Видео

I'm glad you watched the video. The variable capacitor used in the R-300's main dial has a capacitance that is too large, making it extremely difficult to tune to fine frequencies. This is a common technique with older analog receivers, but it takes less time to tune by first using the main dial to get a rough idea of ​​the frequency and then using the spread dial to tune to the finer frequency. The frequency accuracy of the main dial is very important, so if the main dial is adjusted sufficiently, there will be less error in the spread dial. This is an important step in getting the most out of the R-300's performance, so precise adjustment is required even if it takes time.

@@May_happiness_come_to_you_777 oh thank you but I think there must be something off with my R300 since I can tune in multiple stations that ly a little farther away by moving band spread

Thank you for your reply. I read your comments with great interest. If the received signal is from a medium wave station this may be due to the antenna gain being too high, but if you are receiving distant frequencies within the same shortwave signal then it may be that the coil is tuned to the wrong signal position (False Signals) rather than the actual signal position. Alternatively, a problem with the switch contacts or poor soldering could be suspected, so I think it will be fun to investigate the various causes.

@@May_happiness_come_to_you_777 it is a fact that if I don't tune in the band spread I don't even receive any signal so I have to do both contemporary. And at A certain point I receive multiple near-by stations by only turning on band spread. Weird

I am very glad that you watched the video. The antenna I'm using is a simple wire antenna that's about 8 meters (26.2 feet) long. High performance antennas are very good, but simple antennas are the best way to test the performance of a receiver, and the difficulty of using them because of their simplicity is what makes them fun. Thank you for your very kind comment!　73.

I'm glad you watched the video. The Sony ICF-SW23 was sold in 2009 as the final version of the ICF-SW20, and was a fully analog portable radio with a double superheterodyne circuit configuration. It's extremely portable, but the shortwave reception performance of the radio on its own was a bit lacking. However, when using the included reel-type auxiliary antenna, I was able to hear overseas broadcasts at night very well. It had a very simple structure with only a sound quality switch and volume adjustment on the left side and no other functions, but it made a great contribution to reducing the weight of luggage when trekking. I remember that even with such a small radio, I was able to hear a lot of broadcasts while on the mountain. It looks similar to the CR-200 you mentioned in your comment, but the contents are completely different.

@@May_happiness_come_to_you_777 amazing to know!! Thanks for the info i have recently found my intrest in radios and boomboxes! I can too hear some broadcasts from other countries as i live in finnland am radio here is been closed since 2000s so it has to be from other countries i have heard also russian anyway thanks for the info have a nice day

I'm glad you watched the video. I was able to hear 7MHz LSB communications, but I was unable to hear any aviation/marine radio or high-band USB communications at the time I filmed. Solar activity is currently at its peak, which should allow radio signals to be picked up from greater distances, but results will vary depending on the time of day, antenna and receiving location. Perhaps the antenna was chosen incorrectly.

Я рад, что вы посмотрели видео. Используемая антенна представляет собой проволочную антенну длиной около 8 м. Это старое радио, которое осталось в доме моих родителей, и оно до сих пор хорошо работает и прекрасно звучит.

Я рад, что вы посмотрели видео. QTH - Токио, Япония. Я использую антенну AOR SA7000. Если вы находитесь на открытом воздухе, вы можете получить достаточную чувствительность, используя только встроенную выдвижную антенну, но из-за индивидуальных различий в самой радиостанции не все 2001D (2010) имеют такие же характеристики, как показано в этом видео. Однако если радиостанция и антенна хорошо подобраны, вы должны получить отличные результаты.

@@May_happiness_come_to_you_777 Спасибо за ответ

Ой ладно вам! У меня такой приемник. Много чего на его ловлю и вытягиваю дальние радиостанции

Copying the look of old Kenwood hf sets.

I am glad you watched my video. This radio appears to have excessive gain when a high performance antenna is connected. A few feet of wire antenna seems to work better.

I'm glad you watched the video. When I bought this, I tried various things to see if I could improve the sound quality of my relatively inexpensive portable shortwave radio. While the end result wasn't a huge success, I was at least able to make the audio on a weak signal stand out, so I think it was satisfactory. It especially contributed to easier listening on SSB/CW.

I'm glad you watched the video. The IC-R8500's RF gain control has only three selections, -10/-20/-30db, with only -20db available for frequencies below 500kHz. There was a time when this was a topic of discussion in Japan, but I believe it was due to the manufacturer's design philosophy. The functions and operation feel are similar to those of a stationary receiver, but when using the actual device it feels like a handheld device with enhanced scanning functions. Here in Japan where I live, it is popular among those who enjoy aviation radio and as an introductory model for SWL, and even though it has been discontinued, it still fetches high prices on the second-hand market.

@@May_happiness_come_to_you_777 Yes, they definitely command high prices on the used market. Interestingly I've read many complaints about the three position RF gain selector/control of the Bearcat DX-1000, which is much older. Yet no one complains about the lack of a RF gain potentiometer on the front of the IC-R8500. The AOR 5000/5000A/5001D all seem to only have AF gain and squelch controls on the front. Yet no one complains about there being no RF gain control, BFO, and other "knob" toys one would find on something like a Hammarlund HQ-180A. Maybe the desire for such "control knobs" as died away over the years?

動画をご覧頂きましてありがとうございます。 思えば鉱石ラジオに始まりボートアンカーも様々な一物達に触れてきました。 そのどれもが皆素晴らしい設計思想を持ち、実機の構成もラジオ少年が見たら心躍るものばかりで興味が尽きません。 このR390A/URRもそんな心くすぐる一台です。 本機は現場でかなり酷使された様子で、内部の汚れ具合や破損修理状況、金属のすり減り具合等を診るに過酷な環境にあった個体である事を想像できます。 全てのパートを動画でご紹介するには膨大な時間と手間暇を必要とする為、この動画もかなりの部分を削除編集してのアップロードとなりました。 私ももうかなりの高齢ですので、修理のご依頼等は承っておりませんが動画でその手助けが出来るようを願っております。

早速の返信ありがとうございます。 私も中学生の頃にBCLに嵌り、還暦過ぎた頃から当時手の届かなかったスカイセンサーやクーガー等の受信機を収集し始めました。 現在は真空管のハリクラやハマーランドも愛用しています。 但し電子工作の技術がない聴くだけの人間ですが… 貴殿のお返事承知しました。 ありがとうございました。 今後もブログ楽しみにしております。 次第に