[OZAPRS] 10.147 MHz antenna

[Graeme]

That certainly worked well!  I’ll be happy if I can get half that reception on 40m using a Diamond HF40FXW.

Graeme 2HFG

From: Tim Ahpee 
Sent: Monday, December 11, 2017 8:55 AM
To: Australian APRS Users 
Subject: Re: [OZAPRS] 10.147 MHz antenna

Hi Andrew, 

I’ve got the Diamond HF30FX bolted to the bullbar of my Prado. It’s sitting atop a GME spring loaded mount so that I don’t destroy it when going over corrugations. Icom IC-7000 @100W. Works a treat. Here’s part of our Central Australia trip in August. 

https://aprs.fi/#!ts=1501804800&te=1502582400&call=a%2FVK3EF-9

There’s a little bit of VHF mixed in as well.

Tim Ahpee
VK3EF



  On 10 Dec 2017, at 6:04 pm, Andrew Rich <vk4tec at tech-software.net> wrote:

  I am now considering making a vhf 4G hybrid instead 

  Sent from my iPhone


    On 10 Dec 2017, at 4:59 pm, Andrew Rich <vk4tec at tech-software.net> wrote:

    So I drove around all afternoon and heard nothing on 10.147.600 MHz 

    Sent from my iPhone


      On 10 Dec 2017, at 4:47 pm, Glen English VK1XX <glenlist at pacificmedia.com.au> wrote:

      Hi Peter

      Good numbers !

      was the feedpoint short-open-load compensated, or is this measured down some coax, if so , how long approx ?



        On 10/12/2017 4:05 PM, Peter Dodd wrote:
        Hi Andrew,
        1.34:1 at 10.147 MHz
        R= 57 Ohms
        X=13.7 Ohms
        Dip in X is a bit higher in frequency but can't shorten antenna without cutting.
        A bit more work on earthing connections required
        Peter

        ----- Original Message -----
        *From:* Andrew Rich <mailto:vk4tec at tech-software.net>
        *To:* Australian APRS Users <mailto:ozaprs at aprs.net.au>
        *Sent:* Saturday, December 09, 2017 9:49 AM
        *Subject:* Re: [OZAPRS] 10.147 MHz antenna

        Is your antenna grounded

        Have you done vswr sweeps

        Sent from my iPhone

        On 9 Dec 2017, at 8:21 am, Peter Dodd <dodd.pc at bigpond.com
        <mailto:dodd.pc at bigpond.com>> wrote:


          Hi,
          Diamond HF30FX mounted on Rhino Rack on canopy of my DMax.
          With 30W tx heard by VK2ZZM and and VK2OL-5 this morning at about
          900 km
          Ignore mycall report that is my rx and multipsk software.
          $65000 and counting for mobile antenna mount
          Regards
          Peter VK7KPC-15

               ----- Original Message -----
               *From:* vk4tec at tech-software.net
               <mailto:vk4tec at tech-software.net>
               *To:* 'Australian APRS Users' <mailto:ozaprs at aprs.net.au>
               *Sent:* Friday, December 08, 2017 8:36 PM
               *Subject:* [OZAPRS] 10.147 MHz antenna

               Hello

               I can go up but not out

               Looking for suggestion for HF vertical for 10 MHz please

               Andrew

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