From: Roman <rw3adb@YANDEX.ru>
To: rsgb_lf_group@blacksheep.org
In-Reply-To: <164b8398c37-c8d-b24e@webjas-vac062.srv.aolmail.net>
References: <8204aa2f-d5fb-a22f-f7cf-fc98e538fb72@kabelmail.de> <164b8398c37-c8d-b24e@webjas-vac062.srv.aolmail.net>
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Date: Fri, 20 Jul 2018 18:33:00 +0300
Message-Id: <28940961532100780@iva2-6ec8f0a6115e.qloud-c.yandex.net>
Subject: Re: LF: Optimizing Ferrite Rod Antennas - OT?
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Hi LF, Mike, Tom!

Will be helpful for anybody, but on russian language:

Old discussion at 136.su russian LF forum about ferrite ants and DM4TR grabber with ferrite ant practical results:

http://136.su/index.php/topic,119.0.html

The other old discusion on radioscanner.ru forum:

http://www.radioscanner.ru/forum/topic22993.html

-Many practical results from different OM's into forum but on HF band mainly.

Russian book - main hand-book of all ferrite antenna designers in Russia:

Khomich V.I. - The receivig ferrite rod antennas, but on russian language only.

http://www.radioscanner.ru/files/antennas/file1138/

The wide-band ferrite rod original practic construction - OLUSHA-T from  Sergey Zadorozhny from Kiev:

http://sezador.radioscanner.ru/articles/solan-t.html

73!
Roman


> 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
-- 
73!
Roman, RW3ADB