{"id":16040,"date":"2015-12-08T07:05:34","date_gmt":"2015-12-08T11:05:34","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=16040"},"modified":"2015-12-08T07:05:34","modified_gmt":"2015-12-08T11:05:34","slug":"michael-comments-on-the-squires-sanders-ss-ibs","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2015\/12\/michael-comments-on-the-squires-sanders-ss-ibs\/","title":{"rendered":"Michael comments on the Squires Sanders SS-IBS"},"content":{"rendered":"

\"s-l1600\"<\/a><\/p>\n

Regarding the Squires Sanders SS-IBS Dan recently spotted on eBay<\/a>, SWLing Post<\/em> reader, Michael Black comments:<\/p>\n

[The\u00a0Squires Sanders SS-IBS is]\u00a0a legendary receiver that either brought new ideas to receivers, or brought them to the amateur radio level.<\/p>\n

There’s an article in QST in 1963 from Squires about this new stuff, I’ve never seen it so I don’t know if he’s talking in abstract terms, or revealing this receiver.<\/p>\n

A big difference is that there’s no RF amplifier before the mixer, and the mixer is balanced. But he throws some of that out by going to double conversion, I assume for tuning reasons. The first IF is 500KHz wide, the first oscillator is crystal controlled and the second oscillator is variable, as seen in top end receivers of the day. The alternative would be a tuneable oscillator that was switched per band (instability from the switch, and the higher the band, the higher the frequency, hence stability) or mixing the tuneable oscillator with a crystal oscillator before feeding the first mixer, which can cause spurs without proper filtering).<\/p>\n

The second IF is 1MHz, and having a filter so high was relatively new, though maybe some rigs had moved up to HF filters at the time.<\/p>\n

It apparently is fussy about the antenna, or matching, because of the lack of RF amplifier.<\/p>\n

Soon there’d be receivers that converted to 9MHz or so directly, saying goodbye to most image problems. Heathkit had a general coverage receiver later in the sixties that had an IF, with crystal filter, at 1680KHz, a relatively cheap receiver with much greater image rejection on the higher bands. The ham band only Heathkit HR-10 used the same IF and filter.<\/p>\n

\"The<\/a>

The Heathkit HR-10 (Source: Heathkit Virtual Museum)<\/p><\/div>\n

Then a bit later, synthesizers arrived that made it much easier to build better receivers.<\/p>\n

There was a wave of building using the 7360 balanced mixer used in this receiver, and frontend q-multipliers to deal with the lack of front end selectivity. But as semiconductors and ICs came along, it became much easier for mixers to be balanced or double balanced.<\/p><\/blockquote>\n

Thanks for this insight, Michael–sounds like the\u00a0Squires Sanders SS-IBS\u00a0was quite the innovation of its time. Thank you for sharing!<\/p>\n","protected":false},"excerpt":{"rendered":"

Regarding the Squires Sanders SS-IBS Dan recently spotted on eBay, SWLing Post reader, Michael Black comments: [The\u00a0Squires Sanders SS-IBS is]\u00a0a legendary receiver that either brought new ideas to receivers, or brought them to the amateur radio level. There’s an article in QST in 1963 from Squires about this new stuff, I’ve never seen it so […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1271,3,26,43],"tags":[331,4487,4483],"class_list":["post-16040","post","type-post","status-publish","format-standard","hentry","category-boat-anchors-2","category-news","category-radios","category-shortwave-radio","tag-ebay","tag-michael-black","tag-squires-sanders-ss-ibs"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-4aI","jetpack-related-posts":[{"id":16025,"url":"https:\/\/swling.com\/blog\/2015\/12\/dan-spots-a-squires-sanders-ss-ibs-on-ebay\/","url_meta":{"origin":16040,"position":0},"title":"Dan spots a Squires Sanders SS-IBS on eBay","author":"Thomas","date":"December 7, 2015","format":false,"excerpt":"SWLing Post contributor, Dan Robinson, notes the following eBay link via the Extreme Shortwave Listening Facebook group: \"One of the rarest receivers, first one seen in years....famously pictured in the shack of the late Richard E. Wood from the 1970s... the Squires Sanders SS-IBS.\" Click here to view the Squires\u2026","rel":"","context":"In "Boat Anchors"","block_context":{"text":"Boat Anchors","link":"https:\/\/swling.com\/blog\/category\/boat-anchors-2\/"},"img":{"alt_text":"s-l1600","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/s-l1600-1024x576.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/s-l1600-1024x576.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/s-l1600-1024x576.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":33543,"url":"https:\/\/swling.com\/blog\/2018\/08\/dan-spots-a-rare-squires-sanders-ss-1r-receiver-on-ebay\/","url_meta":{"origin":16040,"position":1},"title":"Dan spots a rare Squires-Sanders SS-1R receiver on eBay","author":"Thomas","date":"August 13, 2018","format":false,"excerpt":"Many thanks to SWLing Post contributor, Dan Robinson, who writes: This is only the second Squires-Sanders rig that has appeared on the used market in decades, though it's the amateur receiver. The SS-IBS, the receiver pictured in a 1970s Communications Handbook in the shack of Richard Wood, the well-known SWL\u2026","rel":"","context":"In "Boat Anchors"","block_context":{"text":"Boat Anchors","link":"https:\/\/swling.com\/blog\/category\/boat-anchors-2\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Squire-Sanders-SS-1R-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Squire-Sanders-SS-1R-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Squire-Sanders-SS-1R-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Squire-Sanders-SS-1R-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":48105,"url":"https:\/\/swling.com\/blog\/2021\/03\/dan-discovers-a-squires-sanders-ss-1r-on-ebay\/","url_meta":{"origin":16040,"position":2},"title":"Dan discovers a Squires Sanders SS-1R on eBay","author":"Thomas","date":"March 8, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Dan Robinson who notes that there currently a Squires Sanders SS-1R on eBay. He notes: Ultra rare amateur receiver. The only thing rarer is a SS-IBS, the SW bands version. This is certainly a \"fixer upper\" in that it will need a re-stringing and\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/SS-1R.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/SS-1R.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/SS-1R.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/SS-1R.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/SS-1R.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":54178,"url":"https:\/\/swling.com\/blog\/2022\/09\/dan-spots-a-rare-squires-sanders-ss-1r-on-ebay\/","url_meta":{"origin":16040,"position":3},"title":"Dan spots a rare Squires Sanders SS-1R on eBay","author":"Thomas","date":"September 29, 2022","format":false,"excerpt":"Many thanks to SWLing Post contributor (and rare radio aficionado), Dan Robinson, who shares a link to this eBay listing. Dan notes: \"The SS-1R is almost as rare as the SS-IBS which was the SWBC version of the receiver.\" Click here to view on eBay. Thanks for sharing this, Dan.\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/09\/Squires-Sanders-SS-1R.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/09\/Squires-Sanders-SS-1R.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/09\/Squires-Sanders-SS-1R.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/09\/Squires-Sanders-SS-1R.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/09\/Squires-Sanders-SS-1R.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":22297,"url":"https:\/\/swling.com\/blog\/2016\/11\/what-made-the-squires-sanders-ss-1r-receiver-legendary\/","url_meta":{"origin":16040,"position":4},"title":"What made the Squires Sanders SS-1R receiver legendary?","author":"Thomas","date":"November 19, 2016","format":false,"excerpt":"Many thanks to SWLing Post contributor, Michael Black, who reminds us why the Squires Sanders SS-1R receiver (Dan recently spotted on eBay) was so innovative at the time: It's legendary because it leaped forward in receiver design, at least at the amateur level,\u00a0 and there was the article in QST\u00a0\u2026","rel":"","context":"In "Boat Anchors"","block_context":{"text":"Boat Anchors","link":"https:\/\/swling.com\/blog\/category\/boat-anchors-2\/"},"img":{"alt_text":"ss-1r","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/SS-1R-1024x564.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/SS-1R-1024x564.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/SS-1R-1024x564.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":22294,"url":"https:\/\/swling.com\/blog\/2016\/11\/ebay-find-rare-squires-sanders-ss-1r-receiver\/","url_meta":{"origin":16040,"position":5},"title":"eBay Find: Rare Squires Sanders SS-1R receiver","author":"Thomas","date":"November 18, 2016","format":false,"excerpt":"Many thanks to SWLing Post contributor, Dan Robinson, who shares this recent find on eBay and notes: Extremely rare Squires Sanders on Ebay....amateur receiver....only the second time in recent years one of these radios has come up on the used market... Click here to view on eBay. I was not\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"ss-1r","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/SS-1R-1024x564.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/SS-1R-1024x564.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/SS-1R-1024x564.jpg?resize=525%2C300 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/16040","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=16040"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/16040\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=16040"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=16040"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=16040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}