R80エアバンドレシーバーキット
R80V6.の制御はPIC18F1320マイコンですが、ソースはオープンではありません。 そのR80V6の出来ですが、感度抜群でハンディスキャナに迫る耳の良さす。しかしながら、周波数表示と操作性に難あり、更にスケルチいまいち。 Block diagram そこで、RF部を生かし…
(This material is translated version.) Next up is the R80 kit. This kit seems to be developed and manufactured by the same manufacturer as the first model. R80 front view Mr.kon has reported of kit assembly on his blog. I asked Mr.kon some…
続いて紹介するのはR80キットです。このキットは一号機と同じメーカーが開発製造しているものと思われます。 R80フロント konさんがブログでキット組み立てについてレポートされています。konさんに疑問点をお尋ねし、キットを買って組み立てました。ご協力…
Please refer YOUTUBE video. I could correspond to recover squelch function on R80 V6.0 airband radio. youtu.be As you know there is many issues of squelch function on R80 radio. All user would not use the squelch function to avoid mulfunct…
There are a number of cases on Chinese EC. I found the case just matched the R80 kit.It costs about USD10 with shipping on Aliexpress.Please take care of selecting the item because there are several lengths of the cases and L=110mm is popu…
Silicon Chip（au)と言うマガジンにR80の記事が載っています。R80＿V6とR80＿V7の説明書（英語）がアップロードされています。V6マニュアルの方にSi5351aのPLL回路部が載っています。V7マニュアルの方には回路図も載っており、V6/V7の差がわかります。 I fou…
R80 118-136MHz Air Band Receiver Aviation Radio Receiver PLL Double Frequency Conversion Assembled - Free Shipping - ThanksBuyer 5351aを局発に使い、安定待ち受け受信できる新しいキットR80(Ver6)の日本語版説明書を作製してみました。http://chito…
ユーチューブを流し見していたら、R80の基板リビジョンPCB HM00ABRC_7でFMも聞けるようになったとの紹介がありました。Prem Menonさんが購入され、組立て、回路図も入手され、帯域特性の測定もされています。 Mr.Prem Meno is introducing the newly R80 ver…
Finally, I had finished assembling the kit. There is remaining much noise in spite of receiving the signal. So I had been worried that there were some issues. The squelch is unstable and the squelch will close when the strong signal is com…
After assembled, I had adjusted and could receive the signal. However, it is very much noisy. I'm afraid of remaining some issues. BTW I checked the passband characteristics for the front filter and LNA by using nano VNA. As LNA is 20dB ga…
I completed assembling the kit. Some noisy sound comes out from the speaker. I resumed the voltage list of each IC node. The voltage is measured by a digital tester at DC mode.This is for simple checking to avoid mistaken wiring or parts s…
I just received the kit from China and would like to start assembling it. However, there was no document with it. So I shall prepare the list by myself. Prior to soldering, I put the parts in order to check the contents being enough.I adhe…
After FM62429 variable attenuator the audio signal is going to LM386 amp.The same signal is going to the MC3661 filter amp and detector. MC3361 is naturally the FM receiver IC and this receiver is using filter amp for detected signal AMP t…
c. 1st IF AMP, 2nd mixer, 2nd IF AMP, and detecter MC3661 is working as the 1st IF AMP and also the 2nd mixer combined with 10.245MHz crystal oscillator. The output of MC3661 is fed into LT455 ceramic filter prior to TA7640.TA7640 is worki…
The 1st local oscillator is MS5351 PLL managed by PIC18F1320. There is a rotary encoder to tune the frequency. We can select 100kHz or 10kHz step frequency by pushing the RE knob. The frequency is displayed on the front 7 segments 4 column…
The circuit of R80 front end section a. The front end filter and LNA The front stage filter is a stager style with two LC resonating circuits.L is D5x5 size, 4.5 turn（Estimated inductance is 68nH by WEB service "http://gate.ruru.ne.jp/rfd…
The block diagram of R80 receiver I'm wondering to buy R80 kit or not. I have been interested in various functions on R80. 1. They are saying that the LO is PLL. And I had come to know that the chip was MS5351 as was Si5351a clone.If so, t…
少し前のブログ（と言ってももう一年近く前）でPLL方式局発のエアバンド受信機キットがあることを紹介しました。 nobcha23.hatenadiary.com 買って試そうかなと迷ってましたが、最近konさんと言う方のWEBで詳しく紹介されているのがわかりました。キット入手…
最近AliExpressから部品を買ったためか、「お好きなもの紹介メール」でPLL方式局発で構成されるエアバンドレシーバーキットの紹介を受けました。ネットサーフィンすると、套件之家（Sweat house）と言うところが開発したものらしく、品種があり、7セグメント…
