{"id":551,"date":"2020-04-21T11:51:09","date_gmt":"2020-04-21T11:51:09","guid":{"rendered":"https:\/\/overlandtravel.org\/radio\/?page_id=551"},"modified":"2022-07-06T07:22:26","modified_gmt":"2022-07-06T07:22:26","slug":"r-809m2-armejskaja-ukv-radiostancija","status":"publish","type":"page","link":"https:\/\/overlandtravel.org\/radio\/r-809m2-armejskaja-ukv-radiostancija\/","title":{"rendered":"R-809M2 VHF radio station"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-1.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-1.jpg\" alt=\"R-809M2 VHF Radiostation for the identified first air zone. We used mostly just as a backup radio for the connection with the aircraft on short distances.\" class=\"wp-image-1190\" title=\"R-809M2 VHF Radiostation\"\/><\/a><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>R-809M2 VHF Radiostation for the identified first air zone. We used mostly just as a backup radio for the connection with the aircraft on short distances. <\/strong><\/h2>\n\n\n\n<p>The radio is equipped with the semiconductor outside of the output stage of the transmitter, which is fitted with 3x used 1P24. Range of working frequencies 100MHz &#8211; 149,975 MHz adjustable using the radio buttons in the grid of around 25kHz. A total of 2000 channels. The receiver radio is a superhet with dvoj\u00edmsm\u011b\u0161ov\u00e1n\u00edm and his involvement is the same as for the receiver type R-870M. The declared RF output of the transmitter is 500mW.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-2.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-2.jpg\" alt=\"R-809M2 VHF Radiostation for the identified first air zone. We used mostly just as a backup radio for the connection with the aircraft on short distances.\" class=\"wp-image-1186\" title=\"R-809M2 VHF Radiostation\"\/><\/a><\/figure>\n<\/div>\n\n\n<p>The receiver and oscillator is solved exactly the same as receiver for R-870M. The radio station was supplied speaker with built-in active amplifier. The supply voltage to the station is 11 &#8211; 13,5 V can be powered in two ways. Of the two accumulators 2NKN-24 in a separate box. Power source from the network 220\/127V AC. This source can even recharge the battery block containing the battery 2NKN-24. Power consumption of the radio during transmission is about 12W.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-3.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-3.jpg\" alt=\"R-809M2 VHF Radiostation for the identified first air zone. We used mostly just as a backup radio for the connection with the aircraft on short distances.\" class=\"wp-image-1187\" title=\"R-809M2 VHF Radiostation\"\/><\/a><\/figure>\n<\/div>\n\n\n<p>The receiver was a superheterodyne with two frequency conversions, the first heterodyne was a main oscillator with manual tuning and an automatic frequency control system. The reference signal for the AFC is a quartz synthesizer. The low-frequency output of the receiver is designed to connect two pairs of low-impedance or high-impedance headphones and an external loudspeaker with a built-in ULF. The modulation input of the transmitter is designed to connect a headset with a microphone amplifier. The output stage of the transmitter is tube. 2 lamps 1P24B. To power the radio station in stationary conditions, a power supply is used.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-4.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-4.jpg\" alt=\"R-809M2 VHF Radiostation for the identified first air zone. We used mostly just as a backup radio for the connection with the aircraft on short distances.\" class=\"wp-image-1188\" title=\"R-809M2 VHF Radiostation\"\/><\/a><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\"><li>Receiving and transmitting frequency range: from 100 to 149.975 MHz <\/li><li>Battery supply: 11 \u2026 13.5 V (average 12.5 V) <\/li><li>Reception sensitivity: 6 \u03bcV <\/li><li>Display and frequency setting by digit switches (25 kHz resolution) <\/li><li>Output transmitter power: 0.5 W <\/li><li>Maximum frequency deviation from the nominal: no more than 15 kHz<\/li><\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-5.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/ra3dak.com\/radio-equipment-image\/wp-content\/uploads\/2022\/03\/R-809M2-VHF-Radiostation-5.jpg\" alt=\"R-809M2 VHF Radiostation for the identified first air zone. We used mostly just as a backup radio for the connection with the aircraft on short distances.\" class=\"wp-image-1189\" title=\"R-809M2 VHF Radiostation\"\/><\/a><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>R-809M2 VHF Radiostation for the identified first air zone. We used mostly just as a backup radio for the connection with the aircraft on short distances. The radio is equipped with the semiconductor outside of the output stage of the transmitter, which is fitted with 3x used 1P24. Range of working frequencies 100MHz &#8211; 149,975 &#8230; <a title=\"R-809M2 VHF radio station\" class=\"read-more\" href=\"https:\/\/overlandtravel.org\/radio\/r-809m2-armejskaja-ukv-radiostancija\/\" aria-label=\"Read more about R-809M2 VHF radio station\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-551","page","type-page","status-publish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>R-809M2 VHF radio station - HAM RADIO RA3DAK<\/title>\n<meta name=\"description\" content=\"R-809M2 VHF radio station, made according to the transceiver circuit. 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