Re: LF: Optimizing Ferrite Rod Antennas - OT?

[wa3tts@verizon.net]

Tom: Many Thanks for the link to Ben H. Tongues writings. I own and have restored both R-98 and R-20 Blonder-Tongue radios circa 1959 and  1960...(Ben H. Tongue of Blonder-Tongue Labs, Inc.)

The R-98 design stacks the 10.7Mhz IF transformer in series on top of the 455 kHz  IF transformer.  An interesting approach to a dual band receiver.

The design of the R-98 got me thinking if it was possible to build an optimized LF/MF dual band antenna transformer.... I am not sure if it is worth the effort, with the extra feed line, etc.

The point is that ideas for LF/MF exploration can come from other aspects of the radio art...

73, Mike wa3tts

-----Original Message-----
From: DK1IS <DK1IS@kabelmail.de>
To: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Sent: Thu, Jul 19, 2018 4:59 pm
Subject: LF: Optimizing Ferrite Rod Antennas - OT?

Hello group,

To whom it may concern: cleaning up my old laptop I happened to find a
file from Ben H. Tongue dealing with the optimisation of ferrite rod
antennas:

http://kearman.com/bentongue/xtalset/29MxQFL/29MxQFL.html

Coming originally from the crystal radio people some design aspects in
the article could be interesting for our VLF, LF and MF work too - if
not already known.

73,
Tom, DK1IS