I'm not sure this has been posted before but there's lot's of cool information and photos, and the bonus is, if you can read Japanese, there's a wealth of information on here. http://www.geocities.jp/yumesawanachi/radio/radio.sakuin.html#rt2880 Edit 5/17/19, the link no longer works, here's the Wayback Machine Link https://web.archive.org/web/2016051...ties.jp/yumesawanachi/radio/radio.sakuin.html
"It is a radio cassette that that Damian used to love (lie). 4.2cm It is basically the same size, weight and performance as the older brother RK-888, but because the chrome tape can not be used, the frequency characteristic is 50 to 10000 Hz, which is basically the same as the 4.2 cm tweeter and 2 speaker of 16 cm woofer, etc. It was a line. The price of 39,800 yen was the most common one at that time's monorail / radio cassette and it could be said that it was a price range that is handier to reach, although it is higher in sound quality and more multifunction than an entry primitive. MW、FM。 MW, FM. 幅366×高さ240×奥行き110（単位・mm）。 Width 366 × height 240 × depth 110 (unit · mm). 重さ4.6kg。 Weight 4.6 kg. 定価39,800円。 Fixed price 39,800 yen." Sorry, I mistakenly deleted the link!!!!
Google must have updated their algorithm, some cool sites are popping up. This one is a little older and there's not a lot of cassette players but still some drool worthy equipment. Don't forget to use Google Translate to get a decent translation, it won't let me do a direct link anymore. https://translate.google.com/ http://www.ne.jp/asahi/uchio/tokyo/radiokobo2/ (check out the BCL Radio Museum 5 link)
A lot of boxes on this site and a million links http://plaza.harmonix.ne.jp/~ita/ "The design of an old radio cassette that gives blessing to the owner with warmth of human skin than the present radio cassette that was overrun by the kitchen formulation using a computer is far better than before."
Cool blog with tons of photos including this exhibition in 2016 http://kyourannonahanikki.blogspot.com.br/search/label/ラジカセ
Sony's 70th Anniversary Exhibition, lot's of photos, and a cool site. https://translate.googleusercontent...78672/&usg=ALkJrhhFQl3gbZYV3NUhKl1_vAdIPiyJAA
A bunch of Sharp Japanese Brochures. https://translate.google.com/translate?sl=auto&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http://www.video-koubou-topaz.jp/SHARP-RADIO-BOOMBOX-1981.html&edit-text= The home page, I feel like this has been posted before but it's the mother-lode of information! https://translate.google.com/transl...oubou-topaz.jp/radio-boombox-mini-museum.html
These little short-wave radios are so cool, I've got some Sony's including the first one ICF-5500 "Age when the night was still deep ... radio boys sharpened their ears and traveled the world." https://translate.google.com/translate?sl=auto&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http://www003.upp.so-net.ne.jp/tokita/skysensor/index.html&edit-text=
Thanks!, there's a ton more Hugo... This one has a bunch of scanned brochures.... http://my.reset.jp/inu/ProductsDataBase/Products/
A nice little blog. "Well, long-established Sony, Matsushita will continue to lead the industry in this field as usual ... Actually, I was breathless with the wave of "giantization" old-fashioned home appliances. Sharp, Sanyo etc. Manufacturers who were forced to struggle until now have a boom." https://translate.google.com/transl...rr.blog.fc2.com/blog-entry-18.html&edit-text=
I'm finding random information but it says there's a ton of it, I'm not sure if the site is dead or just getting updated. I can't access some of it beside the front page of catalogs which look pretty cool. Maybe the wayback machine would help. http://audioidiots.com/index.php
Advertising blog with some Walkman Ads. https://translate.google.com/transl...gs.yahoo.co.jp/kaifurudo_2/folder/490078.html
Some cool boxes on this blog, and this book might be interesting! https://translate.google.com/transl...adiocassette/article/20170923.html&edit-text=
Russian Boombox Blog https://translate.google.com/transl...ot.com/2012/04/jvc-pc-w330ls.html&prev=search
Headphones! The Headphone Modern Museum. https://translate.google.com/transl...ttp://20cheaddatebase.web.fc2.com/&edit-text=
This guy is really into repairing old units, mostly shortwave and radio, even tubes, but there's a few walkmans and cassette players on here. https://translate.google.com/translate?hl=en&sl=ja&tl=en&u=http://radiokobo.sakura.ne.jp
