All,
I'm starting to need reading spectacles, so I took the liberty of
redrafting the schematic submitted by Mr. Farhan into a series of
modular documents that should take somewhat less effort to view finer
details such as decimal points. I tried as hard as I could to make
them reflect best engineering practices as I currently understand them.
I've incorporated what appear to be the most popular modifications
I've seen in this group to date that also keep to the spirit of
requireing only those parts reasonably obtainable in India to an
amateur of limited finances. I've also imade annotations derived
from Mr. Farhan's text where appropriate for clarity.
The source documents were drawn using the latest version of LTSpice,
available from the Linear Technology website. I then exported them
into Word bitmap files. Finally, I retouched those files to add
details not available from LTSpice, such as variable capacitors.
Please note that the LTSpice diagrams themselves are not runnable, I
merely used the tool as a drafting aid.
Please feel free to make corrections as appropriate. One thing I
would recommend is other sets of capacitor values for different IF
frequencies. I hope others will add to Table 1 in TRANSCEIVER.bmp,
more working choices for IF's besides 9 and 10 Mhz.
You'll find this archive uploaded into as EGR\BITX.zip
Enjoy,
The Eternal Squire
