MenuMaker produced RA3WDK
 AU 144
MHz
 ES 144
MHz
 MUF today
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Доработка усилителя KL203
Широкополосная активная рамочная магнитная антенна
Эскиз 5-Band Yagi 2el 14 MHz, 2el 18MHz, 2el 21 MHz, 2el 24 MHz, 3el 28 MHz
Предусилитель 144 МГц SPF5189z + BPF, защита от статики и мощности по выходу
Логопериодик 250MHz-7000MHz с удлинением элементов индуктивностями
 
LNA
5760 NE3210
Два CW фильтра в TS-570
Генератор шума в разъеме
Предусилитель-коммутатор для двух ортогональных флагов
Yagi 5 Band + Load Coil Dipole 30m
МШУ с резонатором (MGF1303)
 
Простой тестер ламп 6146B / S2001A
МШУ 144 MHz SPF5189z
Цифровой магнитофон для трансивера + переключатель Mic-Digital
2-way PTT СЕКВЕНСОР
 
МШУ 5,6-5,8 GHz ( EPB018A5 )
МШУ
1296 MHz , ATF54143, 50 mA Nf ~0,55db
USB
СВЧ измеритель мощности до 12 ГГц
Measure power from
10 MHz to 12 GHz !
Второй CW фильтр по 1 ПЧ в TS-830
 
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The
Lightning Protection for Rotors
If you
want to buy assembled and tested board please look at
K6VHF`s info here
Download
description of LPR
New
Magic QRP SWR Bridge v.3
If you
want to buy KIT of Magic Bridge or assembled and tested
board please look at K6VHF`s
info here
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If you want
to use your old HF tranceiver in VHF in EME or MS QSO -
you must increase stability of frequency. For example -
i use my old IC745 with my 144/28
XVTR . I have good total value of frequency stability
for long sending cycle without TXCO. You need only some
a bit of polypropylene for VCO, 2nd LO and LO.
In old tranceivers
often was problem with switchknobs XIT/RIT.
Good idea
is - to use old switchknobs XIT/RIT for control of good
relay. Now only clear of relay ladder with good contact
will be control XIT/RIT . For example - i use russian relay
RES-49 in easy layout !
Repairing old potentiometers
The
change of original components when restoring old radio
or transceiver sets is always an unpleasant. In the case
of potentiometers it is difficult to find double original
potentiometers for RF/AF or Mic/RF PWR.
If
you hear rustling in old potentiometers of your old transceivers
you need repair them with oil. My practice is to use syringe
with solid oil + spirit. Usually I use russian solid oil
ÖÈÀÒÈÌ-203 (ÃÎÑÒ8773-73)
. You can use SIMNIA 0, PETROLEUM JELLY S68OO,Mobiltemp
SHC 100, AEROSHELL 15A or or good quality machine oil.
You
don`t must to open potentiometers, you must only press
out some oil with spirit into potentiometers. You must
to turn the potentiometer minimum 20 times from end to
end. The solid oil hits to center contact and will protect
contact near axis.
This technique is very
effective and, usually, these potentiometers will still
perfectly efficient. But i know what in 5% of cases where
the resistive surface has been damaged and way with repair
potentiometer by oil does`t work. More
info you can look here....
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Smart
Automatic
Antenna Tuner for portable QRV
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Magic
QRP SWR Bridge
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2 гетеродин и пьезофильтр в VEF-202
After
modification ...
 Air
40m band Air
17m band
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QRP
CW Transceiver
+ Modification + CW
filter
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USB
Power Meter
Measure
power from 10 MHz to 12 GHz !
HAMs
who owns this Power Meter :
RW3AZ,
RZ4HD, UA3DHC, R6DZ, RA9YMI, UZ5DU, US3IET, RA9FOR, RT5D,
RA0LDP, RT8B
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This bug want to help us in Field Day
Just
see more about.....
  
Ионограмма
foE, foF1 и foF2 - критические частоты ионизированных слоев E, F1, F2 для обыкновенного компонента волны
fxE, fxF1 и fxF2 - критические частоты ионизированных слоев E, F1, F2 для необыкновенного (eXtraordinary) компонента волны
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VHF
: UHF : SHF Cluster __
Дипломы
DX
QSL пришли...
Zone #3 WAZ on 80m !
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