{"id":154,"date":"2016-11-11T11:23:02","date_gmt":"2016-11-11T11:23:02","guid":{"rendered":"http:\/\/lz2jr.com\/blog\/?page_id=154"},"modified":"2020-10-26T15:14:47","modified_gmt":"2020-10-26T13:14:47","slug":"qrp-hf-transceiver","status":"publish","type":"page","link":"https:\/\/lz2jr.com\/blog\/index.php\/qrp-hf-transceiver\/","title":{"rendered":"QRP HF Transceiver"},"content":{"rendered":"<p style=\"text-align: left;\">Hello everybody and thanks for your attention on the most interesting and educational theme in HAM radio hobby &#8211; HOMEBREWING. As from now on I will post here my experience with the most advanced project in my HAM practice &#8211; Building a HAM radio shortwave all mode transceiver.<\/p>\n<p style=\"text-align: left;\"><a class=\"highslide img_1\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/IMG_3551-1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-232\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/IMG_3551-1-300x225.jpg\" alt=\"img_3551\" width=\"100\" height=\"75\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/IMG_3551-1-300x225.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/IMG_3551-1-768x576.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/IMG_3551-1-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/><\/a><a class=\"highslide img_2\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/argo-one-front1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-230\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/argo-one-front1-300x225.jpg\" alt=\"argo-one-front1\" width=\"100\" height=\"75\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/argo-one-front1-300x225.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/argo-one-front1-768x576.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/argo-one-front1-1024x768.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/argo-one-front1.jpg 1280w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/><\/a><a class=\"highslide img_3\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/LCD-gd04611.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-229\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/LCD-gd04611-300x225.jpg\" alt=\"lcd-gd04611\" width=\"99\" height=\"74\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/LCD-gd04611-300x225.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/LCD-gd04611-768x576.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/LCD-gd04611-1024x768.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/LCD-gd04611.jpg 1280w\" sizes=\"auto, (max-width: 99px) 100vw, 99px\" \/><\/a><a class=\"highslide img_4\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/FACE-PLATE-new-CPU-FRONT-PCB.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-231\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/FACE-PLATE-new-CPU-FRONT-PCB-300x163.jpg\" alt=\"face-plate-new-cpu-front-pcb\" width=\"136\" height=\"74\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/FACE-PLATE-new-CPU-FRONT-PCB-300x163.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/FACE-PLATE-new-CPU-FRONT-PCB-768x418.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/11\/FACE-PLATE-new-CPU-FRONT-PCB-1024x557.jpg 1024w\" sizes=\"auto, (max-width: 136px) 100vw, 136px\" \/><\/a><\/p>\n<p><strong>Main goals of the project:<\/strong><\/p>\n<ul>\n<li style=\"text-align: left;\">Classic superhet design &#8211; with popular 9MHz intermediate frequency. Filter method <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/mic-amplifier-dsb-cw-modulator-unit-ssbgen\/\"><strong>DSB<\/strong><\/a> to SSB modulation<\/li>\n<li style=\"text-align: left;\">Coverage of the 9 HAM HF bands (160m optional)<\/li>\n<li style=\"text-align: left;\">High dynamic range receiver design including high IP3 monolithic IC in the front end and H-mode first mixer<\/li>\n<li style=\"text-align: left;\">Fast acting IF (134kHz) AGC.<\/li>\n<li style=\"text-align: left;\">Clickless operation &#8211; solid state GaAs PHEMT SPDT switches on RX, (<a href=\"https:\/\/lz2jr.com\/blog\/index.php\/band-pass-filters\/\"><strong>bandpass filters<\/strong><\/a>; <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/low-pass-filter-block\/\"><strong>TX\/RX<\/strong><\/a>) and ultra fast rectifier diodes (<a href=\"https:\/\/lz2jr.com\/blog\/index.php\/low-pass-filter-block\/\"><strong>LPF<\/strong><\/a>)<\/li>\n<li style=\"text-align: left;\">Custom multicolor <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/custom-multicolor-backlit-fstn-lcd-for-hf-qrp-transceiver-project\/\"><strong>FSTN LCD<\/strong><\/a> (Especially developed for this project)<\/li>\n<li style=\"text-align: left;\">Custom made <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/face-panel-mold-plastics-or-aluminum-machined\/\"><strong>plastic face plate<\/strong><\/a>, unique and ergonomic <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/custom-made-control-knobs\/\"><strong>knob controls<\/strong><\/a><\/li>\n<li style=\"text-align: left;\">Custom made crystal filters &#8211; 6,8 pole, CF=9MHz, 2.8kHz,<a href=\"https:\/\/lz2jr.com\/blog\/index.php\/crystal-filter-9mhz-2-7khz\/\"><strong> 2.7kHz<\/strong><\/a>, 1kHz, 500Hz<\/li>\n<li style=\"text-align: left;\">Double CPU circuitry control for front panel and mother board, both field programmable via implemented USB hub<\/li>\n<\/ul>\n<p><a class=\"highslide img_5\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.2-1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-151\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.2-1-300x202.jpg\" alt=\"transceiver-capture-2-2\" width=\"226\" height=\"152\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.2-1-300x202.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.2-1-768x517.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.2-1-1024x690.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.2-1.jpg 1361w\" sizes=\"auto, (max-width: 226px) 100vw, 226px\" \/>&nbsp; <\/a><a class=\"highslide img_6\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-131\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.1-300x205.jpg\" alt=\"transceiver-capture-2-1\" width=\"222\" height=\"152\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.1-300x205.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.1-768x525.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.1-1024x700.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-2.1.jpg 1288w\" sizes=\"auto, (max-width: 222px) 100vw, 222px\" \/><\/a><\/p>\n<ul>\n<li><a href=\"https:\/\/lz2jr.com\/blog\/index.php\/block-interconnection-diagram\/\"><strong>Modular construction<\/strong><\/a> with no &#8220;flying wires&#8221; inside the box. Transceiver is built up on a main &#8211; mother board which has two functions. First to serve as a &#8220;chassis&#8221; and second to fit all the external connectors, daughter boards, inter-connections and acts as cable harness.<\/li>\n<li>Plenty of optional modules: Audio filters, Automatic antenna tuner (ATU), Noise blanker (NB), narrow\/wide band IF crystal filters.<\/li>\n<li>Linear final amplifier <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/mosfet-linear-power-amplifier-50-watts\/\"><strong>PA 50W<\/strong><\/a> with precise power adjustment especially for QRP operations. Forget noisy FANs &#8211; 25W&nbsp; &#8211; unlimited time!! QRO work &#8211; with max power of 50W driving should be sufficient for a kilowatt amplifier.<\/li>\n<\/ul>\n<p><a class=\"highslide img_7\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-8.1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-145\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-8.1-300x142.jpg\" alt=\"transceiver-capture-8-1\" width=\"209\" height=\"99\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-8.1-300x142.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-8.1-768x362.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-8.1-1024x483.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-8.1.jpg 1564w\" sizes=\"auto, (max-width: 209px) 100vw, 209px\" \/><\/a>&nbsp;&nbsp; <a class=\"highslide img_8\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-6.2.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-141\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-6.2-300x152.jpg\" alt=\"transceiver-capture-6-2\" width=\"193\" height=\"98\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-6.2-300x152.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-6.2-768x390.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-6.2-1024x519.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-6.2.jpg 1179w\" sizes=\"auto, (max-width: 193px) 100vw, 193px\" \/>&nbsp; <\/a><a class=\"highslide img_9\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-7.1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-143\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-7.1-300x120.jpg\" alt=\"transceiver-capture-7-1\" width=\"243\" height=\"97\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-7.1-300x120.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-7.1-768x308.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-7.1-1024x411.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-7.1.jpg 1634w\" sizes=\"auto, (max-width: 243px) 100vw, 243px\" \/><\/a><\/p>\n<ul>\n<li>Personal computer control CAT via USB<\/li>\n<li>Morse code keyer (Curtis A, CMOS B)<\/li>\n<li>Contest and DX-pedition operation conveniences<\/li>\n<\/ul>\n<p><a class=\"highslide img_10\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-3.1-1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-152\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-3.1-1-300x253.jpg\" alt=\"transceiver-capture-3-1\" width=\"155\" height=\"130\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-3.1-1-300x253.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-3.1-1-768x648.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-3.1-1-1024x864.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-3.1-1.jpg 1052w\" sizes=\"auto, (max-width: 155px) 100vw, 155px\" \/><\/a> &nbsp;&nbsp; <a class=\"highslide img_11\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-4.1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-136\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-4.1-300x300.jpg\" alt=\"transceiver-capture-4-1\" width=\"130\" height=\"130\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-4.1-300x300.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-4.1-150x150.jpg 150w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-4.1-768x766.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-4.1.jpg 905w\" sizes=\"auto, (max-width: 130px) 100vw, 130px\" \/> &nbsp;&nbsp; <\/a><a class=\"highslide img_12\" href=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-5.1.jpg\" onclick=\"return hs.expand(this)\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-138\" src=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-5.1-300x212.jpg\" alt=\"transceiver-capture-5-1\" width=\"187\" height=\"132\" srcset=\"https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-5.1-300x212.jpg 300w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-5.1-768x543.jpg 768w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-5.1-1024x725.jpg 1024w, https:\/\/lz2jr.com\/blog\/wp-content\/uploads\/2016\/10\/Transceiver-Capture-5.1.jpg 1289w\" sizes=\"auto, (max-width: 187px) 100vw, 187px\" \/><\/a><\/p>\n<ul>\n<li>Both Kit &amp; Ready-to-Run versions will be available<\/li>\n<li>Expected start &#8211; First quarter of 2017<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Please note that some of the schematics and boards might be obsolete up to current date. Please have a look at <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/category\/uncategorized\/hf-home-made-transceiver\/manuals\/\"><strong>manual section<\/strong><\/a> and <a href=\"https:\/\/lz2jr.com\/blog\/index.php\/category\/uncategorized\/hf-home-made-transceiver\/firmware-files\/\"><strong>firmware files<\/strong><\/a> to get familiar with latest schematics and firmware.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hello everybody and thanks for your attention on the most interesting and educational theme in HAM radio hobby &#8211; HOMEBREWING. As from now on I will post here my experience with the most advanced project in my HAM practice &#8211;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-154","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/pages\/154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=154"}],"version-history":[{"count":19,"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/pages\/154\/revisions"}],"predecessor-version":[{"id":841,"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/pages\/154\/revisions\/841"}],"wp:attachment":[{"href":"https:\/\/lz2jr.com\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}