Booster Cylinder Dipole Wingspan 55 cm - 22"

In the UBA DX CW contest I used the Indoor Booster Cylinder Dipole and my End fed antenna. 
I used the Booster Cylinder Dipole exclusively on 21 MHz.
I used the End-fed on 14 MHz, 7MHz and 3.5 MHz.

Booster Cylinder Dipole
On 21 MHz I compared the Booster with the End fed. Strong signals on the End fed could be worked easily with the Booster Cylinder Dipole. Also with a lower power than 3 or 4 Watt. Hi.
On 14 MHz  I had to use "Full Power" to make the QSO's.
I used Search & Pounce for all QSO's that I made with the Booster.
This gives the opportunity to lower the power, when the received signal is strong.

End Fed on lower bands
 

 As a Low Power enthusiast I often use Search an Pounce (S&P). When the signals are strong I use S&P, instead of calling CQ with  the maximum power of my QRP set.
Before I answer a CQ, I can adjust my power, using the S-meter reading. The stronger the signal, the lower the power can be. Propagation works both ways.

PA1B Constuction of the Booster

In the EU DX contest I used the Booster Cylinder Dipole. 
I used the Booster on 15 meters  and on 20 metres . These bands are not always open, but I seized the oppurtunity. Hi.

Bands and Power
The power of the set is 3 W on 21 MHz and 4 W on 14 MHz.
All QSO's are made with search and pounce. S&P. I did not call CQ myself.

QSB
There was some QSB. QSB can be a real showstopper, when working with QRP.
If I am lucky, it is best to start, when the signal strenght goes up.
Then the station will hear my call, before the signal peaks. And the QSO can be completed, before my signal fades again. Hi.

32 QSO's with 17 DXCC's
I am very pleased with the results.
I started on 15 m and after 3 QSO's I went to 20 m, to make 15 QSO's.
Then I went back to 15 m, to make another 12 QSO's.
After that I went to 28 MHz and to my surprise, I could make a QSO with just 800 mW, this time on the Monster Cylinder Dipole. 
In 3 QSO's the signal was so strong, that I reduced my power to QRPp and could make two 1000 Miles per watt QSO's.

Booster - Cylinder dipole

The HA DX contest is a contest with much activity. So I decided to work with my indoor Booster Cylinder Dipole. As a low power enthusiast I always work with QRP or QRPp (less than 1 W) when possible. The stonger the received signal, the lower the power can be. The Booster hangs in the Dormer Window.

The table shows the 17 QSO's that I made on 21 MHz.
21 MHz worked more easily than the other bands. Hi.
Further only one QSO on 14 MHz was made.

PA1B in HA DX 2024 with QRP on 21 MHz Booster Cylinder Dipole - Wingspan 55 cm

Booster
The Booster is a cylinder dipole. The two cylinders, are each made from 6 Energy Booster cans from aluminium, that are cut open and bolted together.
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The Booster in the dormer window (dakkapel) PA1B

Taps on the coil. One turn apart. PA1B

In the PACC 2016 I used a new cylinder dipole, that I had build shortly before. I built the Booster to experiment with larger cylinders and a larger coil. To work on 7 MHz and 14 MHz.

Booster in the PACC  2016