Thanks to all for info on the capacitor. The only place I had checked was
rf parts but have not ordered yet. Also wanted to come up with a #8 brass
washer. I'll go with a new original cap from Ameritron/mfj. I saw the
plate choke there but not the cap, will follow the link. I'll still be on
There are doorknobs and there are doorknobs. Most hams know this.
But you can't always use just any class 2 RF doorknob, especially in a
critical application like a series connection between the transmitter
final and pi output tank. Why does this matter to the 160 m.
reflector. Because
Jim -
I recently had the failure of a 170pF doorknob in an Ameritron AL-1500
160M padding section. Replacements readily available:
http://www.ameritron.com/Product.php?productid=290-0170-7
I believe Surplus Sales of Nebraska and RF Parts also sell the HEC
doorknobs. 170pF sure seems to be a
If you can't find the exact value of 170pf the ceramic 5KV door knobs
at 200pf will work. Better yet even a couple of 500pf door knobs in
series will give you 250 pf which will just mean a little less on your
variable will tune. Another common ceramic door knob value is 500pf and
three in
If you can't find the exact value of 170pf the ceramic 5KV door knobs at
200pf will work. Better yet even a couple of 500pf door knobs in series
will give you 250 pf which will just mean a little less on your variable
will tune. Another common ceramic door knob value is 500pf and three in
Greetings to Top Band Men, Women and undecided,
The starting gong for the 20th Edition of The Stew Perry TopBand
DX Challenge will go off at 1500Z, Dec 26 and the ending gong will
happen at 1500Z Dec. 27. In between these times grid square gladiators
will utilize cunning, wit, resolve, Morse
Both are N750 types. You need a #6 lug, a short #6 screw (3/16th long), and
some #16 bus wire plus a brass washer that Ameritron will have. The chokes
come from Ameritron no matter where you buy them.
Thanks Tom,Re. the lug, screw and wire, I'm assuming the capacitor I ordered
from them will
Both are N750 types. You need a #6 lug, a short #6 screw (3/16th long),
and
some #16 bus wire plus a brass washer that Ameritron will have. The chokes
come from Ameritron no matter where you buy them.
Thanks Tom,Re. the lug, screw and wire, I'm assuming the capacitor I
ordered from them will
Well, I'm glad it wasn't the switch, as that would be a bear to fix.
Hopefully the capacitor will resolve your issue. Then you can join us on
160 and listen to the awful conditions :o)
Happy holidays and a safe, healthy, and productive new year!
Vy 73,
Don W4ZYT
Tom is correct as usual but if you want to get the rig working for the
Stew coming up a junk box substitute may get you on the air until the
exact replacement arrives.
Herb, KV4FZ
On 12/21/2015 10:21 AM, Tom W8JI wrote:
If you can't find the exact value of 170pf the ceramic 5KV door
Thanks to all for info on the capacitor. The only place I had checked was rf
parts but have not ordered yet. Also wanted to come up with a #8 brass washer.
I'll go with a new original cap from Ameritron/mfj. I saw the plate choke
there but not the cap, will follow the link. I'll still be on
Just wanted to commentDon't overlook Ebay for electronic parts
of all sorts. I was able to replace the doorknob caps in my AL82 easily.
BTW, keep extras on hand for 160 because you will need more eventually.
Simply enter exactly what you're looking for and you'll be surprised
at what
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