LY3LP laboratory

Minwa 9v 2A

2012-02-04T02:25:00.000-08:00

After removing 3,3 m wire I have 6,3v x 2A
transformer. No need to disassemble the transformer!

PTO-VXO 28MHz 1w TX

2012-01-27T00:44:00.000-08:00

Very simple PTO -VXO . 10,7 MHz coil , glued on ferrite rod - shirt button.

Laser controller

2012-01-22T23:16:00.001-08:00

Laser controller -Oriflame anti perspirant deodorant.

ZYT5230-230 230V DC 60 W

2012-01-17T20:09:00.000-08:00

DC motor , 32 poles ,11,2 degrees, 230 V, 60W

28 MHz VXO - PTO RX with FET

2012-01-13T03:37:00.000-08:00

Wind turbine

2012-01-11T04:45:00.000-08:00

Ultra simple AC powered LED

2012-01-10T00:47:00.000-08:00

SnaLY-160 (Scalar USB network analyzer)

2011-12-28T06:02:00.001-08:00

Hardware used here is a mix of AD9951 (based on Pick a Star team‘s DDS VFO), Atmega8 firmware parts using libusb and DG8SAQ code. LPF by DL5MGD . Detector is taken from AD8307 datasheet.

Technical specification:
OS: WinXp, Vista, Windows7 (64 ir 32 bit)
Sweep range: 100 KHz – 160 MHz.
Generator range: 10 KHz – 160 MHz.
Output ~1,7 V pp on 50 Ohm load
Achievable measurement range -75... +17dBm (limited by AD8307 and construction)
Powered directly from USB (~70mA)
Software calibration function for linearization.

This tool is completely freeware with source code available for controller firmware and desktop software. Driver installation instruction.

Shortly about software.
I tried to make software intuitive – one can get used to it within minutes :-)
There are two markers controlled by left or right mouse buttons.
If mouse pointer is placed on dB window edge – amplitude measuring range may be expanded/collapsed using mouse wheel.

If you have questions/comments feel free contacting me: LY3H.Zilvinas@gmail.com
Happy exploring (building/using)

73! Žilvinas LY3H

Thank LY3LP, LY2SS

Joule thief

2011-12-21T01:17:00.001-08:00

28 MHz VXO - PTO

2011-11-26T04:19:00.001-08:00

Is very good , KE7HR Paul R. Jorgenson -five crystal ,VXO . VXO my work on 28,2 MHZ

24 MHz VXO - PTO

2011-11-23T04:19:00.000-08:00

Ring turbine

2011-11-08T10:23:00.000-08:00

CD wind turbines

2011-11-06T08:09:00.000-08:00

2011-11-06T08:07:00.000-08:00

2011-11-06T08:06:00.000-08:00

CD wind turbine with "joule thief",when the wind blows, at night, lights up well

28- 28,080 MHz RX

2011-10-24T23:50:00.000-07:00

Floppy vertical axis CD wind turbine

2011-08-29T23:44:00.000-07:00

Voltage multiplied by 4

Generator 3w 6v

2011-08-28T02:29:00.000-07:00

Bicycle generator "Union" 3w 6v . Voltage multiplied by 4 times

"Heavy" gigahertzs

2011-08-20T23:40:00.000-07:00

Tried catch the internet - no luck. Will do solar collector. If it fails too - I'll make a table from it hihi

Simple 2,8w linear generator

2011-08-16T03:40:00.001-07:00

700 turns 0,2mm , coil 2,5cm x 1,5 x 1cm ,neodymium shiver, multiplier,the result about 2,8w output. Using wind turbine , can throw int the yard or garde all night for free .

Linear generator 16v

2011-08-04T00:49:00.000-07:00

Two 3000 winding coils, wire 0,2mm , 5cm x 5cm x 1cm neodymium magnet. 4v multiplied by four, the result is +16v about 0,7 A.

CD wind turbine with Epson stepper

2011-07-30T10:40:00.001-07:00

Epson stepper motor from a broken printer ,capacitors and diodes from an old computer. CD wind turbine turns on very low wind, very quietly, the LED light up brightly in the dark. Green energy cost 0 USD.

24 MHz QRP TX

2011-07-01T02:52:00.000-07:00

10m RX

2011-06-26T23:16:00.000-07:00

Simple 50,1 MHz converter with LA1185

2011-06-22T22:21:00.000-07:00

UB5UG not completed TRX

2011-06-20T04:03:00.000-07:00

Quartz crystals

2011-06-20T04:00:00.000-07:00

Second World War quartz crystals

14,068 MHz receiver

2011-06-16T23:21:00.000-07:00

50,060-50,1MHz RX IF 22,118 MHz

2011-06-08T04:15:00.000-07:00

28,00 - 28,100 MHz RX IF 22,118 MHz

2011-06-03T01:04:00.000-07:00

TDA 7052 28MHz receiver

2011-05-28T01:47:00.000-07:00

27 May, with 5meter wire, heard LA3G? SP...

50,06- 50,120 MHz TX

2011-05-22T23:08:00.000-07:00

The 50MHz RX "MINIMALIST"

2011-05-20T01:01:00.000-07:00

Fits like a tone control transmitter, frequency meter...

50,06 - 50,120 MHz RX

2011-05-18T06:01:00.000-07:00

This is my first attempt to draw schematics with gEDA (Linux). Overall I am very satisfied with the results.

28 MHz 1w QRP transmitter

2011-04-18T06:38:00.001-07:00

Nice emitter manipulation of the T1. T1-T3 any 150mc transistor. T4 is 1w, or two 2n2222 in parallel. T50-6 rings, perpendicular. If more power needed one can connect NB6M QRP "gallon".

28,096MHz mini beacon

2011-03-18T03:11:00.001-07:00

This one can be heard well within 5 meters.

432MHz - 144MHz mini beacon

2011-03-15T02:16:00.001-07:00

On 144 MHz it is heard well within 4 meters distance. 432MHz beacon is heard good about 30cm. For easy converters/receivers testing.

Linux Mint

2011-03-15T00:52:00.000-07:00

There was a silence in my blog due to migrating my old PC's OS from WindowsXP to Linux Mint.
The main reason for doing that was that my PC became unbearably sluggish - older PCs and modern anti-viruses don't match. It looked like it dedicated itself to antivirus and OS updating/maintaining tasks - not mine. Despite having constant updating OS and anti-virus (one of the industry leaders) I managed to catch some malware... (I do visit only hamradio related sites).

One can easy guess my reaction after that...

So far everything is going smooth - I like how responsive become my old PC and I have all the tools needed for my everyday work (echolink, spectrumlab, kdenlive). I don't miss Windows and seriously considering to abandon Windows in my Toshiba netbook.

73!

432 MHz TX

2011-03-12T00:12:00.000-08:00

Used the fundamental harmonic 24MHz quartz.Multiplied by the apperance of 432MHz . TX easily reapyted, uncritical.Coil L2 may not be connected, directly to the antenna coil L1 the signal strenght is. Best to use SMD coponents. Error,T1 emitter 36 pf not 1000pf

432 MHz Slim Jim antenna

2011-03-10T04:14:00.000-08:00

Slim Jim antenna is well suited as field indicator . 100micro A device used 1N5711 diodes. Field indicator finished. Maxlog with a standard antenna ,the indicator arrow for fully tilted 5m Diode conecion uncritical.

Maxlog dualbander

2011-02-06T23:50:00.000-08:00

Double snake

2011-01-24T02:29:00.001-08:00

U5D. Hamradio expedition to Rahov, Carpatians, Ukraine. 1979

2011-01-19T01:14:00.000-08:00

I was invited to come to Rahov, Ukraine by Yuri Medinets UB5UG (SK).
Without going into details, I accepted invitation and soon I was met in Rahov train station.
I asked to help me to get to the TV relay station, where rest expedition members already gathered.
Misha (operator of the relay station) asked me whether I have been in the mountains at night. After hearing the negative reply, he politely insisted to spend the night at his home. He was right: in the dark even locals do not dare walking in mountains!

Early morning, another repeater operator Wasilij transported me with his motorcycle "Kovrovec" to the top of the Mnt. Terentin (KN28cc, 1388 ASL).

I was pleasantly surprised: there was Vytas LY2PU (SK) and Kastytis LY2AA with their families. (BTW: Kastytis had "Volga" - the best car in the former USSR).
There also was UB5UG with younger son Alexej and Sergei Bunin ("Bunimovich") UB5UN.

We had nice dinner that evening.
Traditionally, my contribution was a bottle of "Dainava", and "skilandis" (Lithuanian traditional dish) from the "town of sausages" Garliava.
And of course, a few loaves of black Lithuanian bread, which Yurij Rafailovich Medinec was wery fond of.
We discussed Wasilij's trip down from the hill. It turns out that he drove back down from the hill with the timber tied to his motorcycle's back used as break system!

Misha and Wasia have made delta for 28 MHz and UB5UG's "zmeika" for 2m band.
Vytas' LY2PU F9FT antenna was slightly broken by mountain winds.
Kastytis LY2AA found easy solution: he simply tied cord to the antenna and then he could change direction of the antenna.
It was easy to do because all the time dominated by the west wind, and the radio waves to the east were blocked by hill.

Prior to the field day event, Sergey Bunin had a wonderful QRP QSO with UB5UG SSB transceiver on 28 MHz.
The Japanese operator did not believe his ears, but when we told him that the antenna is Delta and we are high in the mountains, he greeted us with good results.

The LY2PU had his own transceiver and he asked slovak hams to announce that there will be international expedition U5D operating on bands and hams should not be surprised hearing Lithuanian and Kiev hams appearing too loud.

The 144 MHz propagation was poor. LY2PU made QSOs with every station he could hear, except OE and DL stations.
Yurij with his son decided to go with the equipment to the bigger mountain.
Wasilij kindly proposed to carry them with his motorcycle.
Trip lasted long enough. We started to worry and when we heard UB5UG's CW signals, Sergey UB5UN noted: "Probably the rider of the motorcycle forgot to untie the timber!" Yurij worked CW unusually slowly and clearly. Then again UB5UN noted: It's cold on the mountain top and he can't send fast.

Another part of the team - women weren't boried either: after midnight, the TV relay station was re-translating entertainment programs from Prague to Moscow
It was the first time we saw Boney M instead of boring Soviet artists Gurchenko, Bojarski etc.
The TV program was very different from what we used to watch at home!
Yuri said: "I prefer Black eruption to Boney M!".
As I understand they were entertaining watching those West programs quite often.

"If you're already in Ukraine then you must see Kiev" offered Yurij.
Yurij demonstrated me his shack where he was creating a new ham rigs.
Besides miscellaneous ham equipment there were also mountain skis, mountain climbing equipment.

I spend two days in Kiev. Walked Kreschiatik street. It reminded me Warsaw, Poland.
Yuri introduced me to Karel Fechtel UB5WN (SK), who showed the Kiev club station. The club was also control station of Soviet hamradio satellites.
There were lot of equipment in racks.
Karel UB5WN didn't mention output power, but I guess it could be one or even two kW on 2m band.
Karel was very nice to me - he donated me "Dubus" magazine subscription for one year.
It was a great support at that time, bearing in mind that "Radio" magazine was filled with kind of "light effects" schematics.

I went from Kiev back to Vilnius by train. I missed my stop due nice chat with guys from Leningrad.
Instead Vilnius I arrived to Daugavpils - 150km away!
But in Rahovo I've bought compact bike. I took the ride to highway leading to Lithuania and then hitchhiked the truck.
It carried me to Karmelava, near Kaunas. The rest of journey (about 10km) I made with bike.
I was so tired that when got home I moved right to the bed.

Big thanks to Vytas LY2PU for pictures (at the end of posting) and filling gaps in memories!

U5D radijomėgėjiška ekspedicija į Rahov, Karpatai Ukraina. 1979

Mane atvažiuoti į Rahov pakvietė UB5UG Yurij Medinec (SK). Nesigilindamas į smulkmenas leidausi kelionėn. Rahove, traukinių stotyje pavakaryje mane pasitiko Miša, Rahovo TV retransliatoriaus darbuotojas. Prašiausi į Rahovo retransliatorių, kur jau buvo atvykę kiti ekspedicijos dalyviai. Miša manęs taktiškai paklausė, ar esu buvęs kalnuose. Išgirdęs neigiamą atsakymą, mandagiai pakvietė pernakvoti pas save. Jis buvo teisus: sutemus į 2km aukštį nekopia net vietiniai.

Iš ankstaus ryto kitas Rachovo retransliatoriaus darbuotojas Vasia motociklu “Kovrovec” mane “užkėlė” ant Terentino kalno (KN28cc, 1388 ASL), austrų-vengrų nutiestu, tašytų akmenų keliu.

Buvau maloniai nustebintas: ten buvo LY2PU Vytas Mickevičius (SK) su aparatūra 2m ir visa jo šeima, Kastytis Kemežys LY2AA su šeimyna (ir pačia geriausia to meto mašina “Volga”), UB5UG su jaunesniuoju sūnumi, Aleksėjumi iš Kijevo, Sergej „Bunimovič“ - Bunin UB5UN, taip pat kijevietis.

Tą vakarą neliūdėjom - sudėjom kas ką turėjom ant bendro stalo. Tradiciškai mano indėlis buvo butelis „Dainavos“ ir skilandis iš dešrų miestelio Garliavos. Žinoma ir juodos duonos keletas kepalų nes ją labai mėgo Yurij Rafailovich Medinec. Diskutavome apie Vasilijaus nusileidimą motociklu nuo retransliatoriaus kalno. Pasirodo, nusileido jis ne keliu, o prisikabinęs prie motociklo rastą kuris stabdė. Miša dėl to pralošė lažybas.

Retransliatoriaus kalne ant atatampų buvo ištempta delta ant 28 Mhz, UB5UG “zmeika” dviem metrams - tuo pasirūpino vietiniai Miša ir Vasia. Vyto, LY2PU F9FT anteną kalnų vėjas truputį sužalojo. Kastytis LY2AA “iš kirvio išvirė sriubą”: nieko neturėdamas labai gražiai anteną sutaisė tokiu būdu tapdamas vienvaldis antenos prižiūrėtojas, nes kai kalnų vėjas blaškė F9FT, Kastytis kaproninės virvutės pagalba įtempdamas ją reguliavo kryptį. Tai buvo nesunku padaryti, nes visa laiką vyravo vakarų vėjas, o į rytus radijo bangas užstojo kalnas.

Prieš Europos lauko dienos varžybas, Sergej Bunin padarė nuostabų QRP QSO su UB5UG SSB transiveriu ant 28 MHz. Japonas nepatikėjo, bet kai buvo paaiškinta, kad antena delta ir esame aukštai kalnuose, pasveikino su gerais rezultatais. Ant 144 MHz LY2PU buvo atsivežęs savo transiveriuką ir paprašė slovakų, kad paskelbtų, kad yra tokia U5D ekspedicija ir nereikės stebėtis, kad Lietuva ar Kijevas dėka fantastiškų praėjimu girdėsis Rumunijoje ar Čekijoje.

Ant 144 MHz praėjimai nelepino. LY2PU padarė QSO su visomis išgirstomis stotimis 2m diapazone, nors norėjosi padaryti QSO su Austrija ar Vokietija.
Yurij su savo jaunesniuoju sūnumi ir visa aparatūra kuprinėje iškeliavo ant esančio gretimais aukštesnio kalno.
Motociklu pasišovė pavėžinti iki kalno Vasilijus. Kelionė truko ilgokai. Ėmėme pergyventi ir kai išgirdome Morze stuksenant UB5UG šaukinį, Sergej Bunin pašmaikštavo: matyt motociklininkas buvo užmiršęs nuo motociklo atrišti rastą. Yurij labai aiškiai ir lėtai dirbo CW. Sergej UB5UN konstatavo: matyt ant kalno šalta ir Yurij negali pasiekti reikiamo CW greičio.

Kita komandos dalis, moterys neliūdėjo: vėlai po 12 valandos, iš Prahos TV retransliatoriaus į Maskvą iš Vakarų buvo transliuojamos pramoginės programos. Ten pirmą kartą pamatėme Boney M vietoje atsibodusių tarybinių artistų Gurčenkos ir Bojarskio. Programa skyrėsi kaip dangus nuo žemės. Yurij įsiterpė: „O man labiau už Boney M patinka Black Eruption. Кaip supratau šią atrakcija žiūrėti pramoginius koncertus iš Vakarų, mėgaujamasi nebe pirmą kartą.

„Jei jau esi Ukrainoje tai užsukam pas mane į Kijevą“ pasiūlė Yurij, kaip tarėm taip padarėm. Pamačiau Yurij “daržinę” - kambarį, kuriame jis kūrė naują aparatūrą. Ten stovėjo kalnų slidės, apranga, įvairi radijomėgėjiška aparatūra. Pora dienų pavaikštinėjau Kijevo Kreščiatiku, kuris man labai priminė Varšuvą. Yurij supažindino mane su Karel Fechtel UB5WN (SK), kuris parodė Kijevo klubinę stotį, kuri galėjo reikiamu momentu įjungti ar išjungti tarybinius radijomėgėjiškus palydovus. Stovėjo “stojkės” (aparatūros stovai)... Karelas nekomentavo galingumo, bet man rodos nemažiau 1 kW ant 2 metru buvo. Karelas UB5WN buvo man labai malonus - išrūpino Dubus žurnalo prenumeratą metams. Tai buvo svari parama, turint omenyje, kad „Radijo“ žurnale “klestėjo” šviesos muzikos schemos.

Iš Kijevo išvažiavau į Vilnių traukiniu. Užsiplepėjau su leningradiečiais ir išlipau Daugpilyje, ne Lietuvoje, o Latvijoje! Bet Rahovo buvau nusipirkęs sudedamą dviratį, numyniau iki greitkelio vedančio į Lietuvą, susistabdžiau sunkvežimį ir buvau parvežtas iki Karmėlavos. Kur sėdau ant savo sudedamo ir sėkmingai grįžau į Kauną, Kalniečių gatvę. Virtau nuo dviračio tiesiai į lovą.

Didelis AČIŪ Vytui LY2PU už nuotraukas ir "spragų užpildymus".

Kastytis LY2AA(ex UP2PAA) and Vytas LY2PU (ex UP2PU) with their families

2011-01-14T04:13:00.001-08:00

LY3RQ with "snake"

2011-01-13T01:31:00.000-08:00

UB5UG 435MHz "snake"

2011-01-04T06:33:00.000-08:00

UB5UG snake antenna

2010-12-30T01:45:00.000-08:00

N.B.
1. Antena has horizontal polarization!
2. Antena is scalable for other bands too.
3. You can add more bars to get additional gain - 1.1 dB per pair:
5 bars (standart) 6.2 dBd
7 bars 7.42 dBd
9 bars 8.45 dbd

SWR remains within acceptable range (<1.6 within 70cm band).

435 MHz antenna for AO51

2010-12-28T04:26:00.000-08:00

AO 51 435MHz antenna by DL7KM

2010-12-28T01:18:00.000-08:00

DL7KM 435 Mhz antenna for AO51

2010-12-27T22:58:00.001-08:00

Miscellaneus

2010-11-03T00:00:00.000-07:00

The microscope

2010-10-28T00:37:00.000-07:00

SFH 203 A

2010-10-26T07:07:00.001-07:00

2010-10-26T07:05:00.000-07:00

432MHz plumbers party

2010-10-24T01:36:00.000-07:00

YL1042 PA with filter

400 THz, 144,150 modulator

2010-10-21T22:57:00.000-07:00

Laser ray could be obtained from 25 meters, it is switched on a squelch in the receiver to hear its own noise. In 120-160 meters laser ray with lens close receivers noise. 144,15 MHz modulator should be located in the metal housing. Moduliatorius buvo isbandytas sutemus Saules gatveje, pasvietus lazeriu i tamsu kiema, mazdaug uz 160 metru. Alinko RX triuksmus lazerio spindulys linzes pagalba , uzdare 59...Salia lazerio spindulio buvo pastebeti paslaptingi traskesiai, kuriuos bandant pagauti buvo bandyta ijungti ketvircio bangos antenos laida, kuris nukrito tamsoje i ruda zole...ir ten liko nesurastas visam laikui. Paslaptigus triuksmus teks gaudyt kita karta. Is sio bandymao....vieni nuostoliai , pamesta antena, iskrito trintukas is balkono , kuris reme lazeri, patikslindamas jo justiruote, sukelt skandalo nepavyks, kai nieko nepadarai , pas mus tai madinga "priskandalinus" vis sioks toks darbas buna padarytas...

400THz with 14 MHz CW modulator

2010-10-18T21:18:00.000-07:00

14MHz modulator with laser should be brought in 10 meter from receiver. Telegraph signal without lens is clear for zooming the lens used.

Moxon hand held 145 MHz antenna

2010-10-07T00:18:00.000-07:00

Moxon hand held type antenna made from 3mm wire with 3,9 dBd is mechanikaly stable, 30cm shorter than two element dual band antenna. It is posibile to connect it to radio via BNC. Antenna Moxon was described by Julian G4ILO

Hand held dualbander antenna

2010-10-03T23:49:00.000-07:00

RZ9CJ design, made by LY3LP..

Hand held 145 Mc dipol

2010-09-27T00:14:00.000-07:00

No problem QSO 50km

Luxeon star AM ATV transmitter

2010-09-21T22:31:00.000-07:00

Old good idea by Trewor Braun ,G8CJS, AM ATV video modulator, used to modulate luxeon star 5W LED...now used to modulate TV signal...This TV modulator is available for transferring "Ronja" digital information...

QRP 400 THz RX

2010-09-19T01:25:00.001-07:00

2010-09-19T01:24:00.001-07:00

400 THz plumbers party

2010-09-16T22:47:00.000-07:00

2010-09-16T22:45:00.000-07:00

Luxeon star with ghost.....

2010-09-12T23:56:00.000-07:00

QRZ

2010-09-09T01:06:00.000-07:00

Miscellaneus

2010-08-25T01:13:00.000-07:00

Experiment with Linear Generator

2010-08-04T06:31:00.000-07:00

Maglev linear generator plus CD wind turbine

2010-07-30T01:15:00.000-07:00

LY2SS

2010-07-28T04:13:00.000-07:00

"Two windturbines"

2010-07-27T05:03:00.000-07:00

Maglev ultra simple HAWT

2010-07-19T01:02:00.000-07:00

Magnetic levitation only 2 finger type neodym

Vertical axis , magnetic levitation CD wind turbine

2010-07-15T06:28:00.000-07:00

Vertical axis magnetic levitation CD wind turbine with 2 finger type neodym magnets.

Magnetic Levitation CD Wind Turbine

2010-07-09T01:03:00.000-07:00

Magic Hand

2010-07-08T02:46:00.000-07:00

The miscellany

2010-07-06T09:13:00.000-07:00

CD turbine

2010-06-19T05:01:00.000-07:00

CD wind propeller

2010-06-11T10:55:00.000-07:00

434,2 MHz TX

2010-05-14T07:56:00.000-07:00

Done from old power supply

2010-04-21T21:43:00.000-07:00

CW IAMBIC KEY

2010-04-15T02:01:00.000-07:00

Hex and source code is here

LM386+AN7205 simple 14Mhz receiver

2010-03-28T23:33:00.001-07:00

AN7205 14Mhz TRX

2010-03-24T23:05:00.000-07:00

Negative ions sparks meter

2010-03-12T09:11:00.000-08:00

Another ions wind vertical axis turbine

2010-03-08T01:09:00.001-08:00

Negative ions generator

2010-03-06T08:14:00.000-08:00

If negative ions wind generator moves candle fire, then it can move a turbine as well,please check "Klemens 73" in the you tube.

Parallel BS170 14,068 MHz TX

2010-02-26T08:22:00.000-08:00

3 stage BS170 14MHz TX

2010-02-23T02:16:00.001-08:00

BS 170 FET...two stage QRP 14,068 MHz TX

2010-02-21T08:23:00.001-08:00

14,068 Mhz bilateral transmitter

2010-02-19T05:42:00.000-08:00

Some MOSFET's BS170 requires a resistance from source to gate. It should be approx.3kOhm and needed to be individually selected. Coils on ring T37-6 are tuned for resonance , then TX signal is clear.Output power is abt 50mW ,if my power meter shows correctly. It easily lights LED , telegraphing tone also is clear.

...warming-up guaranteed....

2010-02-15T07:48:00.000-08:00

I have the experience to build an antenna in snow and I know that hot coffee cup is equally important as the antenna mast. I went to the nearest store and did not get the required alcohol,so I bought the kerosene and Grant's Scotch whiskey. I remembered the good old oil lamps principle,and made a stove. It should be three-wick, the faster heats the water, wicks should be made of natural linen, or wool.Grant's in case the lack of fuel, the best Grant's pour not into a lamp...warming-up guaranteed...

"Gasoline" lamp

2010-02-14T04:20:00.000-08:00

L antenna

2010-02-09T07:14:00.000-08:00

28 Mhz bileteral TX with BS 170 transistor

2010-02-01T22:53:00.001-08:00

Bilateral 18.090 Mhz TX

2010-01-31T01:21:00.000-08:00

Bilateral 14,096 Mhz TX

2010-01-29T00:27:00.000-08:00

G3ESP ideas...a wide range VXO...

The milliwattmeter

2010-01-26T02:21:00.000-08:00

BS170 simple 14 Mhz CW TX

2010-01-21T02:18:00.000-08:00

16m "tower" for QRP

2010-01-12T10:48:00.000-08:00