USA
formerly WN5AIA and WB5AIA
I got my Extra Class the old fashioned way... I earned it!