[HBR] Source for older radio books

[Bill Higgs]

For Walt and the others looking for the older titles; RSGB handbooks, Orr's 
Radio Handbook, etc.

Try www.alibris.com. This is a consortium of used booksellers, with a good 
search facility. A search on the topic "amateur radio" turned up well over 
100 titles, several with multiple copies available. My 1971 copy of the RSBG 
handbook was obtained through this source for about $20 a couple of years 
back, as was my 1950 and 1963 ARRL Handbooks (under $10 each!).

By the way, work on the HBR-?? is continuing, but slowly, due to work 
responsibilities. The RF stage, local oscillator, and first mixer are 
working nicely, the second mixer and oscillator (6U8) is complete but 
untested, and the BFO (using the old BC-453 BFO coil with half of a 12AU7) 
is BFOing just where it should be, variable +/- about 3kc either side of 
85kc. (I'm using the other half of the 12AU7 as a phase splitter, hoping to 
drive the deflection plates of a 6JH8 as a product detector in push-pull. 
Anybody tried this?) Next step is to finish the 85kc IFs, and get them 
working. Maybe this weekend. Or next...

I've tried the front end output at 1600kc as a converter to feed my ICOM 
718; stable as a rock on both 80 and 40.

By the way, I did the BFO first for use as a signal generator to test and 
align the IFs. My regular signal generator only goes down to 100kc, and my 
audio generator only goes up to 60kc. Murphy's law...

As soon as I get a bit further along, I'll put some images on the web.

Good to see all the activity on the forum!


Bill, NT4C