The antenna Tom has is apparently based on the same design philosophy
but instead of parasitic elements the number of phased driven elements HG>are increased.

Exactically. And most references refer to it as an LPDA design
The Twin Booms are a modification of the basic design to assist
impedence matching. The cross over wiring is used but mostly in TV
antennas. But it still is an LPDA antenna
---
■ SLMR 2.1a ■ Typo Tom Strkes Again
* Origin: Fidonet Since 1991 bbs.docsnetservices.com (1:123/140)

-snip-

I cannot come up with any pictures on the interent of a Yagi
that loks like my Picture ! in my previous posts.
YES a multipuls band Yagi will have different director lengths
but they are the same length for each band and do not follow
the full tapering lengths of the LPDA

Tom,

I use Firefox and have the History set just so I can go back to look
at something that comes to my mind to read it again.

As long as the address of the page hasn't been changed by a webmaster EV>just my clicking the History option on the Menu Bar and clicking
the selection for All History, then typing a word or three in the
Search box usually narrows down to show me the page I was looking for.

Making Bookmarks helps too. <GRIN>

I have an extensive bookmark folder in my Firefox. but have all history
erased upon shutdown.
I like each session to be a New Adventure. Sometihng that coems easy
nowdays for me.
---
■ SLMR 2.1a ■ 0
* Origin: Fidonet Since 1991 bbs.docsnetservices.com (1:123/140)

In a message dated 06-05-14, Roy Witt said to Holger Granholm:

GM Roy,

The antenna Tom has is apparently based on the same design philosophy
but instead of parasitic elements the number of phased driven
elements are increased.

Meanwhile, it isn't even in a class that could be called a LPDA.

No, that's why it is called LPYA (Log Periodic Yagi Array) often with "bandpass" added to that.

CU L8ER,

Holger

---
■ MR/2 2.30 ■ A friend: someone who likes you even after they know you.
* Origin: Coming to you from the Sunny Aland Islands. (2:20/228)

The antenna Tom has is apparently based on the same design philosophy

The Twin Booms are a modification of the basic design to assist HG>TW>impedence matching. The cross over wiring is used but mostly in TV HG>TW>antennas. But it still is an LPDA antenna

Correction, the dual boom design is the basic one.

For Transmitting Antennas YES becaue it provides a better feed line
match.

BUT for recieve only antennas the single boom is used by some

And when I tried to interject some ham Termonology I was told by
Roy that we were talking aobut TV antennas.
---
■ SLMR 2.1a ■ Typo Tom strikes agaoin
* Origin: Fidonet Since 1991 bbs.docsnetservices.com (1:123/140)

Greetings Holger!

The antenna Tom has is apparently based on the same design
philosophy but instead of parasitic elements the number of phased
driven elements are increased.

Meanwhile, it isn't even in a class that could be called a LPDA.

No, that's why it is called LPYA (Log Periodic Yagi Array) often with "bandpass" added to that.

Translated: Yes, that is why the KLM (Log Periodic Yagi Array) often has 'bandpass' added to its description.


Have a day!

R\%/itt - K5RXT

--- GoldED+/W32 1.1.5-31012
--- D'Bridge 3.99
* Origin: HAM Radio, aka Amateur Radio. 804? Over! (1:387/22)

Greetings TOM!

The antenna Tom has is apparently based on the same design
philosophy

The Twin Booms are a modification of the basic design to assist
impedence matching. The cross over wiring is used but mostly in
TV antennas. But it still is an LPDA antenna

Correction, the dual boom design is the basic one.

For Transmitting Antennas YES becaue it provides a better feed line
match.

Show me an antenna, RX or TX, that doesn't need feed line matching.

BUT for recieve only antennas the single boom is used by some

Yes, I have one of those. It isn't a LPDA, as it more closely resembles
the KLM LP Yagi...it too has the 'cross-over' matching device on it, but
each element is insulated from the boom. i.e. a yagi

And when I tried to interject some ham Termonology I was told by
Roy that we were talking aobut TV antennas.

You were mixing yourself up by talking one, then the other. If you want an antenna that can receive locally transmitted high-power signals, no
biggie, just throw up a long wire and be done with it.

If you want to reach out and get reception from long distant TV
broadcasts, you'll need an antenna designed for that.


Have a day!

R\%/itt - K5RXT

--- GoldED+/W32 1.1.5-31012
--- D'Bridge 3.99
* Origin: HAM Radio, aka Amateur Radio. 804? Over! (1:387/22)

In a message dated 06-07-14, Tom Walker said to Holger Granholm:

Hi Tom,

Correction, the dual boom design is the basic one.

For Transmitting Antennas YES becaue it provides a better feed line TW>match.

Feed line matching is also beneficial for receiving antennas.

And when I tried to interject some ham Termonology I was told by
Roy that we were talking aobut TV antennas.

Me too !!!

CU AGN, Sam, OH0NC

aka Holger

___
* MR/2 2.30 * This OS/2 system uptime is 625 days 17:47 hours (en).

--- PCBoard (R) v15.22 (OS/2) 2
* Origin: Coming to you from the Sunny Aland Islands. (2:20/228)

The antenna Tom has is apparently based on the same design
philosophy

The Twin Booms are a modification of the basic design to assist HG>TW>> impedence matching. The cross over wiring is used but mostly in HG>TW>> TV antennas. But it still is an LPDA antenna

Correction, the dual boom design is the basic one.

For Transmitting Antennas YES becaue it provides a better feed line match.

Show me an antenna, RX or TX, that doesn't need feed line matching.

A longwire thrown out the windoww rr conected to a tree.

You were mixing yourself up by talking one, then the other. If you want an RW>antenna that can receive locally transmitted high-power signals, no RW>biggie, just throw up a long wire and be done with it.

I already know that and a great deal more about radio theory then you
think

---
■ SLMR 2.1a ■ Typo Tom strikes agaoin
* Origin: Fidonet Since 1991 bbs.docsnetservices.com (1:123/140)

Correction, the dual boom design is the basic one.

For Transmitting Antennas YES becaue it provides a better feed line HG>TW>match.

Feed line matching is also beneficial for receiving antennas.

Of course but is far less critical. Hense a length of wire tied to a
tree outside a window can provice some very nice Short Wave listening.

---
■ SLMR 2.1a ■ Typo Tom Strkes Again
* Origin: Fidonet Since 1991 bbs.docsnetservices.com (1:123/140)