Simple 50,1 MHz converter with LA1185

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

50,06- 50,120 MHz TX

The 50MHz RX "MINIMALIST"

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

50,06 - 50,120 MHz RX

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

Simple FET AM 50 MHz TX

50 MHz RX

Mixer KE3IJ idea

Ultra simple 50 MHz converter

6m vertical rectangle

Also known as UB5UG's rectangle
and Skydoor by JA1HWO.
I chose UB5UG's variant because it's more convenient - no need for matching/balun unit and no need to split lower bar.
I tried to connect and disconnect cable's braid at the center of lower bar - it doesn't affect SWR. Therefore I'll leave it connected as UB5UG suggested for desymmetring purposes.
Computer modeling (mmana) clearly showed that:
1. horizontal bars must be significantly thicker than vertical ones, otherwise
performance is suffering noticeably. (first I thought to make them from plastic or bamboo but after computer modeling I abandoned this idea)
2. using isolator in vertical wire is not necessary.
Its gain is about 3dBd in free space. When mounted on 2.5 meters high (middle of my 5m fishing pole) it has 9dBi and 20 degree take-off angle.

Update - can't figure out why 4nec2 shows 7.78 dBi vs 9.4 dbi in mmana :(
at the same heights and same ground parameters...

Anyway, in reality antenna shows low SWR.
Must wait for propagation and test it in real QSO not in PC hihi

73 Zilvis, LY2SS

50 MHz low power TRX

Glass six box

Simple 50MHz receiver

G3XBM and N1TEV ideas.

50 MHz mini beacon

50 Mc QRP /p TX

XTAL 16,3944 Mc = 50,8032 Mc

2,4 GHz

50 MHz converter (IF 14MHz)

LY2SS , 3el J pole beam for 6 m

MC 3362 + LM386 NBFM 50Mc RX

50 MHz converter (IF 28 Mc)