or single side band (SSB). That can be done at either the RF fre- quency or the IF, although IF BFO's are much more common. The shortwave receiver's input coupling network provides tun- ing and impedance matching from the 50-ohm antenna input to the 1500-ohm input of the NE602 . A really good receiver would use double or even triple. A prototype SSB receiver using a Si5351 as the VFO and BFO. The IF filter is a 5-crystal ladder filter with 2.5 kHz of bandwidth. I reused the code and circu. This is a test of the DDS VFO, a simple DC receiver with NE602 and a simple AF, no filters.SSB Receiver using Si5351 and SA602 >>. 4490 0 4. The Sudden Scratch Built SSB Transceiver 2018. 12152018 The Transmit. Jan 01, 2022 &183; An NE602 SSB Design from China The KN-Q7 by BA6BF. Direct conversion 7MHz receiver using NE602 - Schematic only, no circuit description. I've learned a lot. NE602 RX designs of fellow ham radio amateurs, VK2YE, AA7EE and ZL2BMI helped me a lot to understand the inner workings of NE602SA602 based direct conversion receivers. quot;>. Troubleshooting phasing SSB projects can be harder than with DSB rigs, especially with feedback in the driver and power amplifier stages. This feedback can sometimes come via the 7 MHz tuned circuit on the output of the balanced modulator, made worse by the connection of the capacitor from the receiver RF amplifier (even though power is removed from this on transmit).

I am looking for a way to build a 2 meter ssb receiver for hearing the sat P3D. After I get the receiver working I plan to get to work on a 70cm ssb transmitter to work For the 2m converter, you could use a NE602 or a SBL-1 (if you want better front-end performance) and of course an RF preamp (BF981 again) and xtal.. Similar units were made for HF bands (with higher power), on 6m and even 4m a-qrp-ssb-cw-transceiver-for-14-mhz 11 Downloaded from nagios-external This month, W7ZOl rounds out his description of a 1- or 10-W SSBCW rig with details on its trans- mitter, TR switching and optional speech processor 5MHz SSB 10w transceiver by JF1OZL 35 MHz on. or single side band (SSB). That can be done at either the RF fre- quency or the IF, although IF BFO's are much more common. The shortwave receiver's input coupling network provides tun- ing and impedance matching from the 50-ohm antenna input to the 1500-ohm input of the NE602.

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Troubleshooting phasing SSB projects can be harder than with DSB rigs, especially with feedback in the driver and power amplifier stages. This feedback can sometimes come via the 7 MHz tuned circuit on the output of the balanced modulator, made worse by the connection of the capacitor from the receiver RF amplifier (even though power is removed from this on transmit). . miniature 455KHz SSB filter F1 SA612AN Pack of 4 Same as SA602, NE602, NE612 8 pin DIL One of the most popular chips for QRP TXRX mixerOsc 423 views5 year ago The 74HC4066 (Motorola or Texas) was chosen after a discussion with LA8OJ, and he claimed he did extensive tests and it was almost impossible to overload it when running on 10-11V DC. NE602MAX295 direct conversion receiver. cut off3khz. 2 Layers PCB 59 x 94 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen . RK-60 For 6m AMer, duble super heterodyne receiver using LA1600 and NE612.For ssb ,you do on bfo switch on. 455kHz marker for radio builder IF 455kHz,.