Sporadic Reflections

30 August 2006

ARRL Design Challenge & the BITX 20

In the August issue of QST, the ARRL issued a design
challenge for an SSB transceiver that could be built
for $50 with commonly available parts.

A young engineer from India, Ashhar Farhan, has designed
a transceiver that seems to fit most of the criteria, the BITX 20.
It has an interesting history and an active following.
The claim is that it can be built in India from surplus parts
for 300 Rupees (equivalent to $8). Based on EMRFD receiver design
and transmitter added with consultation with W7ZOI.
A bagful or 3904s and 4148s provides most of the silicon.
The inductors are wound on tap (faucet) washers in the original design.

29 August 2006

Sporadic Reflections

It would be a good idea to google a name before you use it.
Naturally, I remembered this after I picked the name for this blog.
Here are some of the relevant links I found.

sporadic reflections definition from Answers.com
sporadic-E propagation at VHF
Pretty pictures of many types of http://www.tvcomm.co.uk/radio/
Fact-of-the-Day discussion of Sporadic-E Reflections

The S-Meter Site where the Fact-of-the-Day page was found
is new to me and seems packed with interesting ham radio information
including a page of remote receivers you can listen to.


NEScaf is a new switched capacitor audio filter kit from the New England QRP club.

28 August 2006

The first post

I plan to use this blog as a way to record and
share the ham radio related links I find as
I am searching the web on a daily basis.

90% of the posts will be ham radio related
and most of them will concentrate on home brew
and low power radio.