tracert-swl.blogspot.com
聽見遠方...: Grundig G6 Buzz Aldrin edition 橡膠漆黏手問題
http://tracert-swl.blogspot.com/2015/12/grundig-g6-buzz-aldrin-edition.html
聽見遠方, 聽見天空, 聽見聲音. 這裡紀錄我的巡天故事, 也以此 Blog 向各位前輩致意. Grundig G6 Buzz Aldrin edition 橡膠漆黏手問題. 早在選擇購買 Grundig G6 Buzz Aldrin edition 的時候, 就已經知道會有橡膠漆黏手的問題, 所以使用時都算是小心翼翼的, 希望晚點再來面對這個問題. 不過該來的時候還是會來, 最近已經黏的有點受不了, 上面也是一堆毛削. 於是決定開始實驗看看怎樣解決這個問題, 為了不破壞功能, 先用後殼來做實驗, 雖然先前已經有試過香蕉水, ( 請參考這篇 : Grundig G6 與 G3 橡膠漆老化演習. 但是發現 G6 的塑膠材料會被香蕉水融化, 於是改用松香水, 去漬油等溶劑, 也都無法處理得很好. 還把整個G6 的後殼弄得斑駁不堪, 不得已最後只好用砂紙磨過, 重新噴漆. 最後發現使用異丙醇加上紗布可以擦掉, 其中紗布是個重點, 我試過很多種, 衛生紙, 化妝棉, 不要的衣服等等都沒有紗布的好, 主因是磨擦力夠, 且吸汙性好. 左上方的後殼已經被香蕉水咬傷, 只好打磨後噴漆, 前面板則幸運的逃過一劫.
tracert-swl.blogspot.com
聽見遠方...: Sangean ATS-606A FM 與 SW 共用天線
http://tracert-swl.blogspot.com/2017/01/sangean-ats-606a-fm-sw.html
聽見遠方, 聽見天空, 聽見聲音. 這裡紀錄我的巡天故事, 也以此 Blog 向各位前輩致意. Sangean ATS-606A FM 與 SW 共用天線. 繼上次把 ATS-606A 安裝在車庫後, 又遇到了新的困擾, 原本測試的時候, 我是使用 Grundig G6 , 他的線路上FM 信號是可以從 AM/SW 外接天線進入, 也就是說, 從外接天線孔就可以收 FM. 而 ATS-606A 則不行, 造成 ATS-606A 在車庫裡面是收不到FM 的. 於是我做了幾個試驗, 試圖可以讓 FM 也可以共用, 最後試出這個方法, 可以把信號傳送到 FM 天線, 又不影響原本 SW 的天線輸入. 原理很單純, 用一根導線在 FM 天線上繞上幾圈, 然後在 AM/SW 外接天線上也繞上幾圈, 這樣就可以把信號轉送到 FM 上 , 就好像是個變壓器一樣. 主意打定, 開始找材料, 發現用過的洗髮精罐子裡面的塑膠管可以穿過 FM 天線. 在上面繞上 AWG22 的多芯線, 約 9 10圈, 然後用熱溶膠固定好. 套上熱縮膠套後, 就完成了, 構造非常簡單. 訂閱: 張貼留言 (Atom).
tracert-swl.blogspot.com
聽見遠方...: 新增車庫的收聽區
http://tracert-swl.blogspot.com/2017/01/blog-post.html
聽見遠方, 聽見天空, 聽見聲音. 這裡紀錄我的巡天故事, 也以此 Blog 向各位前輩致意. 最近一陣子都在車庫裡面運動, 剛開始是用 Grundig G6 收聽, 後來主意打定, 決定在車庫裏面新增一個收聽區. 原本在車庫我就有架設一個短波天線, 請參閱 低樓層的短波天線. 在天線入口的地方, 我把置物架的東西清開, 整理出了一個空間來放置收音機. 由於 Grundig G6 是我平常帶來帶去的隨身收音機, 加上他的聲音比較差, 接收感度也比較弱, 所以把另一台庫存的山進 ATS-606A 的開箱啟用, 讓 Grundig G6 能夠脫身, 繼續陪我四處跑. 電源的部份我利用汽車淘汰下來的電瓶, 來供應 ATS-606A 使用, 為此我自己用手上多餘的料件做了一個 12V 轉 5V 的轉換器. 這裡要注意 ATS-606A 的電源極性是外正內負, 接錯就糟糕了. 為了確保安全, 夾電瓶的夾子上加上自復式保險絲, 然後加上熱縮膠套絕緣. 右方的黑色線連接到充電器, 每隔一段時間可以幫電池充電, 上方的白色線連接電池, 電池藏在架子下方, 左邊的線輸出5V 到 ATS-606A .
strangeapparatus.com
How to Build a Crystal Set
http://www.strangeapparatus.com/Crystal_Set.html
A sketch showing the layout of the crystal set. Schematic of the crystal set. The crystal set incorporates an aerial tuning circuit that is quite separate from the main tuning. Altering the aerial switch selects an appropriate tap on L1 to bring the aerial circuit in to tune. The 435pF aerial capacitor C1 will enable the circuit to tune a long aerial. In some cases, it may necessary to reduce the value of this capacitor to enable a very long aerial to be brought into tune. Rear view of the crystal set.
va3nfa.blogspot.com
VA3NFA Blog: October 2006
http://va3nfa.blogspot.com/2006_10_01_archive.html
Tuesday, October 24, 2006. Well, this looks promising! I spent about 2 hours today over at Doug's ( VE3XK. House and we took a good look at this transmitter. We believe that the previous owner had a 12V battery installed inside the case (held in place by the copper clamp) that was wired to provide power in case the external power was down. We removed this clamp and leads to tidy up the case a bit. To try to impress me (and it worked ;-) Doug fired up his 1940's vintage Oscilloscope (pics below) and we to...
k4eq.net
K4EQ Ham Radio Website: Radio Links
http://www.k4eq.net/p/ham-radio-links.html
With any dead links or other incorrect information. Thanks! Also, you can save yourself a lot of time searching for Ham Radio information by going to AC6V's Amateur Radio and DX Reference Guide. Australian QRP Home Page. Four State QRP Group. New England QRP Club. New Jersey QRP Club. North American QRP CW Club. West Florida QRP Club. American Science and Surplus. R and L Electronics. Other Great QRP Sites. K3WWP's Ham Radio Activities. QRP / SWR Home Builder. K4MSW - Totally QRP.
pavekmuseum.org
Radio Parts and Supplies
http://www.pavekmuseum.org/parts.html
3517 RALEIGH AVENUE, ST. LOUIS PARK, MN 55416. Wednesday – Saturday 10am - 5pm. Closed Sunday - Tuesday and holidays. Broadcasting Hall of Fame. Radio Parts and Supplies. Dick Atlas provides OEM parts and components to professionals and hobbyists alike. 6020 Highway 55, Golden Valley, MN 55422 763/543-2585, 800/328-0270. This vendor, out of Tempe, Arizona, has a great supply of tubes and components. One thing they no longer publish is their vacuum tube price list. They do sell parts . For just about anyt...
homebrewcpu.com
My Other Projects
http://www.homebrewcpu.com/projects.htm
My Other Projects ]. Some of my other projects. Might as well put them here. I'd read about these things long ago, and the part I remember most was what happened after the device cohered. To reset it, you'd have to physically jostle the coherer. This led to a lot of really interesting inventions to automatically kick the coherer after it activated. I recently ran across an excellent web page which described how easy it is to make your own coherer: http:/ home.earthlink.net/ lenyr/coherer.htm. I doubt I'l...
ck722museum.com
ck722_regen
http://ck722museum.com/regen.htm
THE STORY OF THE CK722. Mike Peebles Re-Invents a 45 Year Old CK722 Classic Radio. Here is a front view of Mike’s CK722 Regen Receiver. The text is a closeup of the label. See the next page for a detailed layout. Mike Peebles recently came across a copy of the original CK722 Transistor Applications book and when he saw Mr. Bohr’s Regen Receiver on page 9, he decided to build one. And with The Xtal Set Society ( http:/ www.midnightscience.com. Just look at the photos on this page and the next! I wonder ho...
earlywireless.com
Here are some links to other web sites
http://www.earlywireless.com/links.htm
Here are some links to other web sites. I hope you find them useful. Please let me know if any of these links are 'dead' so that I can delete them. If you know of a link that you think should be here, please contact me. Http:/ www.clearwaycomputing.co.uk/. Do you need help learning how to use a computer? David specialises in training adults and seniors. To help you get started. You will be impressed with David's knowledge, understanding and empathy. Http:/ pcproficiency.co.uk/. Dedicated to the preservat...