{"id":50062,"date":"2024-01-05T19:30:08","date_gmt":"2024-01-05T17:30:08","guid":{"rendered":"https:\/\/www.cqdx.ru\/ham\/?p=50062"},"modified":"2024-01-05T19:32:06","modified_gmt":"2024-01-05T17:32:06","slug":"ojliter-ol-power-hf-ldmos-power-amplifier","status":"publish","type":"post","link":"https:\/\/www.cqdx.ru\/ham\/qro-qrp\/ojliter-ol-power-hf-ldmos-power-amplifier\/","title":{"rendered":"“OJLITER” OL POWER HF LDMOS Power Amplifier"},"content":{"rendered":"

AVAILABLE SOON FOR PRE-ORDER<\/strong><\/p>\n

\"\"<\/p>\n

An amplifier designed for the most demanding OMs who expect:<\/p>\n

SPECTRAL PURITY<\/span>
\nOne of the main objectives of the RF project was to significantly exceed the spurious signal suppression requirements illustrated in the international approval standard (ETSI 301 783 pti 5.2&5.3) for amateur radio equipment. To this end, OL-Power has a modular filtering section designed with extreme care and oversized in order to guarantee the best performance even at levels well above full power.<\/p>\n

THERMAL CONTROL<\/span>
\nIt is in the most demanding situations such as CONTESTS and DIGITAL modes where the quality of the design of an RF Amplifier can be assessed! It is to meet these requirements that OL-Power’s thermal design is very conservative. Equipped with a sophisticated temperature control system, assisted by multiple fans with progressive intervention, it can be equipped with a liquid heatsink with Peltier cells, so that the temperature of the LDMOS device always remains within safety limits. This guarantees long-lasting reliability, even in the most demanding jobs.<\/p>\n

RELIABILITY AND DURABILITY<\/span>
\nIt is well known that while LDMOS power FETs are extremely robust at output, they are highly sensitive to RF overdrive. For this reason, we have implemented a sophisticated control system that we have called “OL-Bias Control”. Combined with careful input circuit design, OL-Power offers a sophisticated combination that minimizes the risk of overdrive damage.<\/p>\n

FLEXIBILITY<\/span>
\nModern DIGITAL techniques and modern WEB-CLUSTERS require an operational speed that was once unimaginable. OL-Power offers the possibility of selecting the band in a fast and completely automated way. The presence of valid in-band signals is detected and will automatically trigger the switch to that band. A high-speed, ultra-low distortion solid-state switching circuit allows for very fast (>50wpm) full-power Kick-Down operation.
\nFurthermore, thanks to the possibility of using up to six selectable and tunable antenna connectors thanks to an ATU section available in THREE different versions, you will be able to totally forget about the range change which will take place completely automatically.<\/p>\n

AVAILABLE IN SEAMLESS OR PRE-ASSEMBLED KIT<\/span>
\nOL-POWER will be available in the form of BASE KIT (ec\/s components), SEAMLESS (pre-assembled boards with connectors) or in a totally
\nPRE-ASSEMBLED and calibrated version.
\nThe CASE can be customized by choosing one of the STANDARD models or by personalizing the graphics according to your aesthetic preferences.
\nThanks to the “intelligent” OL-BUS, the control board will automatically recognize the presence
\nor absence of the boards by automatically self-configuring itself.<\/p>\n

TECH SPECIFICATIONS:<\/strong><\/p>\n

Frequency Coverage:<\/strong>\u00a01.8-54 MHz (WARC and 60m included)
\nOperation Mode:<\/strong>\u00a0All plus Digital Mode
\nInput Drive Power:<\/strong>\u00a010-20 watts
\nAuto Band-change:<\/strong>\u00a0Yes (by internal frequency counter)
\nInput Circuit:<\/strong>\u00a0Broadband
\nTypical VSWR:<\/strong>\u00a01.2:1 maximum
\nVSWR Out Protection:<\/strong>\u00a02:1
\nPA Output Power:<\/strong>\u00a01.2 Kw
\nIMD3:<\/strong>\u00a0Better than -32 dBc (-38 dB PEP)
\nHarmonics Supp.:<\/strong>\u00a0HF = better than -50dB
\nVHF =<\/strong>\u00a0better than -60dBRF
\nOutput Filter:<\/strong>\u00a06 independent modular PCB , poles low-pass type, High voltage mica and porcelain capacitors.
\nIN\/OUT Impedance:<\/strong>\u00a050 ohms unbalanced (Amphenol\u2122 SO-239 connectors)
\nRF TRANSISTOR:<\/strong>\u00a0MRF NXP\u2122 LDMOS MOSFETs
\nAmplifier Circuitry:<\/strong>\u00a0Push pull AB class
\nALC:<\/strong>\u00a0Adjustable 0Vdc to -11 Vdc
\nCooling:<\/strong>\u00a0Forced air + liquid cooledAcoustic
\nNoise Level:<\/strong>\u00a058 dB(A) maximum
\nRX\/TX Switching Time:<\/strong>\u00a0Adjustable
\nRF Protections:<\/strong>\u00a0High VSWR, Wrong Band, High Output Power, Input Overdrive, Overtemperature
\nPower Supply Prot.:<\/strong>\u00a0Short circuit, Over current, Over voltage, Over temperature
\nPower ON:<\/strong>\u00a0soft- start circuit
\nMain Power Supply:<\/strong>\u00a048 to 54 VDC 50\/60 Hz (62 to 68 VDC for maw power OUT)
\nSize:<\/strong>\u00a0mm 335(H) X 135(W) X 365 (D)Weight: 55Kg<\/p>\n

BASIC VERSION CARDS:<\/strong><\/p>\n

– Pallet board without LDMOS
\n– LPF BUS with 7 filter ports
\n– TWO band filters to choose from
\n– TANDEM MATCH with MULTI-led
\n– DC POWER DIVIDER board
\n– CONTROL UNIT board with DISPLAY
\n– IN\/OUT board 1 input and 1 output
\n– DIGITAL SUPERVISOR board
\n– CABLES AND CONNECTORS<\/p>\n

OPTIONAL CARDS:<\/p>\n

– LDMOS 1.0 \/ 1.3 \/ 1.5 \/ 1.8 Kw
\n– 7 BAND FILTERS Cards
\n– Automatic Antenna Tuner Unit with coils
\n– Automatic Antenna Tuner Unit with RLC\/Pi
\n– Manual RLC\/Pi Tuner
\n– BAND DECODER Card
\n– Aluminum case
\n– Basic cooling kit
\n– Liquid cooling kit<\/p>\n

LDMOS – Pure Signal Technology\"\"Operating on the amateur radio bands from 1.8 MHz to 50 MHz, it uses a modern LDMOS device in order to obtain maximum efficiency with respect to the power absorbed. One of the objectives of our technicians was to guarantee high spectral purity, obtained with the use of mRX PURE – SIGNAL technology in the SDR version, a proprietary software capable of correcting the non-linearity of LDMOS devices by lowering the IMD and linearizing the output.<\/h4>\n

\u00a0Power: 1.0-1.3-1.5-1.8 Kw<\/strong><\/p>\n

Heavy Duty circuitry: choose the power you want!
\nWe know, power is never enough. And then you can decide, depending on the regulations of the country in which you operate, to install a more conservative 1.0 KW LDMOS or aim, in the case of less restrictive regulations, at 1.8 Kw.*
\nEvery single card, every single component, each OL-Power connector has in fact been largely oversized and selected to allow you to “push” to the maximum.<\/p>\n

*Note: it is the user’s responsibility to adapt the output power to the “Maximum Legal Power” required by the authorities in their country.<\/p>\n

Modular filter section<\/strong><\/p>\n


\n\"\"<\/strong>
\nYou can choose to install up to 7 ranges.
\nWithout a shadow of a doubt, the filter section is the heart, together with the power unit, of every self-respecting amplifier. OL-Power features a modular LPF filter section designed to suppress harmonics and guarantee excellent spectral purity.
\nThanks to the modular design, everyone will be able to decide to install exclusively the band filters of their interest. The Kit is supplied with 2 band filters, you can optionally add another 5 optional filters.
\nYou can easily insert the filter into the appropriate slot, without the need for other operations. The control unit will automatically recognize the filters installed, enabling the transmission band:<\/p>\n

AVAILABLE FILTERS:<\/span>
\n– 1.8 – 2.0 Mhz
\n– 3.5 – 4.0 Mhz
\n– 7.0 – 10.2 Mhz
\n– 14.0 – 18.0Mhz
\n– 18.0 – 21.5 Mhz
\n– 24.0 – 30.0 Mhz
\n– 50.0 – 54.0 Mhz<\/p>\n

Conservative thermal design<\/strong><\/p>\n

\"\"To always guarantee the max. power<\/span>
\nExcellent spectral cleaning, better efficiency, lower consumption… all this thanks to the sophisticated microprocessor and the advanced firmware that our experts have designed, to control all the vital parameters such as, for example, the temperature which, thanks to a conservative thematic design of the printed and of the cooling\/control system, maintains the junction temperature of the LDMOS transistor within limits that guarantee maximum reliability, even in intense Full Legal Power use.<\/p>\n

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

AVAILABLE SOON FOR PRE-ORDER An amplifier designed for the most demanding OMs who expect: SPECTRAL PURITY One of the main objectives of the RF project was to significantly exceed the spurious signal suppression requirements illustrated in the international approval standard (ETSI 301 783 pti 5.2&5.3) for amateur radio equipment. To this end, OL-Power has a…<\/p>\n","protected":false},"author":1,"featured_media":50063,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[10],"tags":[37,552,346],"class_list":["post-50062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-qro-qrp","tag-amplifier","tag-ldmos","tag-power","category-10","description-off"],"_links":{"self":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts\/50062","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/comments?post=50062"}],"version-history":[{"count":0,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts\/50062\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/media\/50063"}],"wp:attachment":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/media?parent=50062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/categories?post=50062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/tags?post=50062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}