dxAce wrote:

Rickmers, I've been able to do a lot with my "student" radios!

The R7 (and the companion TR7) were designed in a different day. There were
lots of stations to receive, and almost no noise. Someone on the east
coast of the US could get BBC, Radio Moscow, CHU, WWV, and a few other
stations by attaching a 1 foot wire to the back of the radio.

On a good day, you coud receive stations from (eastern) Asia and Australia,
South America and Africa.

If you had an outside antenna of almost any size, (1m or longer), you
could receive them almost all the time. Not the same stations all day,
but the except for the BBC and Radio Moscow, they were scheduled to only
be on during best propigation hours.

The BBC and Radio Moscow were on 24/7.

It was also still the time when a wide skirt filter was desired for AM, so that
you would get pleasant sounding broadcasts. You did not need a narrow skirt,
or for that matter a narrow passband filter.

The the late 1980's and early 1990's came around and you needed as sharp a
filter as you could get for Shortwave listening. Forget about audio quality
and ease of listening.

Yes, I have ignored CW and SSB, but that's a whole different topic and not
very important to the average 1970's listener they were not important.
In those days people still listened to SWBC for news and entertainment.

Geoff.



--
Geoffrey S. Mendelson N3OWJ/4X1GM
Making your enemy reliant on software you support is the best revenge.