{"id":36604,"date":"2013-12-13T00:00:21","date_gmt":"2013-12-12T22:00:21","guid":{"rendered":"http:\/\/www.cqdx.ru\/ham\/?p=36604"},"modified":"2023-10-08T09:13:40","modified_gmt":"2023-10-08T07:13:40","slug":"heros-technology-ltd-scr-preselector-cat","status":"publish","type":"post","link":"https:\/\/www.cqdx.ru\/ham\/new-equipment\/heros-technology-ltd-scr-preselector-cat\/","title":{"rendered":"HEROS Technology Ltd. SCR HF Preselector-CAT"},"content":{"rendered":"

High-performance Software Controlled Radio Preselector. 1.8MHz to 50MHz tunable Band-Pass Filter bank. Digital tuning.<\/p>\n

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

The SCR Preselector-CAT is suitable to work with SDR or Analogue radios. It is connected in line between the antenna and your receiver or transceiver providing filtering of R.F.spectrum in order to reduce broadband energy and conforming signals before reaching the receiver. Useful in front of strong Near Vertical Incidence Signals (NVIS) propagation situation. In addition it provides rejection of signals from MW AM and VHF FM broadcast bands, removes strong broadband emissions radiated back to the antenna from quadrature mixers and attenuates signals in the VHF region that could mix with the sampling frequency of the analogue to digital data converter in SDR radios.
\nCAT remote control. Tracking feature
\nCAT (Computer Aided Transceiver), serial data communication protocol over Virtual Com Port (VCP) enables the SCR preselector-CAT to provide the user with a way to interface with several radios. The SCR Preselector-CAT acts as a passive listener translating valid CAT commands into specific instructions.<\/p>\n

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

Five operating modes:<\/strong><\/p>\n

Stand-alone mode:<\/p>\n

by means of its own control knobs.<\/p>\n

Remote modes:<\/strong><\/p>\n

– Graphic User Interface (GUI). Remote console on PC.
\n– CAT serial protocol over Virtual Com Port (VCP), (Kenwood TS-2000 protocol)
\n– Over the Internet or Local Network. (TCP\/IP protocol).
\n– I2C bus from an external dedicated controller.<\/p>\n

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

Technical features:<\/strong><\/p>\n

\u25a0 Six selectable bands and preselector By-Pass.
\n\u25a0 Five Tuneable Band Pass Filter bank for HF Bands covering 1.8 to 30 MHz plus 50MHz band BPF.
\n\u25a0 All filters are LC passive. No active switching or amplifier devices in the signal path, (LNA Off), therefore it does not contribute to IMD (Intermodulation Distortion).
\n\u25a0 Very high linearity (IP3). Suitable for Software Define Radios and analogue receivers.
\n\u25a0 PTT feature enables connecting in-line with a 100Watts transceiver allowing to by-pass the preselector in transmission.(with Dual By-Pass relay accessory).
\n\u25a0 Two antenna inputs and one antenna output lets insert a converter, filter, etc between the antenna and the Preselector.
\n\u25a0 0dB, 6dB, 12dB, 18dB input attenuator using MiniCircuits PAT series dedicated attenuation cells.
\n\u25a0 Embedded -110dB stop band Broadcast Band Rejection Filter. (AKA BCB filter, Brick Wall filter, MW band killer filter).
\n\u25a0 Six Band Pass Filters.
\n\u25a0 Tuning coils wound on large toroid cores T-106 size, rated for 100Watts RF applications, avoiding saturation in front of large signals.
\n\u25a0 Band Pass Filters have Notch filters centered on the adjacent amateur bands giving an exceptional stop-band attenuation.
\n\u25a0 Digital tuning. Nine bits variable digital capacitor. One pF resolution. (Variable capacitor emulator).
\n\u25a0 Two embedded 7th order, 60MHz, Elliptic Low Pas Filter for FM broadcast band rejection and sampling frequency attenuation.
\n\u25a0 Switchable low noise amplifier (LNA). 25dB Gain, 38dB IP3, 2.7dB Noise Figure.
\n\u25a0 12V DC\/1Amp DC max. output connector for an external 150 Watts RF rating Input\/Output by-pass dual power relay. (PTT or Keying line activated).
\n\u25a0 Power supply: 12Volts DC\/ 0.5Amp max. 2.5mm plug power connector.
\n\u25a0 Dimension: 220mm x 165mm x 52mm (8.661 x 6.496 x 2.047in).
\n\u25a0 Weight: 1.5Kg.<\/p>\n

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

USB<\/strong><\/p>\n

\u25a0 Full speed USB v2.0 compliant.
\n\u25a0 Plug and Play feature.
\n\u25a0 USB type B connector.
\n\u25a0 ESD protection on USB lines.
\n\u25a0 Optocoupled USB sense signal.
\n\u25a0 Optional USB Galvanic Isolator available.<\/p>\n

I2C bus (external controller is needed)<\/strong><\/p>\n

\u25a0 I2C bus external lines Galvanically isolated(ADuM1251).
\n\u25a0 8 bits standard I2C serial bus interface.
\n\u25a0 Supports 100Kbits\/s and 400kbits\/s FAST I2C Bus protocol.
\n\u25a0 Mini Din connector for I2C control lines.
\n\u25a0 Compatible with most microcontrollers.<\/p>\n

Link<\/a><\/p>\n

Price<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

High-performance Software Controlled Radio Preselector. 1.8MHz to 50MHz tunable Band-Pass Filter bank. Digital tuning. The SCR Preselector-CAT is suitable to work with SDR or Analogue radios. It is connected in line between the antenna and your receiver or transceiver providing filtering of R.F.spectrum in order to reduce broadband energy and conforming signals before reaching the…<\/p>\n","protected":false},"author":2,"featured_media":36605,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[8],"tags":[304],"class_list":["post-36604","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-new-equipment","tag-new-equipment-2","category-8","description-off"],"_links":{"self":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts\/36604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/comments?post=36604"}],"version-history":[{"count":0,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts\/36604\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/media\/36605"}],"wp:attachment":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/media?parent=36604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/categories?post=36604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/tags?post=36604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}