jh4vaj

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@fjdkfdfjdf33 12 күн бұрын

What's the verdict?

@jh4vaj 12 күн бұрын

Please check my blog www-jh4vaj-com.translate.goog/archives/43101?_x_tr_sl=ja&_x_tr_tl=en&_x_tr_hl=ja&_x_tr_pto=wapp

@edvanlima-vw4qq Ай бұрын

Olá, sou do Brazil! qual a finalidade deste aparelho tuner??

@kostasspiliopoulos3352 Ай бұрын

Νice tone and audio.....also stable oscillator 73

@jh4vaj Ай бұрын

The circuit configuration is as follows Twin-T OSC --> LPF --> AMP

@kostasspiliopoulos3352 Ай бұрын

@@jh4vaj tks for your reply....excellent schematic 73

@RobertoPietrafesa Ай бұрын

Thank you for the time you took to make this video.

@user-mw2pq2bt3u 2 ай бұрын

А на передачу???

@jh4vaj 2 ай бұрын

www.hamskey.com/2024/02/introduction-to-uv-k5-hf-fullband.html www.hamskey.com/2024/03/introduction-to-uv-k5-hf-fullband.html

@jacuswoczega9180 2 ай бұрын

So is not magnetic (like Alliexpres description claims), but spring-based

@xpo856 2 ай бұрын

流石　Aliexpress です。　もう　expressで　改造キットが1000円前後でAli。　恐れ入りました。ただ、細かいバンダ付けに難があり、私は手をだしません。

@MI7DJT 2 ай бұрын

I'll take this over the latest Kenwood any day of the week.

@hubiiip7811 2 ай бұрын

You need to solder the mod-kit for the HF to work.

@mustafayetiskin4513 3 ай бұрын

👍👍👍

@tonikl4ji871 3 ай бұрын

Download firmware please? Where?

@jh4vaj 3 ай бұрын

Here it is. www.hamskey.com/2024/02/introduction-to-uv-k5-hf-fullband.html www.hamskey.com/2024/03/introduction-to-uv-k5-hf-fullband.html

@tonikl4ji871 3 ай бұрын

@@jh4vaj thank you!

@mikeatthebeach 3 ай бұрын

The existing only firmware mods will not give you the same sensitivity since the RF to IF Noise Floor is 3dB higher in the existing HF and SW bands due to no image rejection and higher thermal noise hitting the mixer of the stock UV-K5 at HF and SW frequencies! Only way to get that sensitivity back is with external filters to block the image frequencies ( FM BC and Aircraft frequency band ) folding/falling into the receiver at HF and SW bands The mixer at HF in an stock UV-K5 gets hit with a 3dB higher noise floor masking the sensitivity of the receiver The new Si4732-A10 has built-in image rejection and lower LO phase noise so a only firmware mod will not fixed image noise degradation at HF and SW Rx reception The Si4732-A10 CEC module is far superior to any firmware only mod for HF and SW Sensitivity and better receiver image and spur rejection I know, not all of you are RF Design Radio Engineers, to understand the technical aspects of this, but trust me, the Si4732-A10 module is a real breakthrough for the modified UV-K5 radio’s

@mikeatthebeach 3 ай бұрын

既存の唯一のファームウェア MOD では、同じ感度は得られません。これは、イメージ除去がないことと、HF および SW 帯域で純正 UV-K5 のミキサーに当たる熱ノイズが高いため、RF から IF までのノイズフロアが既存の HF および SW 帯域で 3dB 高いためです。 SW周波数！その感度を取り戻す唯一の方法は、外部フィルターを使用して、HF および SW 帯域で受信機に折り畳まれるイメージ周波数 (FM BC および航空機の周波数帯域) をブロックすることです。純正 UV-K5 の HF のミキサーは 3dB 高いノイズフロアに見舞われ、受信機の感度がマスクされます。新しい Si4732-A10 にはイメージ除去機能と低い LO 位相ノイズが組み込まれているため、ファームウェア Mod のみでは HF および SW Rx 受信時のイメージノイズ劣化が修正されません。 Si4732-A10 CEC モジュールは、HF および SW 感度、受信機イメージおよびスプリアス除去において、ファームウェアのみのモジュールよりもはるかに優れています。皆さん全員がこの技術的側面を理解できる RF 設計無線エンジニアではないことは承知していますが、信じてください、Si4732-A10 モジュールは改良型 UV-K5 無線機にとって真のブレークスルーです。

@mikeatthebeach 3 ай бұрын

FYI The existing only firmware mods will not give you the same sensitivity since the RF to IF Noise Floor is 3dB higher in the existing HF and SW bands due to no image rejection and higher thermal noise hitting the mixer of the stock UV-K5 at HF and SW frequencies! Only way to get that sensitivity back is with external filters to block the image frequencies ( FM BC and Aircraft frequency band ) folding/falling into the receiver at HF and SW bands The mixer at HF in an stock UV-K5 gets hit with a 3dB higher noise floor masking the sensitivity of the receiver The new Si4732-A10 has built-in image rejection and lower LO phase noise so a only firmware mod will not fixed image noise degradation at HF and SW Rx reception The Si4732-A10 CEC module is far superior to any firmware only mod for HF and SW Sensitivity and better receiver image and spur rejection I know, not all of you are RF Design Radio Engineers, to understand the technical aspects of this, but trust me, the Si4732-A10 module is a real breakthrough for the modified UV-K5 radio’s

@jh4vaj 3 ай бұрын

I don't have a direct perception of sensitivity suppression, but I've noticed severe intermodulation interference. So, I've prepared a low-pass filter (LPF). Here's the video: kzfaq.info/get/bejne/np-Km5eoqeC5f4k.html

@piah1976 3 ай бұрын

👏👏👏

@user-ge4wt2gl1l 3 ай бұрын

Хлопки АРУ при переклюяении синтезатора убивают всякое желание крутить настройку. В ATS последних версий вроде исправили это, или нет. У меня приёмникATS-20 первой версии и перестраиваться на нём то ещё удовольствие и шипит он как фм приёмник в отсутствии сигнала

@jh4vaj 3 ай бұрын

The completion level is likely higher in ATS.

@IU3POA-lp9oi 3 ай бұрын

they're so cute... 😀😀😀

@TsucaPon40 3 ай бұрын

左から2番目にあるソニーのテレビ、懐かしいな。地デジになるまで父親の寝室用のテレビとして使っていました。

@IM1deadMONEY 3 ай бұрын

Awesome! Video soon on how to get this shortwave coverage?

@jh4vaj 3 ай бұрын

I am using firmware created by KD8CEC. Hardware modifications are also required. Please refer to these URLs for details. www.hamskey.com/2024/02/introduction-to-uv-k5-hf-fullband.html www.jh4vaj.com/archives/42905

@user-ge4wt2gl1l 3 ай бұрын

no ssb

@jh4vaj 3 ай бұрын

here you are kzfaq.info/get/bejne/d7eZl8iptLTWnpc.html

@sandyjohnston9457 3 ай бұрын

Thank you for all the help in setting my Antuner AT-100M Pro. it was very helpful to set it up before putting it into use. cheers 73 from New Zealand ZL3AXL

@walterblizzard 3 ай бұрын

What firmware is this? or what modifications did you do? It's pretty cool stuff.

@jh4vaj 3 ай бұрын

I use the firmware by KD8CEC. Hardware modifications must also be made. Please refer to these URLs for details. www.hamskey.com/2024/02/introduction-to-uv-k5-hf-fullband.html www.jh4vaj.com/archives/42905

@dufourstephane5808 3 ай бұрын

J’arrive pas à avoir le 7 MHz ni 14mhz il commence a 20 MHz mon uv k5 (8)

@jh4vaj 3 ай бұрын

This uses firmware by KD8CEC. Hardware modifications must also be made. Please refer to this URL for details. www.hamskey.com/2024/02/introduction-to-uv-k5-hf-fullband.html www.jh4vaj.com/archives/42905

@dufourstephane5808 3 ай бұрын

@@jh4vaj merci 🙏

@dufourstephane5808 3 ай бұрын

@@jh4vaj je les télécharger toujours pareil il commence par 20 MHz il veut pas aller sur le 7 MHz ni 14 MHz 😤

@jh4vaj 3 ай бұрын

Which firmware are you using? As I wrote earlier, I need firmware for HF full band for KD8CEC. Note that you will also need to modify your hardware to use that firmware. Do not install that firmware on a UV-K5 without the necessary modifications.

@dufourstephane5808 3 ай бұрын

@@jh4vaj j’ai installé la version 0.22 je vous souhaite une bonne soirée merci pour laide que vous m’avez donné 🙏👍

@piah1976 3 ай бұрын

How get that?😊

@jh4vaj 3 ай бұрын

I designed this PCB. The gerber file is available on my blog (in Japanese, but you can understand most of it just from the pictures). With this file, you can make one too. www.jh4vaj.com/archives/42905

@guidelineuk4876 3 ай бұрын

I got Google Translate working overtime hahaha GREAT information thanks :-)

@piah1976 3 ай бұрын

try 0.4

@jh4vaj 3 ай бұрын

Thank you. I will try it.

@kostasspiliopoulos3352 3 ай бұрын

nice job dr om ... How can I find them? de SV3IRG Dinos 73

@IU3POA-lp9oi 3 ай бұрын

Maybe the click is due to power saving?

@jh4vaj 3 ай бұрын

It depends on the setting. The click sound can also be turned off.

@mickeymousee 3 ай бұрын

I just bought one of those and I cannot get anything on it at all on any frequency. I tried the wip antenna then an improvised long wire still nothing at all. Any help appreciated. I did hear that the skip has gone down a lot?

@jh4vaj 3 ай бұрын

If you receive nothing at all, it may be defective. I recommend contacting the seller.

@sidneycavalcant 4 ай бұрын

What antenna are you using?

@jh4vaj 4 ай бұрын

It has been a long time since I shot this video, so I am not certain of my memory. However, I think I probably would have used a long wire antenna. That is what I usually use for HAM radio.

@MrFramich 4 ай бұрын

Ariva sui 27 Mhz?

@Tokyo1991.JL1AJE 5 ай бұрын

初めまして、見たかった動画です。こちらの動画で似た結果でしたが多少バラつきがある様ですね。結果は4分辺りから kzfaq.info/get/bejne/o9iBl86UsNPRdqc.html FETのゲート電圧調整で特に不要な高周波数が多いバンドでは多少改善はできるはずです。色々調べている間にこの手のPAの元祖設計図を発見して、この間Xに投稿しました。ゲート電圧を測定しメモっておいてからいじりましょう。良いとされている電圧の範囲3.57~3.74V だそうです。また、各フィルターの構成からアンテナに近いインダクタに数pFのコンデンサを並列に繋げば、ローパスと共にバンドストップ効果が得られて新たに改善の余地はあると思います。 TinySA Ultra 入手次第いじり出す予定です。 X見て頂ければ、BNCカスタマイズも公開しております。 73s and thanks for the helpful video

@Tokyo1991.JL1AJE 5 ай бұрын

一応JH4VAJさまのブログで投稿したテスト結果を見たと言わないとコメント読者は混乱する。動画の詳細欄にリンクが貼ってあります。

@jh4vaj 5 ай бұрын

バイアス調整はやってみようと思っていることの一つです。まだそこまで手間が割っていないのですけど。 BNCへの改造は面白いですね。フォローさせてもらいました。

@Tokyo1991.JL1AJE 5 ай бұрын

フォローありがとうございます。お初です😭 近日中に引き続き関連情報を投稿する予定です。中華工場の休みの前に基盤データを出したり、また来月に試験を控えているので毎日工学のおさらいと法規の叩き込みで投稿ペースが落ちているところです。

@user-sc8sf6cp9q 5 ай бұрын

Hello, we are a manufacturer of affordable Flipdot, we hope to have the opportunity to cooperate.

@ferret757 5 ай бұрын

アンテナはどの様な物を使用されているのでしょうか

@jh4vaj 5 ай бұрын

このとき使ったものが何だったかは覚えていませんが、おそらく、ロングワイヤだと思います。多分、40mバンド（アマチュア無線）にATUで調整した状態だったのではないかと。

@maklegenderofficialchannel6644 5 ай бұрын

Teknik yg bagus gan😊

@Biru_to 5 ай бұрын

No way that I randomly found a video with "ELECTRONICOS FANTASTICOS!" music in the background. They were at this maker fair too.

@StratmanII 5 ай бұрын

I visited Tokyo in Feb 2023 and brought mine Tecsun PL-368. I was surprised to learn that Japan still has MW radio stations! 🙂

@johnnybagwash2456 6 ай бұрын

all them old tellys put to good use love it.

@ilovecrates 3 ай бұрын

Hopefully its a Japanese telly cuz the version of those can make babies happy

@yahiawalidyt 6 ай бұрын

ELECTRONICOS FANTASTICOS!

@saxhe710 6 ай бұрын

😂 This is BI9AKB , I’m a saxophone player too

@ErikKaashoek 6 ай бұрын

Pause communication in tinySA -App comms window

@jh4vaj 6 ай бұрын

That method has solved this trouble perfectly. Thank you.

@tzm1843 7 ай бұрын

What is it doing? Why does it keep changing? Is it broken?

@Sky1 6 ай бұрын

probably changing bands on his radio

@jh4vaj 6 ай бұрын

that's right

@frankfoduw-ci8rr 7 ай бұрын

Domo arigato

@ominkan3129 7 ай бұрын

Is there an LNA and Bluetooth and Hiz features working? Thanks for the video.

@StratmanII 5 ай бұрын

I have the ATS-25 AMP, which is advertised to as superior to the Max Decoder version. The AMP has LNA and Hi-Z/50 Ohm switching and has three light blue indicator LEDs on the left side. It's the first of the ATS-25 series to have external LED lights and is supplied with Harduino's 4.17 Air beta firmware. WiFi works seamlessly but Bluetooth is not implemented. I have no idea if the AMP's hardware lacks a BT module or the firmware doesn't support it yet.

@ominkan3129 5 ай бұрын

@StratmanII Thank you for the information. It sounds like you are happy with 25 amp. I think I bought to soon.

@StratmanII 5 ай бұрын

@@ominkan3129 You're welcome. I don't think the ATS-25 AMP is much of an improvement over the Max Decoder. It is still plagued by the lack of adequate RF shielding and the annoying loud pops when the demodulation mode and bands are changed. The ATS-25's color LCD screen itself emits so much RF noise that even my Malahit DSP1 clone SDR placed a foot away from it _registers micro spurs_ on its FFT display. If the noise were limited internally it wouldn't be so bad but it seems that the ATS' brushed aluminum casing can't even contain the RFI. It's probably leaking into the BNC telescopic whip and radiating out. Apart from the physical blue LED indicators there's little to distinguish the AMP from the Max Decoder. The LNA does work like the one in the ATS-120, but it also amplifies noise. When switched to the Hi-Z mode for the whip antenna, my ATS-25 AMP seems to attenuate the signal, so I leave it on the 50-Ohm selection for maximum sensitivity. I do have a Megaloop MLA-30+ active antenna but I'm waiting to receive the BNC-to-SMA adapter which I've recently ordered. I bought the ATS-25 AMP out of curiosity and I think it has a long way to go before it can be called a refined, finished product. 😞 Features like Noise Reduction, Noise Blanker and EMI Reduction which are amazingly effective in the Malahit DSP1 architecture is absent from the ATS-25 series. It could be the Si4732-A10's DSP chip limitation but there are cool features like the scalable retro frequency dial, analogue style S-meter, station seek function, WiFi, etc that the Malahit DSP1 does not have. The only feature that I look forward to is the upgradability of the ATS-25 firmware. The ATS-25 AMP is a really cool toy, but the fact that the designers can't even iron out annoying bugs like the RF noise makes this receiver less enjoyable than I had hoped for. Suffice to say, I won't buy an ATS-25 receiver again if mine were lost or stolen. 📻😐

@ominkan3129 5 ай бұрын

@@StratmanII That was great to read and you have it very well figured out, all its shortcomings and its positive features. The Malahit surpasses it in many ways, especially with the spectrum meter and waterfall and as you say, the excellent noise reduction. The ATS 25 max decoder, I am glad has the ban scan function which is fun. The best part is the availability of such radios if you can't lay out the funds for the big names but still can listen to the HF bands. Thanks again for your comments and I wish you a very Happy New Year with a lot of radio fun.

@Tokyo1991.JL1AJE 5 ай бұрын

Could be the touch screen scan is emitting RF noise. If there is a screen/button lock function you could try activating it to see if the noise emission stops.