Return to KLUBNL.PL main page
| To: | <[email protected]> |
|---|---|
| Subject: | LF: Re: antenna calculation..help needed |
| From: | "Alan Melia" <[email protected]> |
| Date: | Thu, 14 Sep 2006 00:46:22 +0100 |
| Delivered-to: | [email protected] |
| Domainkey-signature: | a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btinternet.com; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=X97E1K7dP2TvsZZ1S2/C9AvUdQJr+mrzaIxixHZ9/MBeFWqvZucr1HbVq7PecK3ntF6+vcckyalR0VAbmO5G0WpiZeusT76Ye85dTwqgjJngpp1ct0LC8L1mXFSuyhCerjW9fAHxKjZLyi96zF2b+H8ndOZ0oW8LdpEaydHFQ/c= ; |
| Domainkey-status: | bad (test mode) |
| References: | <000801c6d757$0c6af2e0$60be3b3e@fujitsu> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Dick, You could use a quarter wave length of 75 ohm coax in series from the base, as a matching transformer....allowing for velocity factor of course Cheers de Alan G3NYK ----- Original Message ----- From: Dick <[email protected]> To: <[email protected]> Sent: 13 September 2006 18:06 Subject: LF: antenna calculation..help needed Hello all, It's off topic, but as I can't find it on the net I'll ask it here. I want to modify an old 27MHz CB antenna to an quarter wave vertical for 30m (10.14MHz) Diameter is tapering from 26 to 15mm. Question: what length should it have? I suppose 0.25 wavelength x 0.96 or so... Sofar not a big problem, but as I will use 36 radials direct on the ground, it's radiation resitance will be around 36Ohm. To match this to 50Ohm I can use a series capacitor, but what value this should be?? Who can tell me? 73 Dick, pa4vhf |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | LF: Re: the use of long radials, Alan Melia |
|---|---|
| Next by Date: | LF: Re: Re: antenna calculation..help needed, captbrian |
| Previous by Thread: | LF: Re: Re: antenna calculation..help needed, captbrian |
| Next by Thread: | LF: LX/PA6Z has own 136kHz directory, Dick |
| Indexes: | [Date] [Thread] [Top] [All Lists] |