HBR602-40m contact test

I got this youtube video from one of our loyal customer “OM Glenn” from Manado. This video demonstrated his first QSO with another station using Hambuilder HBR602-40m 25 Watt transceiver module. This contact made around 940 km from Manado to Balikpapan (see attached picture from https://www.freemaptools.com/measure-distance.htm). He got signal report S5/9.

Well, in my opinion, using 25 watts for 940 km not bad at all. We hope we can make further improvement from positive support like this.

 

 

It ready to buy now please visit link below :
https://hambuilder.com/product/module-hbr602-40m/ for only U$73

Hambuilder Team

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HBR-SDR1 protoype

Purwarupa Hambuilder SDR1
*. IC FST3253 digunakan sebagai pencampur utama Tayloe
*. VFO dengan pengali empat menggunakan IC Si5351
*. IC dual opamp NE5532 sebagai penguat baik RX maupun TX

Unit mixer ini sudah dapat bekerja dengan baik dan berhasil melakukan penerimaan (RX) dengan sensitivitas sekitar 20uV, dengan menambahkan 1 tingkat penguat (LNA) maka didapat sensitivitas sekitar 0.1uV. Pada sisi pemancar (TX) output unit mixer ini jauh lebih besar dibandingkan dengan mixer dual conversion umumnya. Penambahan unit RF PA pada sisi pancar dapat menghasilkan 25watt secara total.

Pada kesempatan terpisah akan kami bagikan video sessi test prototype unit ini menggunakan Personal Computer (PC) dan perangkat lunak HDSDR. Kami berencana menggunakan unit ini pada 2 jenis produk yaitu unit yang bekerja bersama PC maupun unit pemancar SDR mandiri (standalone SDR).

Hambuilder Team

HBR602-10m/11m RX Test

By using the same board with HBR602-40 we build SSB CB by re-arrange the Band Pass Filter and Low Pass Filter component value. I knew so many OM claimed the NE602/SA602 chips series where noisy. I thought that’s not 100% true, please find out the video test below. The chips were not as bad as they said. You may disagree, but for me, the noise of an RF signal means this radio is a “radio”. I always image the waves bring the noise came across the atmosphere or maybe all the electron inside the electronic circuit board worked very hard to produce enough gain (lol). My suggestion if you want a crystal clear sound then you need to build a hi-fi stereo set, not a radio. But yes next on our product roadmap Audio DSP by using FIR filter, digital AGC and etc to increase the “listening experience”.

I hope this product will reborn the CB era, at least in Indonesia.

Dian Kurniawan

SSB CB Reborn

Setelah sebelumnya meluncurkan HBR1HF, juga mempertimbangkan masukan dari rekan-rekan pengguna radio di Indonesia serta keinginan mengingat mengenang kembali era 80an Hambuilder berencana meluncurkan produk CB Transceiver. Saat ini “HBRCB” sedang dalam tahap protoype akhir. Pilihan desain jatuh pada penggunakan SA/NE602 sebagai mixer dan demodulator, lalu ladder xtal fillter sebagai SSB konverter nya. Ya product ini hanya mensupport SSB mode pada CB. Selain karena alasan harga juga kesederhanaan serta metode xtall filter menjadi alasan utama.

Hasil uji prototype HBRCB di lab Hambuilder menunjukkan hasil yang menggembirakan. Sensitivitas yang sebanding dengan BitX dan noise level yang cukup rendah cukup menjanjikan.

Spesifikasi :
*. mixer SA602/NE602
*. modulator SA602/NE602
*. Frequency synthesizer Si5351 (VFO/BFO)
*. ATMega16 Controller
*. IF 11.059200 MHz
*. SSB Modulation
*. 7segment Display
*. LED S-meter
*. Power 25Watt at 13.8V
*. RJ-45 Microphone connector
*. Dimesions 126mm (w) , 40mm (h), 132mm (d)
*. Aluminum enclosure

 

Hambuilder Team

New HBR4HF released

New HBR4HF is a compact 4 Band HF transceiver.
This simple and low cost radio is also suitable for entry level HAM to start do communication on HF band.

*. Assembed unit, tested and ready to use.
*. New 2.2 Inch TFT display,
*. 4 amateur band (80m, 40m, 30m sharing filter with 20m)
*. TX covering 80m/40m/30m/20m,
*. RX covering 3.5-14.5 MHz,
*. Step 1Hz, 10Hz,100Hz,1KHz,100KHz,
*. Output 13.8V 45-50W,
*. CW SSB modulation with 700Hz tone,
*. Display VFO A/B, mode, Smeter, Band, RX/TX.
*. IF Freq 11.059.200.

Band Coverage (programmable) :
80m (3.500.000 – 4.000.000)
40m (6.000.000 – 7.250.000)
30m (10.100.000 – 11.500.000)
20m (14.000.000 – 14.349.999)

Package:
*. Exciter complete set
*. DC chord
*. Condenser Microphone

store link New Hambuilder HBR4HF

 

 

Hambuilder Team