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PA3EMY Ham radio activities
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PA3EMY Ham radio activities
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PA3EMY: January 2012
http://pa3emygeneric.blogspot.com/2012_01_01_archive.html
PA3EMY Ham radio activities. Friday, January 27, 2012. A lot of projects are in progress at the same time. One of the projects is a 70 MHz transverter with 27 MHz IF. It uses the same concept as the cb to 40 meter transverter described in one of my blogs. I made a 43 MHz signal by mixing signals from a 18 MHz Xtal oscillator and a 25 MHz Xtal oscillator. The 18 MHz oscillator is a VXO. TX signal is boosted by a 4 stage amplifier to 1 Watt. It works but I am a bit worried about the stability. IC-730 pre a...
PA3EMY: 80 /20 MHz transceiver fan problem audio problem
http://pa3emygeneric.blogspot.com/2014/09/80-20-mhz-transceiver-fan-problem-audio.html
PA3EMY Ham radio activities. Monday, September 15, 2014. 80 /20 MHz transceiver fan problem audio problem. I have decided to make the transceiver for 80 meter only. I may reconsider but I don't want to spend too much time on this radio. I intend to use it as a signals source for experiments with IRF510 based amplifier for 80 meter. Subscribe to: Post Comments (Atom). Spectrum analyzer using TV tuner. CB to 7 MHz transverter. 50 MHz SSB transceiver. 144 MHz FM transceiver. View my complete profile.
PA3EMY: December 2011
http://pa3emygeneric.blogspot.com/2011_12_01_archive.html
PA3EMY Ham radio activities. Wednesday, December 28, 2011. I finally found some time to work on the transverter. Now the transverter/cb radio is able to receive 160-10 meter. It consists of the folowing parts:. LO: sdr kits si570 vfo. Switchable bandpass filter: comes from russian ham parts. Power supply: Transformer taken from cb power supply. The Mixer is a sbl-1. The LO signal is amplified by a bfy-90 amplifier. This signal drives the mixer. I will give it a try anyway. Subscribe to: Posts (Atom).
PA3EMY: September 2014
http://pa3emygeneric.blogspot.com/2014_09_01_archive.html
PA3EMY Ham radio activities. Monday, September 15, 2014. 80 /20 MHz transceiver fan problem audio problem. I have decided to make the transceiver for 80 meter only. I may reconsider but I don't want to spend too much time on this radio. I intend to use it as a signals source for experiments with IRF510 based amplifier for 80 meter. Subscribe to: Posts (Atom). Spectrum analyzer using TV tuner. CB to 7 MHz transverter. 50 MHz SSB transceiver. 144 MHz FM transceiver. View my complete profile. 9 MHz if strip.
PA3EMY: May 2011
http://pa3emygeneric.blogspot.com/2011_05_01_archive.html
PA3EMY Ham radio activities. Friday, May 20, 2011. SWR bridge 160 meter. I need a SWR meter for the 160 meter transmitter. So I build one in an old 27 Mhz CB SWR meter enclosure. It is a ressitortype bridge.It looks like this one:. I use 2 100Ohm resitors in parallel to make the 50 Ohm . Those resistors can handle 1 Watt so I can use the bridge for 5 watt QRP transmitters. A bridge like this limits the mismatch for the TX. That is ideal for testing homebrew transmitters on air. PLL for AM transmitter.
TOTAL PAGES IN THIS WEBSITE
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PA3EGH.NL, HAM radio equipment and morse keys.
Welkom op de site van Jan, PA3EGH. In het begin ben ik veel actief geweest op 23 en 70 cm band. Ik heb daar erg veel DX gewerkt, dat betekend dus dat er verbindingen gemaakt zijn met alle landen in Europa. Ook heb ik in die periode veel verbindingen gemaakt via Oscar 10, satelliet communicatie. Na het behalen van het Morse examen. Was de toegang tot de HF banden (kortegolf) mogelijk. Via deze frequenties is het dagelijks mogelijk om verbindingen te maken met amateurs waar dan ook ter wereld.
My Hamradio Site
Skip to main navigation. Skip to first column. Skip to second column. Click on the flag for a translation of this site in english. Leuk dat je komt kijken naar deze site. De opzet is om informatie te. Geven over mijn station en de eigen ervaringen die ik heb opgedaan met hamradio. Het motto is veel plaatjes en weinig tekst. Hyendfed, topendfed, endfed, top-end-fed. Momenteel ligt mijn interesse bij HF en (goed) SSB audio binnen de 3kHz. Ik heb er plezier in. Kun je op deze site vinden.
Homepage PA3EKI ook voor de Condor-16 & Condor-3000 (AMATEUR RADIO knop) of www.condor3000.net
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Homebrew 144 MHz transceiver
Homebrew 144 MHz transceiver. Homebrew of a 144 MHz FM transceiver using PLL synthesizer. Sunday, October 3, 2010. On the web I have found a lock detector circuit for the 4046. I may build this someday. For Now I use a TX delay when repeaters are used. A good low noise preamp may help to improve sensitivity. The sensitivity is not bad but my yeasu is better. I hope the sensitivity can reach the same level. Then I can use the repeater in Bregen op Zoom PI3BOZ. Friday, June 11, 2010. Tuesday, June 8, 2010.
CB to Ham transverter
CB to Ham transverter. Attempt to design and build a multiband transverter to CB. Vrijdag 22 mei 2015. After some refinements The transvertor is usable. However I am not satisfied with its performance. So I will need to make more adaptions. At some bands edges the harmonic suppression is not good enough. Fortunately the ssb part of the bands are usable. The CB radio has no CW anyway. The receiver works quite well, even on the crowded 40 meter. SSB TX signal sounds good. Maandag 6 oktober 2014. It was int...
PA3EMY
PA3EMY Ham radio activities. Thursday, March 10, 2016. On ebay I found a 45 watt amplifier kit. It was really cheap so I bought it. I will describe my findings here. The specifications looked good. 45 watt or more on the lower HF bands and still 25Watt at 10 meter. I was skeptical about this. It uses 2 IRF-530 Fets. On internet I did not find an IRF-530 base amplifier that was able produce that output on 10 meter. The schematic comes from a more recent version of the manual I found later. These levels ar...
pa3emyspectrumanalyser.blogspot.com
Homebrew spectrum analyzer
Construction of spectrum analyzer using UDT-401 tuner. Dinsdag 8 juni 2010. Strong harmonics are created internally when the signal level is high. Signals must be attenuated 20 db. This reduces dynamic range to 50 db. So, although dynamic range is 70db , only 50 db is available for measuring harmonics. I am adding dipswitches to the processor board. They will be used to set the calibration points for the horizontal calibration. Vrijdag 21 mei 2010. Zondag 16 mei 2010. Putting modules in box. Secure mains...
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PA3ESX – Radio zendamateur
Foto’s van PA3ESX. Foto’s van de Condor 16 46. Foto’s van Lemmer. Welkom op de website va PA3ESX. Op de site vind u foto’s, linkjes en andere dingen die te maken hebben met zendamateurs. 2016 - PA3ESX.NL.
PA3ESY
De Pupil van Maxwell. Maxwell / Pupil ed. WWII Radar nabij Goor. Ir G Hofstedeschool MTS. Deze site is opgezet om mijn verzameling oude communicatie-apparatuur en aanverwante zaken, aan een groter publiek te tonen. Incidenteel worden ook apparaten, die niet in mijn bezit zijn, beschreven. Voor zover dat mogelijk is, wordt, zij het in beknopte vorm, informatie verschaft over de verschillende getoonde onderwerpen. De meeste artikelen worden in de nederlandse taal gepresenteerd.
PA3EVY
Won a new shirt from rabobank,. Abonneren op: Posts (Atom). Ultimate web translator with flags 2. Thema Supercool. Thema-afbeeldingen van RBFried. Mogelijk gemaakt door Blogger.
