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21st Jun 2021, 2:15 pm | #1 |
Banned
Join Date: Feb 2017
Location: Bedfordshire, UK.
Posts: 601
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Build a Yagi Antenna
http://radio.meteor.free.fr/us/antenna.html
Cam across this the other day and found very helpul as a start into the subject for a possible personal build and have some fun with. |
22nd Jun 2021, 1:51 pm | #2 |
Nonode
Join Date: Apr 2012
Location: Worcestershire, UK.
Posts: 2,052
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Re: Build a Yagi Antenna
Here's a previous post of mine that might also be of interest:
https://www.vintage-radio.net/forum/...0&postcount=11 Best wishes Guy
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"What a depressingly stupid machine." [Marvin: HHGTTG] |
22nd Jun 2021, 2:19 pm | #3 |
Banned
Join Date: Feb 2017
Location: Bedfordshire, UK.
Posts: 601
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Re: Build a Yagi Antenna
Many thanks Guy-yes indeed and thanks for the PDF nice works well done, bit of an Aerial fan and dare I admit to a soft spot for spotting too. But I find them and the builds plus the sciences etc that go with them fascinating. Its what Radios all about in this area of the Genre
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22nd Jun 2021, 9:04 pm | #4 |
Nonode
Join Date: Apr 2012
Location: Worcestershire, UK.
Posts: 2,052
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Re: Build a Yagi Antenna
I did a fair bit of experimenting myself in the mid-late '70s - adding extra directors to an Antiference 4-element 'standard' product (not much improvement) - ending up with 2 x Fuba UKA8s stacked vertically with a tuneable masthead pre-amp, all rotatable by means of a 'Stolle' system. I acquired a copy of 'Antenna Engineering Handbook' by Henry Jasik which has a nice mix of practical and theoretical approaches - I've often wondered about having a play with computer-aided design but without access to some form of testing 'range' it's hard to verify the success (or otherwise) of one's efforts ... I knocked up a wooden gizmo for making folded dipoles - pic to follow Best wishes Guy
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"What a depressingly stupid machine." [Marvin: HHGTTG] Last edited by Nymrod121; 22nd Jun 2021 at 9:15 pm. Reason: added pics |
22nd Jun 2021, 9:23 pm | #5 |
Nonode
Join Date: Apr 2012
Location: Worcestershire, UK.
Posts: 2,052
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Re: Build a Yagi Antenna
A finished dipole + junction box - the balun was taken from a Maplin 300-75 ohm unit ... subjective testing indicated the latter to be quite lossy compared to that using the 'bifilar rod' type of balun i.e. the Hans Kolbe original.
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"What a depressingly stupid machine." [Marvin: HHGTTG] |
23rd Jun 2021, 2:36 pm | #6 |
Banned
Join Date: Feb 2017
Location: Bedfordshire, UK.
Posts: 601
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Re: Build a Yagi Antenna
Hey some great works there many thanks for the advices-Oh did do perform any Antenna analysis using hand meter or Software Device gizzmo like a nano etc?
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24th Jun 2021, 2:38 pm | #7 |
Nonode
Join Date: Apr 2012
Location: Worcestershire, UK.
Posts: 2,052
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Re: Build a Yagi Antenna
No, just comparison of signal meter levels / subjective 'before & after' audibility of known but distant stations.
Guy
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"What a depressingly stupid machine." [Marvin: HHGTTG] |