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HB9ABX > ANTENNEN 10.08.13 15:11l 35 Lines 1203 Bytes #999 (0) @ WW
BID : A8NDB0FHN0SX
Read: HB9ABX GUEST DK3UZ DL8BO DD3IA DK4PL DG6DR DL9NDQ DK4OK DF7ML DK3HG
Subj: new update infos
Path: DB0FHN
Sent: 130810/1311z @:DB0FHN.#BAY.DEU.EU [JN59NK Nuernberg] obcm1.07b12
From: HB9ABX @ DB0FHN.#BAY.DEU.EU (Felix)
To: ANTENNEN @ WW
Reply-To: HB9ABX @ HB9EAS.CHE.EU
X-Info: No login password
The new update is available!
The following subjects are covered by this update:
- Multiband-Antenna 8-Band, 10-80m 2nd Generation
- Fieldstrength measuring instrument for comparisons
When making own modifications and own versions, you
have the see the result of it.
For that purpose, field strength is measured before and
after modification, then you see the difference.
Commercial field strength instruments are expensive,
therefore we have here a homebrew unit, which
measures precisely, with an accuracy of 0.5 dB.
- Better product sources
- of motor for RFA
- of ferrite toroids
- General updates
- PVC sheet (bendable): alternative source
- Polyuretane foam: alternative source
- alternative RFA
- Proof of efficiency of Roomcap
Based on measurements, the high efficiency of the antenna
is verified. No other antenna, using the same radiator length,
ever could reach such a high radiation efficiency.
Best 73s Felix HB9ABX
/ex
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