HI HAM PALS :)
IN FIRST PLACE THANKS MR EVANS FOR YOUR REPLY . SOMETIMES IS VERY
IMPORTANT TO THE PEOPLE WHO LIVE OUTSIDE USA OR EUROPE TO FIND
ALTERNATIVES TO TOROIDS AND OTHER ELECTRONICS COMPONENTS NOT SO
COMMON HERE AL LEAST IN ARGENTINA AS ONE TIME SAYS ONE SALES PERSON
IN A LOCAL ELECTRONICS COMPONENTS SHOP WHEN i ASK ABOUT COIL FORMS
AND TOROIDS '' RADIO AMATEURS ARE NOT BUSSINES ''
JULIUS WHAT ABOUT IN ENDING THE MIXER WHIT A DIPLEXER AND TRY A
DOUBLE BALANCED ONE IN THIS SITE YOU CAN FIND SOME DATA WITHOUT
HEAVY MATHEMATICS SEE THE DIPLEXER PAGES WHIT A FEEDBAK OF W7ZOI
--- In BITX20@..., "Wijaya, Julius" <ubberalles@y...>
wrote:
speaking about mixers, how to make it good, i got a whistling
sound, farhans said its about bad post mixer signal.
any tips..
rgds
julius
* REPLY SEPARATOR *
On 3/28/2005 at 10:44 PM Arv Evans wrote:
Fernando
I used a 1/4 inch (about 6mm) wide slice of 1/2 inch (about 1.25
cm)
inside diameter PVC water pipe for the 10 MHz trifilar cores.
Turns used
were the same as Farhan specified in his original design.
The number of turns does not seem to be very critical.
Arv K7HKL
On Mon, 28 Mar 2005 21:47:40 -0000, streamerhart
<fernandocasari@h...> wrote:
Dear all:
I slow work in a 80 mts bitx20 and i have a dude some of you
made the
transformer for diode mixer in no ferrite toroidal core I thin
there
are a picture of this in the photo section .-
Is this posible one time I made a diode mixer with trifilar
winding in
a pvc water pipe and it work I can follow experimenting with
this due
to a lack of instrumental .-
any help on this topic is very appreciate.
Best rgds
Fernando LW5DNC
Bs.As Argentina
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