[OZAPRS] 10.147 MHz antenna

[Tim Ahpee]

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 <https://aprs.fi/#!ts=1501804800&te=1502582400&call=a/VK3EF-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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