{"id":1560,"date":"2016-05-11T15:00:30","date_gmt":"2016-05-11T19:00:30","guid":{"rendered":"http:\/\/www.alpharfsystems.com:4080\/?p=1560"},"modified":"2026-01-30T15:57:52","modified_gmt":"2026-01-30T20:57:52","slug":"alpha-87a-autotune-hf-amplifier","status":"publish","type":"post","link":"https:\/\/www.alpharfsystems.com\/?p=1560","title":{"rendered":"Alpha 87A"},"content":{"rendered":"

<\/p>\n

Alpha 87A\u00a0Autotune HF Amplifier<\/strong><\/p>\n

The Alpha 87A is capable of 1.5kW continuous RF output on all commonly used modes and on any authorized amateur frequency from 1.8 to 29.7 MHz. Band change and tune-up are microprocessor controlled.
\nCapable of full CW break-in (QSK) and all digital modes when used with any appropriate transceiver.<\/p>\n

AlphaMax Firmware to upgrade 87A amplifiers built before 1999 is no longer available in our web store<\/strong><\/p>\n

Alpha 87A Fuses – Available from Mouser or Digikey.:<\/p>\n

Micro Fuse, 2 Amp 125V, Part Number FSX-X123<\/p>\n

Littlefuse 0273002.H
\nUsed on the 87A T\/R board and 87A LVPS<\/p>\n

Micro fuse , 0.25 Amp 125V, Part Number FSX-X130<\/p>\n

Littelfuse 0273.250H
\nAlpha 87A T\/R module and 86 T\/R Board<\/p>\n

Alpha 87A Switches – Available from Mouser or Digikey.<\/strong>:<\/p>\n

87A OPR\/STBY, HI\/LO<\/div>\n
\n
Alpha p\/n SQR<\/span>-X109<\/div>\n
\n
Digikey EG1528-ND<\/div>\n
Mouser 612-R5CBLKBLKEF0<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
87A ON, OFF<\/div>\n
Alpha p\/n SQR<\/span>–X110<\/span><\/div>\n
Digikey R5EBLKBLKEF0-ND<\/div>\n<\/div>\n<\/div>\n

Documentation<\/strong><\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
87A Communications to PC<\/td>\n87A_Communications_to_PC<\/a><\/td>\n<\/tr>\n
87A AlphaRemote software (Windows)<\/td>\nalpharemote<\/a><\/td>\n<\/tr>\n
87A Using AlphaMax Function<\/td>\n87A Using AlphaMax Firmware<\/a><\/td>\n<\/tr>\n
87A Receive Loss<\/td>\nAlpha_87A_Receive_Loss<\/a><\/td>\n<\/tr>\n
87A Manual with Simplified Schematic and Functional Block Diagram<\/td>\n87A_Manual_2016<\/a><\/td>\n<\/tr>\n
87A Full Schematics<\/td>\n87A_full_schematics<\/a><\/td>\n<\/tr>\n
<\/td>\n87A_Manual_fig-9<\/a><\/td>\n<\/tr>\n
<\/td>\n87A_Manual_fig-10<\/a><\/td>\n<\/tr>\n
87A Parts list<\/td>\nPARTS_LIST_-_ALPHA_87A<\/a><\/td>\n<\/tr>\n
87A Tubedeck Blower Replacement Procedure<\/td>\n87a_Blower_Replacement_1<\/a><\/td>\n<\/tr>\n
Installing Dayton Blower Motor<\/td>\nDayton_4M07X_On_Original_Bracket<\/a><\/td>\n<\/tr>\n
87A AlphaMax manual<\/td>\nAlphaMax<\/a><\/td>\n<\/tr>\n
Alpha Amplifier Production Dates<\/td>\nAlpha_Amplifier_Production_Dates<\/a><\/td>\n<\/tr>\n
Alpha Amplifier Keying Specs<\/td>\nAmp_Keying_Specs<\/a><\/td>\n<\/tr>\n
Hyperterminal<\/td>\nhyperterminal<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":5,"featured_media":1572,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-1560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-discontinued-products"],"_links":{"self":[{"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=\/wp\/v2\/posts\/1560","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1560"}],"version-history":[{"count":18,"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=\/wp\/v2\/posts\/1560\/revisions"}],"predecessor-version":[{"id":3913,"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=\/wp\/v2\/posts\/1560\/revisions\/3913"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=\/wp\/v2\/media\/1572"}],"wp:attachment":[{"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpharfsystems.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}