{"id":17436,"date":"2016-02-19T08:14:42","date_gmt":"2016-02-19T12:14:42","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=17436"},"modified":"2016-02-19T08:26:13","modified_gmt":"2016-02-19T12:26:13","slug":"1-8mhz-9th-order-high-pass-filter-kit","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2016\/02\/1-8mhz-9th-order-high-pass-filter-kit\/","title":{"rendered":"1.8MHz 9th Order High Pass Filter Kit"},"content":{"rendered":"

\"hpf9-1m8a-500x500\"<\/a>In reply to our post about a home brew high-pass filter<\/a>, SWLing Post<\/em> contributor Guy Atkins replied:<\/p>\n

I recently purchased one of these high pass kits and an enclosure from an Australian company, and look forward to assembling it:\u00a0 http:\/\/www.minikits.com.au\/electronic-kits\/filter-kits\/hf-highpass-filters\/HPF9-1M8<\/a><\/em><\/p>\n

The price was just $14.95 USD at the current exchange rate, but I did pay extra for the matching enclosure.<\/em><\/p>\n

It’s a 9th order Chebyshev filter at 1.8 MHz with less than 1 dB insertion loss from 1.8 to 100 MHz, and I expect it to work very well. Since it’s a kit with all parts and a PCB, it is half way between a “DIY from scratch” and a completely built commercial high pass filter.<\/em><\/p>\n

Very cool, Guy! Looks like it’ll be a fun kit to build. Please let us know what you think of the filter once you have it assembled. $14.95 is a very fair price.<\/p>\n","protected":false},"excerpt":{"rendered":"

In reply to our post about a home brew high-pass filter, SWLing Post contributor Guy Atkins replied: I recently purchased one of these high pass kits and an enclosure from an Australian company, and look forward to assembling it:\u00a0 http:\/\/www.minikits.com.au\/electronic-kits\/filter-kits\/hf-highpass-filters\/HPF9-1M8 The price was just $14.95 USD at the current exchange rate, but I did pay […]<\/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":[545,344,3],"tags":[3446,4775,4751],"class_list":["post-17436","post","type-post","status-publish","format-standard","hentry","category-ham-radio","category-kits","category-news","tag-guy-atkins","tag-high-pass-filter-kit","tag-high-pass-filter"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-4xe","jetpack-related-posts":[{"id":17502,"url":"https:\/\/swling.com\/blog\/2016\/02\/mikes-low-and-high-pass-filter-deals\/","url_meta":{"origin":17436,"position":0},"title":"Mike’s low and high pass filter deals","author":"Thomas","date":"February 27, 2016","format":false,"excerpt":"SWLing Post contributor, Mike Ladd, is an avid SDR enthusiast and an\u00a0administrator of the SDRplay Facebook group.\u00a0Mike\u00a0contacted me about special pricing he has arranged for low and high pass filters through Rescue Electronics. Mike explains: These filters retail for $70.00 each. I spoke to the builder. I told him who\u2026","rel":"","context":"In "Accessories"","block_context":{"text":"Accessories","link":"https:\/\/swling.com\/blog\/category\/accessories\/"},"img":{"alt_text":"HDSDR-SDRPlay-RSP-PARI","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/10\/HDSDR-SDRPlay-RSP-PARI-1024x554.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/10\/HDSDR-SDRPlay-RSP-PARI-1024x554.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/10\/HDSDR-SDRPlay-RSP-PARI-1024x554.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":45336,"url":"https:\/\/swling.com\/blog\/2020\/09\/ron-reminds-us-that-mfj-still-offers-a-shortwave-radio-kit\/","url_meta":{"origin":17436,"position":1},"title":"Ron reminds us that MFJ still offers a shortwave radio kit","author":"Thomas","date":"September 14, 2020","format":false,"excerpt":"Following up on our recent MFJ post, SWLing Post contributor, Ron, writes: Another thing about MFJ is they still offer the MFJ-8100 as a kit or built. This is the only regenerative receiver available as far as I know. Mr. Jue and his guys did a couple of tweaks like\u2026","rel":"","context":"In "Kits"","block_context":{"text":"Kits","link":"https:\/\/swling.com\/blog\/category\/kits\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/09\/MFJ-8100K_1024x1024%402x-Kit-Regen.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/09\/MFJ-8100K_1024x1024%402x-Kit-Regen.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/09\/MFJ-8100K_1024x1024%402x-Kit-Regen.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/09\/MFJ-8100K_1024x1024%402x-Kit-Regen.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/09\/MFJ-8100K_1024x1024%402x-Kit-Regen.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":43815,"url":"https:\/\/swling.com\/blog\/2020\/06\/frank-recommends-the-db4020-qrp-transceiver-kit-by-ea3gcy\/","url_meta":{"origin":17436,"position":2},"title":"Frank recommends the DB4020 QRP transceiver kit by EA3GCY","author":"Thomas","date":"June 11, 2020","format":false,"excerpt":"Many thanks to SWLing Post contributor, Frank (ON6UU), who writes: As so many, I enjoy reading your posts on the SWLing Post, very clear and understandable written with eye for details. I just did a \u201cread-again\u201d of the QCX+ article and thought that maybe you also would be interested in\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\/2020\/06\/QRP-Kit-Javier-2-e1591874171990.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/QRP-Kit-Javier-2-e1591874171990.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/QRP-Kit-Javier-2-e1591874171990.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/QRP-Kit-Javier-2-e1591874171990.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":16620,"url":"https:\/\/swling.com\/blog\/2016\/01\/ramsey-electronics-discontinues-hobby-kit-group\/","url_meta":{"origin":17436,"position":3},"title":"Ramsey Electronics discontinues Hobby Kit Group","author":"Thomas","date":"January 6, 2016","format":false,"excerpt":"Ramsey Electronics recently announced the following on their website: For more than 4 decades, the name Ramsey Kits has been synonymous with some of the neatest and the greatest electronic products and hobby kits for the do-it-yourself hobbyist. In those 40+ years, we always thought \u201coutside the box\u201d when we\u2026","rel":"","context":"In "Kits"","block_context":{"text":"Kits","link":"https:\/\/swling.com\/blog\/category\/kits\/"},"img":{"alt_text":"Ramsey-Kit","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/01\/Ramsey-Kit-e1452089523504.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":15811,"url":"https:\/\/swling.com\/blog\/2015\/11\/diy-kit-for-aircraft-band-monitoring\/","url_meta":{"origin":17436,"position":4},"title":"DIY Kit for Aircraft Band Monitoring","author":"Robert Gulley","date":"November 24, 2015","format":false,"excerpt":"There is an interesting kit being sold on eBay designed specifically for aircraft monitoring of 118-136 MHz (meaning it could also cover a number of ACARS frequencies). The receiver is being sold as a DIY kit, a completed kit, or an assembled kit and enclosure. Prices range from ~$16 to\u2026","rel":"","context":"In "Kits"","block_context":{"text":"Kits","link":"https:\/\/swling.com\/blog\/category\/kits\/"},"img":{"alt_text":"Aircraft-Band-Radio","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/11\/Aircraft-Band-Radio.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/11\/Aircraft-Band-Radio.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/11\/Aircraft-Band-Radio.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":45948,"url":"https:\/\/swling.com\/blog\/2020\/10\/steve-builds-a-dc30b-qrp-transceiver\/","url_meta":{"origin":17436,"position":5},"title":"Steve builds a DC30B QRP Transceiver","author":"Thomas","date":"October 13, 2020","format":false,"excerpt":"Many thanks to SWLing Post contributor, Steve (KZ4TN), who shared the following guest post originally on QRPer.com, but I've posted it here as well because I'm sure it'll resonate with those of us who love building kits!: DC30B QRP Transceiver Project by Steve Allen, KZ4TN I wanted to build a\u2026","rel":"","context":"In "Guest Posts"","block_context":{"text":"Guest Posts","link":"https:\/\/swling.com\/blog\/category\/guest-posts\/"},"img":{"alt_text":"DC30B QRP Transceiver Project","src":"https:\/\/i0.wp.com\/qrper.com\/wp-content\/uploads\/2020\/10\/DC30b-e1602591022362.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/qrper.com\/wp-content\/uploads\/2020\/10\/DC30b-e1602591022362.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/qrper.com\/wp-content\/uploads\/2020\/10\/DC30b-e1602591022362.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/qrper.com\/wp-content\/uploads\/2020\/10\/DC30b-e1602591022362.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/17436","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=17436"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/17436\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=17436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=17436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=17436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}