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Multiband HF Projekten - Versterkers

Klik voor vergroting18 dB LT1253 DDS Amplifier by K8IQY
This 18 dB gain amplifier was built Manhattan-style to evaluate the Linear Technology LT1253 dual video amplifier as a candidate output amplifier for DDS systms employing the Analog Devices AD9850 and similar devices.
http://www.k8iqy.com/miscellaneous/18dblt1253ddsamplifier/lt1253ddsamp.htm

Klik voor vergrotingBasic Linear Amplifier by SMVPO
This is both a project AND a bit of basic theory regarding the design of wide-band HF power amplifiers. As usual, it is prompted as a result of e-mail in which I have to repeat myself over and over again.
http://www.sm0vpo.altervista.org/tx/rf_pa_cct_00.htm

Klik voor vergroting4-1000A Project HF Amp by NT8N
This is my new project an 80 -10 meter band switchable HF amp using a 4-1000A. I will be adding to this page as I proceed with the project. So check back often.
http://www.qsl.net/nt8n/project.htm

Klik voor vergroting500 Watt PA by SMVPO
Although I am an avid proponent of QRP (using reasonable power levels), there are times when I wish that I could run 1,000,000 watts and point it in a particular direction.
http://www.sm0vpo.altervista.org/tx/500w-txt.htm

Klik voor vergroting70-100 W transistor HF versterker door PAFRI
Hier zijn diverse HF en VHF projecten met transistoren letterlijk nagebouwd, maar in de praktijk was een behoorlijke modificatie nodig om een goed werkend apparaat te krijgen.
http://www.xs4all.nl/~pa0fri/Lineairs/BLW60PA/pa-blw60.htm

Klik voor vergrotingA MosFet PA by G3ONL
This circuit was described in Sprat 73 by G3ONL and is capable of 5 watts out on all bands. Diode D1 is included to protect the power device, preferrably a hot carrier or gold bonded germanium diode.
http://www.zerobeat.net/g3ycc/mospa.htm

Klik voor vergrotingHF Bands QRP Linear Amplifier by SMVPO
This is a rather unusual QRP Power Amplifier design, with a wide frequency response; within three dB's from 300KHz to 30MHz. Overall gain is in the region of 16dB and the final output power may be well over four watts.
http://www.sm0vpo.altervista.org/tx/linear.htm

Klik voor vergrotingHF Linear Amp by EI9GQ
The 50R input of the amp. is matched to the 200R grid resistor by a 1:4 impedance ratio (1:2 Voltage) transformer. Screen grid (G2) voltage is generated by voltage doubling some of the grid drive RF.
http://homepage.eircom.net/~ei9gq/amp.html

Klik voor vergrotingHF Linear RF Power Amplifier by YBAH
It is nowadays hard to find replacement for RF Final tubes such as 6146B 6JS6 etc. Stocks in the market seem to be very limited, besides it is very expensive too.
http://yb0ah.tripod.com/homebrew/project/pwr_amp/index.html

Klik voor vergrotingJBOT - An SSB linear amplifier made from Just a Bunch of Transistors by VU2ESE
JBOT stands for Just a Bunch of Transistors. It is a simple, stable and easy to build 5 watts linear amplifier build out of a bunch of ordinary low power NPN transistors.
http://www.phonestack.com/farhan/jbot.html

Klik voor vergrotingLinear-Endstufe mit PL509 / PL519 durch DL2YEO
Die PL509/519 sind zwar keine echten Senderhren, aber diverse Artikel und Bauprojekte im Internet belegen, dass man damit durchaus eine zufriendstellend funktionierende KW-Endstufe (Linear RF Amplifier) fr wenig Geld bauen kann.
http://www.qrp4u.de/docs/de/PL519/index.htm

Klik voor vergrotingMasthead PreAmp by SMVPO
I have received several requests for a masthead preamplifier for use in the VHF spectrum. The power and switching circuitry may be made independant of the frequency so here I have presented two versions of a circuit I used ...
http://www.sm0vpo.altervista.org/antennas/preamp-0.htm

Klik voor vergrotingMini power Williamson Amplifier by JF1OZL
When I was about 14 years old, I learned about Williamson amplifier and Ultra Linear amplifier on the radio magazine. Such amplifiers was made by many tubes and Push Pull type transformers.
http://www.intio.or.jp/jf10zl/williamson.htm

Klik voor vergrotingMy 813 Linear Amplifier Project by WB8ERJ
Actually this rig came back to haunt me. You see when I was in high school, I was a member of an Explorer post that was into Ham Radio. There was a big room full of WWII surplus gear. This particular rig was our "pet" project.
http://www.wb8erj.com/813amplifier.htm

Klik voor vergrotingPL519 FRINEAR 150, 150 W (QRP) Versterker door PAFRI
Dit eenvoudige ontwerp van een HF versterker met een TV lijnuitgangsbuis EL519 of PL519 is zeer geschikt om het vermogen van een 5 W QRP transceiver naar 80 100 W te brengen.
http://www.xs4all.nl/~pa0fri/Lineairs/Frinear150/fri150.htm

Klik voor vergrotingPL519 400W HF Versterker FRINEAR 400 door PAFRI
Er bleek vraag te zijn naar een "eenvoudige" en goedkope lineair voor een moderne 100 W all-band transceiver. ... Door regelmatig vlooienmarkten te bezoeken kan men onderdelen vergaren om voor een redelijke prijs ...
http://www.xs4all.nl/~pa0fri/Lineairs/Frinear400/Frinear400.htm

Klik voor vergrotingPush-pull Linear Amplifier with NE592 Driver by DL2YEO
Transformer T1 matches the relatively low impedance present at the VFO FET gate to the balanced inputs of the NE592. With a unipolar power supply, it is necessary to bias both inputs to roughly one-half of Vcc.
http://www.qrp4u.de/docs/en/rf_ampl/index.htm

Klik voor vergrotingQRO GU-84B Tetrode by NI4L
The GU-84B is a ceramic-metal forced-air cooled tetrode intended for use in power amplifiers with distributed amplification and for SSB-signal amplification with output power up to 2.5 kW at frequencies up to 75 MHz ...
http://www.angelfire.com/nb/ni4l/gu84b.html

Klik voor vergrotingQRP HF Linear Amplifier by SMVPO
This project was a particular surprise for me in that the BC547 (equiv 2N2222) can be used to build a 500mW linear amplifer covering the entire HF band with excelent spectral purity and no neutralising at all.
http://www.sm0vpo.altervista.org/tx/qrp-hf1.htm

Klik voor vergrotingSMVPO 500mW Linear Amplifier by VK2ZAY
This is my implementation of SM0VPO's tiny HF linear amplifier. You can find his original page about the design here: Harry's Homebrew Homepages.
http://www.vk2zay.net/article.php/04

Klik voor vergrotingTB3/750 FRINEAR 750 door PAFRI
Deze versterker met een buis in een geaarde-rooster-schakeling is universeel opgezet om meer dan n type zendbuis te kunnen testen en gebruiken.
http://www.xs4all.nl/~pa0fri/Lineairs/Frinear750/frinear750.htm

Klik voor vergrotingThe 500W PA by G3YXM
This is the base station version of my Throbatron MosFet PA, it hasn't gone off bang for over ten years now! The MosFets are IXFH58N20 which cost about 10 each from Farnell. They have an "on resistance" of 0.04 Ohms and will dissipate about 300W each.
http://www.wireless.org.uk/throb.htm


Creatie datum : 10/08/2007 @ 22:33
Laatste wijziging : 21/09/2015 @ 22:01
Categorie : Multiband HF Projekten
Pagina gelezen 56293 keren


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