Results tagged #Transceiver in Circuits
Yves OESCH HB9DTX Transceivers modifications
The original firmware is usable on the amateur radio bands, but is not very convenient to use. Wulf-Gerd, DL1FAC has developped a new firmwa...
GenesisRadio Transceivers
Later, I will use the same pivot table to list the parts out by each of the 8 phases in the build, organizing them into phase-specific bags ...
transceiver circuits
The unit is based on a PHILIPS FM880 link transceiver which was originally supplied to a Telecom Australia specification for telephone appli...
5 W ATV TRANSCEIVER
For the transmitter schematic (part of this transceiver), see entry entitled S-W ATV Transmit-ter for 440 MHz, Fig. 5-1. The downconverter p...
5 W ATV TRANSCEIVER
For the transmitter schematic (part of this transceiver), see entry entitled S-W ATV Transmit-ter for 440 MHz, Fig. 5-1. The downconverter p...
QRP CW TRANSCEIVER
This is a 3-W, single-circuit board, VFO-controlled CW transceiver for 40 or 30 me`ers, featuring a direct-conversion receiver with audio fi...
QRP CW TRANSCEIVER
This is a 3-W, single-circuit board, VFO-controlled CW transceiver for 40 or 30 me`ers, featuring a direct-conversion receiver with audio fi...
Transceiver circuits
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Transceiver circuits
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KWM-2 and KWM-2 Transceivers
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144MHz All Mode Transceiver
The main characteristic of the transceiver presented below is the simplicity, but in the same time giving good performance, with a minimum i...
FOUR BAND CW TRANSCEIVER WITH DIRECT CONVERSION
The performance of the 80 meter CW transceiver using the phase method for side band suppression is very good. Construction was easy with all...
80 METER CW TRANSCEIVER WITH DIRECT CONVERSION
The RF signal is split into two signals that are shifted 90 degrees out of phase (one plus 45 and one minus 45 degrees). Both are mixed to a...
HAM ATS3a digital
I have managed to let the stock ATS-3A transceiver transmit nice BPSK31 "cq ok1iak". The firmware of ATS-3A was modified to allow serial lin...
2N2/15 CW Transceiver Design Page
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A 70cm Wide-band Transceiver Concept
This article presents a description of a 70cm wideband transceiver for duplex operation. The modules are designed for operation in a 200 kHz...
Icom IC-751 (IC 751 IC751) transceiver mods reviews software and diagrams
The 751 required turning the volume control almost to 12 o`clock before getting any hearable volume so I thought maybe something was wrong h...
N6EX Exciter Mods
This page identifies all the hardware modifications necessary to adapt a Kenwood TK-931 transceiver for operation as a 2 watt exciter for 92...
F6DQM Software Interfacing you computer
More examples to connect your transceivers to the computer for SIMPLEX software operations are described in the pc_tx. bmp file that is incl...
7MHz CW transceiver made with Motrola MC3362P
The 7MHz CW transceiver made with MC3362P. I made a 7MHz CW transceiver by using the IC for the narrow band FM double super receiving circui...
50MHz 10mW handy transceiver
One day on the 50MHz SSB-QSO, my friends JE3TXU/1 (Mr. Haraguchi) sad to me that he made 50MHz very small transceiver. I said to him that he...
transceiver module
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75 meter qrp ssb transceiver
In general, the transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the si...
walter duo
This transceiver (combined transmitter and receiver) built by Walter KrG¤mbring uses an Auriel devices for transmission and reception. This...
ic718
Modification of the Icom IC-718 Transceiver for ALE, to de-activate the transmit bandpass relays during receive and scanning.....
four band cw transceiver
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5W 80M Cw Transceiver
This transceiver has a 3-stage transmitter and a direct-conversion receiver. Ql is the transmitter"s oscillator, an...
Qrp-cw-transceiver
This is a 3-W, single-circuit board, VFO-controlled CW transceiver for 40 or 30 meters, featuring a direct-conversion receiver with audio f...
40M-cw-transceiver
The unit consists of a direct conversion receiver and 1-W transmitter. The direct conversion receiver VFO is tuned just off frequency from t...
30m Band CW-Transceiver
This simple QRP transceiver for the 30 m band did not result from a detailed requirement profile. I simply had some NE592 broadband amplifie...
Tx/Rx Control
This circuitry offers some features that are highly desirable when building a QRP (or ANY) transceiver. It also includes a combination of fe...
Transceiver for 20 m band
The transceiver is composed by three single sided printed boards 100x70 mm, theese may be
stacked so as to reduce the overall size of the m...
40 meters CW Transceiver
This project describes a little QRP transceiver full legal power” (5 W at 12 V) for the 40
meters band. The RIG may be built in a gradual...
A 40 meter QRP - Transceiver
This was one of my very first transceiver developments. This page was also one of the very first circuit descriptions that I put on the inte...