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HF Propagation


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20m Projects - SSB Transceivers

Click to enlarge ALIGN="Dual-Watch" 20m SSB Transceiver by YO3DAC/VA3IUL
ICOM introduced for the first time "Dual-Watch" architecture in IC-781 model. This is a very practical compromise which offers limited dual-receive capability. It eliminates the complexity and costs associated with a second IF chain and demodulator.

Click to enlarge14MHz SSB 10mW Transceiver by JF1OZL
I wanted to QRV on 14MHz SSB mode. I have known that 14MHz can be used for domestic communication. They made Japanese domestic QSO about 14.18MHz

Click to enlargeA “lean design” SSB-Transceiver for 14 MHz by DK7IH
The radio originally was designed as a study for my “Old School Transceiver“. After having not built a “real” analog VFO for a number of years I wanted to find out if I still can set up a construction that is really stable concerning frequency.

Click to enlargeA compact handheld QRP SSB transceiver for 14 MHz by DK7IH
I have really been satisfied with my last QRP SSB rig. It performs very fine. But I wanted a transceiver still a little bit smaller. And it should be easier to set up the rig if you are outside to make quick QSOs.

Click to enlargeAn improved AGC control for the 14 MHz/20 Meter handheld QRP SSB transceiver by DK7IH
Ken, WA2MZE, commented on my article about the 20 Meter/14MHz QRP SSB handheld transceiver. He gave me some inpsiration to revise the AGC circuit.

A QRP SSB/CW Tranceiver for 14MHz by W7ZOI
Part 1: Exotic circuitry and hard-to-find components aren't necessary if you want to build excellent performance into a home-brew SSB/CW transceiver: Careful design is the key.

A QRP SSB/CW Tranceiver for 14MHz by W7ZOI
Part 2: This moth, W7ZOI rounds out his description of a 1- or 10-W SSB/CW rig with details on its transmitter, TR switching and optional speech processor.

Click to enlargeBeta II - a 20m SSB transceiver by PS7PC
This transceiver is a new version of a rig published in AN-EP, a traditional brazilian Ham magazine of 1992, march / april issue by Carlão PS7PC.

Klik voor vergrotingHF TRX with PTO based VFO by VK2ZAY
While surfing around the 'net I came across WA6OTP's website. Now I've seen PTO based VFOs before, but his implementation is very simple and elegant. I just couldn't resist the urge to build one myself and try it out.

Klik voor vergrotingMy Homemade 20m HF SSB Transceiver by OZ2CPU
Output power is now only 4mW, from the Re-used input RF amp that also works as a filter, to only amplify the wanted difference from the mixer, not the sum.

Click to enlargeTaurus SSB transceiver by SP5DDJ
When Aquarius project became more popular many QRP-ers asked me if I could develop simple ( means duplicable) SSB version of low cost QRP transceiver.

Click to enlargeQRP Transceiver for the 20-Meter-Band (SSB) by DK7IH
This is a very compact SSB transceiver for the 20-Meter Band. This band is still my favorite band for QRP operation. The objective of the design were to be compact in size, 5 watts PEP output, a single conversion superhet, DDS-VFO and SSB (phone) operation only.

Click to enlargeThe „Micro20 III“ – A Simplified Pocket Size SSB Transceiver for 14 MHz by DK7IH
After having built my first shirt-pocket transceiver about a year ago I occasionally thought of how this or a more or less modified design could be made simpler to save components and therefore limit space as well as reducing the complexity of the whole rig.

Click to enlargeThe Micro QRP Transceiver – A pocketful of radio in SMT by DK7IH
Recently I thought about how small a fully functionable ham radio could be. Or to say in other words: Should it be possible to build a QRP SSB transcevier that fits into a shirt pocket?

Click to enlargeUn transverter 50/21 Mhz de F6FEO
Utilisé conjointement au transceiver 50 Mhz décrit dans ces pages, ce transverter redonnera vie à la station 6 M non utilisée . Cela concerne notamment les longues périodes durant laquelle la bande est déserte.

Creation date : 02/09/2013 @ 18:53
Last update : 27/09/2020 @ 17:59
Category : 20m Projects
Page read 36050 times

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