[CQ-Contest] Multi 2 locking device, TriPlexers and BPF

[Andrey Fedorishchev]

As the link to our products way too incorrect, I feel free to post it here:

The full line of TriPlexers (3 power levels) as well as DiPlexers and
QuadPlexers is here: http://lowbandsystems.com/collection/di-tri-quadro-
plexers-2

it is sold in NA by DXEngineering, and few others in EU
http://lowbandsystems.com/collection/international-distribution

And of course we have also accompanying 200 and 500 and 1500W line of band
pass filters.

P.S.

Igor, I would be careful to name someones`s production " the best" without
quantitative test by independent source


P.P.S.
The story of designing and building triplexer (first ever at HF) plus
accompanying BPF, in 2008 preparation for the WRTC-2010 in Moscow, is still
to be written for descendants and followers :)


-----
Date: Sat, 7 Jan 2017 16:19:00 +0500
From: "Igor Sokolov" <ua9cdc at gmail.com>
To: <john at kk9a.com>,    <cq-contest at contesting.com>
Subject: Re: [CQ-Contest] Multi 2 locking device?
Message-ID: <3D47985DFBFF42918BAE5615A2271E16 at cdcmobile>
Content-Type: text/plain; format=flowed; charset="UTF-8";
        reply-type=original

1) Two LP on different bands with different antennas - use
http://microham.com/contents/en-us/d75.html or
http://quad.ru/production/switchSO2R.php The latter has better port
isolation. WX0B six pack has much poorer port isolation then the above
mentioned two switches). For home brew switch project try here
http://www.sj2w.se/contest/?page_id=1547  and here
http://kk1l.com/kk1l_2x6switch/

2) Two LP on different bands using the same multiband antenna - in addition
to the abobe switch you will need triplexer and band pass  filters. The best
combo one is by VA6AM (ex UN7LG)
http://un7lg.shawwebspace.ca/blog/post/triplexer_with_bpfs_combo_unit/
There are also W2NQN filters (good), UA4CC filters
http://quad.ru/production/bpf.php (very good), RA6LBS triplexer
http://quad.ru/production/bpf.php, There are also INRAD and DUNESTAR
triplexers but VA6AM seems to be the best (see here
http://un7lg.shawwebspace.ca/blog/post/high_quality_200_watts_hf_triple)
VA6AM has got all the info for building home brew triplexer and filters.
5B5AGN has the info for building BPF here
http://ac0c.com/main/page_so2r_5b4agn_bpf_modules.html
Also a lot of (but not complete) info can be found here
http://www.k8nd.com/Radio/SO2R/SO2R_Products.htm





73, Igor UA9CDC
---



-- 
Andrey Fedorishchev,
RA6LBS

http://lowbandsystems.com/