{"id":1217,"date":"2012-02-10T15:15:57","date_gmt":"2012-02-10T15:15:57","guid":{"rendered":"http:\/\/lefars.org.uk\/WPblog\/?p=1217"},"modified":"2012-02-10T15:16:09","modified_gmt":"2012-02-10T15:16:09","slug":"ft-817-afsk-data-interface-using-smd-components","status":"publish","type":"post","link":"https:\/\/lefars.org.uk\/WPblog\/ft-817-afsk-data-interface-using-smd-components\/","title":{"rendered":"FT-817 AFSK data interface using SMD components"},"content":{"rendered":"

I decided to build one of the K6XX data leads using SMT. First, the circuit.<\/p>\n

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

Next, A nice copper clad board, begging for the hacksaw.<\/p>\n

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

Like a knife through butter.<\/p>\n

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

The Circuit design is now cut into the board using a Stanley knife.\"\"<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

A 10k ohm 0805 resistor and MMTB3904, waiting to be mounted onto their new home.\"\"<\/a><\/p>\n

Home sweet home.\"\"<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

The board is now soldered to pins 4 and 5 of the DB9 (PTT control).<\/p>\n

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

Fits very nicely into the DB9 Hood.\"\"<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

A 40dB pad added into the mic plug for the pc sound card; a 100 ohm resistor to ground and 10k ohm to tip (both resistors joined at top).\"\"<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

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

Further reading:<\/p>\n

Other technical articles by Bob K6XX here<\/a>
\nFT-817 page from the K6XX website here<\/a><\/p>\n

73<\/p>\n

 <\/p>\n

Derek M0XDC\u00a0 (email: m0xdc@lefars.org.uk<\/a>)<\/p>\n

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

I decided to build one of the K6XX data leads using SMT. First, the circuit. Next, A nice copper clad board, begging for the hacksaw. Like a knife through butter. The Circuit design is now cut into the board using … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"gallery","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10],"tags":[64,63],"class_list":["post-1217","post","type-post","status-publish","format-gallery","hentry","category-home-construction","tag-ft-817-afsk-cable-smd-interface","tag-k6xx","post_format-post-format-gallery"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p22sia-jD","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts\/1217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/comments?post=1217"}],"version-history":[{"count":4,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts\/1217\/revisions"}],"predecessor-version":[{"id":1231,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts\/1217\/revisions\/1231"}],"wp:attachment":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/media?parent=1217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/categories?post=1217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/tags?post=1217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}