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Search Results
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Thread: Harbros radio
Post: Harbros radio
| Greetings,
I have accumulated several Hardinge Bros (Harbros) HF AM radios. These were Australian made in both Horsham and later Healesville both in VK3.
A large number of these valve radios we... |
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VK4BVI |
Wanted
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0 |
259 |
18-08-2024, 01:13 PM |
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Thread: Did you get one of these emails ?
Post: RE: Did you get one of these emails ?
| Doug
Things must be desperate in the world of scammers. Now the WIA is a target.
Not sure what they would find. Maybe a bandplan or repeater list.
I don't think the WIA stores credit card... |
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VK4BVI |
General Discussion
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1 |
1,698 |
28-01-2021, 10:36 AM |
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Thread: Weather radar image Bris 7Oct19
Post: RE: Weather radar image Bris 7Oct19
| Doug
Based on the BoM forecast for yesterday ' little if any rain'. This could be a phenomenon known as 'Virga". It is raining at altitude, but evaporates before reaching the ground.
Ron
VK4... |
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VK4BVI |
General Discussion
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1 |
1,889 |
08-10-2019, 02:13 PM |
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Thread: NBN and phone only...what did the provider install?
Post: RE: NBN and phone only...what did the provider ins...
| Nev
As per my earlier post, Telstra installed a G Fast box, plumbed into the existing phoneline.
This has ethernet ports and wifi connectivity, even though this particular install is only for a ... |
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VK4BVI |
General Discussion
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17 |
3,204 |
25-05-2019, 02:39 PM |
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Thread: Small Ships Radio information
Post: Small Ships Radio information
| I have a radio manufactured by Small Ships Radio Service Melbourne, and hoping someone can provide some information.
The model is KB 4. There are no other markings, and it did not have a case.
... |
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VK4BVI |
Wanted
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2 |
2,300 |
23-05-2019, 08:27 PM |
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Thread: NBN and phone only...what did the provider install?
Post: RE: NBN and phone only...what did the provider ins...
| To follow up on the reply from Damien.
I will have a definitive answer over the weekend if you are with Telstra. Previously my mother had a phone only FTTN service with Southern Phone. They suppl... |
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VK4BVI |
General Discussion
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17 |
3,204 |
23-05-2019, 08:17 PM |
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Thread: It's over. Amateur Radio Magazine scanning project.
Post: RE: It's over. . Amateur Radio Magazine scanning p...
| I have been following this project for a number of years, and it has been a trip down memory lane with post 1977 issues.
This resource now saves me from going through boxes of magazines hoping to ... |
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VK4BVI |
General Discussion
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10 |
1,873 |
16-05-2019, 04:19 PM |
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Thread: Amplifier for 6 meters
Post: RE: Amplifier for 6 meters
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VK5KAF Wrote: (20-02-2019, 01:29 PM)
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wonder how the amp building went i am very interested
cheers John
VK5KAF
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Well the amp is finished, complete with case, but I haven't had much time to... |
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VK4BVI |
50MHz
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10 |
4,823 |
20-02-2019, 02:27 PM |
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Thread: Yaesu MD100A8X microphone
Post: RE: Yaesu MD100A8X microphone
| This is now back on the air.
Yaesu America had 1 in stock, took nearly 2 weeks to arrive in the letterbox.
Once I worked out how to get the microphone apart, it only took 2 minutes with the sold... |
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VK4BVI |
Transceivers, Transmitters & Receivers
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3 |
2,268 |
16-02-2019, 09:59 AM |
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Thread: Icom IC-901A Bits
Post: Icom IC-901A Bits
| Just restored my old IC-901 2m/70cm FM box and it works like a new one.
I am chasing some minor bits to finish the job.
Parts I am particularly interested in are the row of push button switches ... |
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VK4BVI |
Wanted
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0 |
1,932 |
21-01-2019, 07:25 PM |
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Thread: Yaesu MD100A8X microphone
Post: RE: Yaesu MD100A8X microphone
|
Doug
Did have a look at the site in your reply, good information there.
All wiring intact all the way from the connector to the element. Even when measuring the impedance at the connections o... |
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VK4BVI |
Transceivers, Transmitters & Receivers
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3 |
2,268 |
10-01-2019, 06:10 PM |
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Thread: Yaesu MD100A8X microphone
Post: Yaesu MD100A8X microphone
| I have a Yaesu MD100 desk microphone which has gone to pot. :(
Measuring the impedance of the insert I come up with 1.050M Ohm. According to my manual it should be about 500 ohm. Probably explai... |
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VK4BVI |
Transceivers, Transmitters & Receivers
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3 |
2,268 |
10-01-2019, 03:34 PM |
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Thread: Yaesu FT-857D display
Post: Yaesu FT-857D display
| Greetings
There has been much discussion in the Hamdon about the display in the FT-857D, and the 'zebra line effect'.
Some have claimed to have a fix, with reasonable/mediocre results. the on... |
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VK4BVI |
Transceivers, Transmitters & Receivers
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0 |
1,746 |
27-12-2018, 04:32 PM |
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Thread: AHRDF Christmas opening hours 2018
Post: RE: AHRDF Christmas opening hours 2018
| Merry Christmas to you Doug and thankyou for the forum.
All the best for 2019.
73
Ron
VK4BVI |
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VK4BVI |
General Discussion
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5 |
1,385 |
24-12-2018, 06:30 AM |
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Thread: Amplifier for 6 meters
Post: RE: Amplifier for 6 meters
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VK6ZFG Wrote: (14-12-2018, 09:41 AM)
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VK4BVI Wrote: (13-12-2018, 04:09 PM)
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VK6ZFG Wrote: (02-12-2018, 08:47 AM)
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Hi Ron
The MRF492 is rated for a maximum output of 70W. It loses linearit... |
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VK4BVI |
50MHz
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10 |
4,823 |
15-12-2018, 10:13 AM |
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Thread: Amplifier for 6 meters
Post: RE: Amplifier for 6 meters
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VK6ZFG Wrote: (02-12-2018, 08:47 AM)
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Hi Ron
The MRF492 is rated for a maximum output of 70W. It loses linearity if used above this power level.
I have modified DSE K6349 100W PAs that use t... |
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VK4BVI |
50MHz
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10 |
4,823 |
13-12-2018, 04:09 PM |
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Thread: Icom IC-756 screen replacement
Post: RE: Icom IC-756 screen replacement
| I had almost forgotten that I started this thread.
So here is the update in a nutshell.
Radio is back in the shack and working like a new one!
Had the chip replaced by a company in Bowen Hill... |
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VK4BVI |
Transceivers, Transmitters & Receivers
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8 |
7,364 |
11-11-2018, 01:03 PM |
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Thread: Amplifier for 6 meters
Post: RE: Amplifier for 6 meters
| Doug
I still work for a living :rolleyes: , work gets in the way of my amateur radio life.
The junk box is coming up trumps for the various bits, so maybe it will.......not be ready for the fiel... |
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VK4BVI |
50MHz
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10 |
4,823 |
08-08-2018, 04:10 PM |
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Thread: Amplifier for 6 meters
Post: RE: Amplifier for 6 meters
| Doug
Thanks for the feedback.
I am using my trusty TS-680S (10 - 12 W. output) as the driver for the proposed amplifier.
Having a trawl through the internet, I came across this article from D... |
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VK4BVI |
50MHz
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10 |
4,823 |
08-08-2018, 03:33 PM |
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Thread: Amplifier for 6 meters
Post: Amplifier for 6 meters
| Just out in the shed rummaging through some bits 'n pieces, and came across an old commercial VHF amplifier, almost intact.
The thing that caught my eye was an MRF492, which is the final output dev... |
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VK4BVI |
50MHz
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10 |
4,823 |
08-08-2018, 11:55 AM |
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Thread: AHRDF Forum - where do we go from here ?
Post: RE: AHRDF Forum - where do we go from here ?
| +1.
I'm not on the social media bandwagon. It tends to get rather anti-social at times.
There is a wealth of information contained in the Forum pages that members can access readily, instead of... |
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VK4BVI |
General Discussion
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25 |
4,399 |
05-08-2018, 07:59 PM |
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Thread: Radio Australia frequencies lost to China
Post: RE: Radio Australia frequencies lost to China
| It is very disappointing to see decisions made by people who do not understand technology (read pen pushers).
These same people are the ones who think the only form of communication is via a mobile p... |
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VK4BVI |
General Discussion
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7 |
2,160 |
23-06-2018, 12:11 PM |
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Thread: FT817nd xtal osc pins...which are output?
Post: RE: FT817nd xtal osc pins...which are output?
| Nev
Is this helpful? http://www.ka7oei.com/ref_unit.gif
Looks like the output is on pin 2, if I am looking at it correctly.
Cheers
Ron |
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VK4BVI |
Transceivers, Transmitters & Receivers
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5 |
1,935 |
04-03-2018, 03:44 PM |
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Thread: Icom IC-756 screen replacement
Post: RE: Icom IC-756 screen replacement
| Hello all
Well the screen replacement went....ok.
While reassembling the unit I have had an 'oh sh!t' moment. It appears I have taken out the CMOS graphic controller chip. :@
The screen hha... |
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VK4BVI |
Transceivers, Transmitters & Receivers
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8 |
7,364 |
16-07-2017, 10:42 AM |
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Thread: FORUM CHANGE
Post: RE: FORUM CHANGE
| I like it. Crisp and clear. Much easier to read.
VK4BVI |
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VK4BVI |
SYSTEM NOTICES
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44 |
13,889 |
09-06-2017, 08:18 PM |
