{"id":9740,"date":"2022-03-19T05:46:52","date_gmt":"2022-03-19T11:46:52","guid":{"rendered":"http:\/\/play.fallows.ca\/wp\/?p=9740"},"modified":"2022-03-01T14:09:49","modified_gmt":"2022-03-01T21:09:49","slug":"using-your-antenna-multicoupler-with-several-receivers","status":"publish","type":"post","link":"https:\/\/play.fallows.ca\/wp\/radio\/shortwave-radio\/using-your-antenna-multicoupler-with-several-receivers\/","title":{"rendered":"Using Your Antenna Multicoupler with Several Receivers"},"content":{"rendered":"

\"antenna<\/a><\/p>\n

My 8 channel antenna multicoupler, receive only, is back in use and performs magnificently for receive use. <\/p>\n

Recently, I acquired a used NCC-1 phaser to I could use my wideband loop array with some single channel receivers. This works great with my Flex 6300 and Perseus SDR. I used an RG6 splitter with F-connectors to send the phaser output to both receivers at the same time.<\/p>\n

But coax splitters introduce loss and raise the noise floor. Typically, you loose 3.5 dB of signal for each split. Then, I remembered a wonderful antenna multicoupler that I had stored the furnace room. Shown above is the M-50-8 antenna multicoupler.<\/p>\n

One signal in, with 8 outputs and no loss!<\/p>\n

Back 20 years ago, RF Tech made this multicoupler which was sold through W. J. Ford Surplus Enterprises in Smith Falls, Ontario, Canada. I bought one back then for CDN $300. W. J. Ford stopped doing business in 2006, but I hung on to this (largely underused) gem.<\/p>\n

Now, it’s back in use and lets me listen to my wideband loop array, through the NCC-1 phased on both the Perseus and Flex 6300 at the same time.<\/p>\n

RF Tech M-50-8 Antenna Multicoupler<\/h2>\n

My M-50-8 antenna multicoupler was Canadian made, and sold between 2000-2006. All eight outputs were internally terminated 50 \u03a9 BNC connectors. Covering 10 kHz to 300 MHz, it offered 1 dB gain, a 2 dB noise figure, and 2\/3 order intercepts of around 45 dBm. I can vouch for the headroom, as it handles my local high power BCB signals well.<\/p>\n

It runs off normal A\/C with a linear power supply and no EMI\/RFI. Port-to-port isolation is around 25 dB. If you can find one of these, they offer a wonderful approach to using many receivers with just a single antenna, all the way through to UHF.<\/p>\n

You can still buy an antenna multicoupler from Cross Country Wireless<\/a> or Stridsberg<\/a> for around US$200.<\/p>\n","protected":false},"excerpt":{"rendered":"

My 8 channel antenna multicoupler, receive only, is back in use and performs magnificently for receive use.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_share_on_mastodon":"0"},"categories":[6,7],"tags":[246,239,38,22],"series":[],"class_list":["post-9740","post","type-post","status-publish","format-standard","hentry","category-shortwave-radio","category-software-defined-radio","tag-hamr","tag-hamradio","tag-sdr","tag-swl"],"yoast_head":"\nUsing Your Antenna Multicoupler with Several Receivers - 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