G8MNY TECH 21.08.19 04:30l 55 Lines 2175 Bytes #365 (0) @ WW
BID : 18345_GB7CIP
Subj: 70cm Collinear
Path: OK0NBR IR2UBX DB0RES ON0AR GB7CIP
Sent: 190821/0725Z @:GB7CIP.#32.GBR.EURO #:18345 [Caterham Surrey GBR]
From: G8MNY@GB7CIP.#32.GBR.EURO
To : TECH@WW

(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)
Stacked 5/8 Wave Co-linear For 430-440 MHz (Comment added Nov 05)

▒▒▒
Element- ▒▒▒
▒▒▒
──────── ┬┐┌ ─-Braid ┼┼ ───┐
▲ 7mm__██│ ▒▒▒ ▼
│ ▒▒▒▒ Element- ▒▒▒ Shirt Buttons
│ ▒▒▒▒ 5/8 wave ▒▒▒ ▲
│ ▒▒▒▒ ┼┼ ────┘
│ ▒UR▒ E ▒▒▒
241mm ▒▒▒▒ L Element- ▒▒▒
│ ▒43▒ E ▒▒▒
│ ▒▒▒▒ M ---162mm--- ┌┴┐ --"N" Socket
│ ▒▒▒▒ E ═════════════┤ ├═════════════
│ ___▒▒▒▒ N Ground Plane └─┘ Ground Plane
▼ 7mm │██ T
─────── ┘└┘

The Elements are made from UR43 or RG58\U (not RG58\CU) coax. You MUST use 50 ohm coax with a solid copper centre.

Use plastic or fibre glass as a tube cover for the elements but do not use grey tube as this could have a carbon conductive content.

There are four 5mm dia ground planes that must have a contact with the outer body of the "N" connector socket.

You can "Stack" as many elements as you wish within reason, trim 10mm off the last element then check V.S.W.R. Repeat until resonance is achieved. Place the tube cover over the elements w checking V.S.W.R. You should be able to reach a good resonance around 1 to 1.

Use the holes in the shirt buttons as an isolator between the element solder connections, the elements are connected inner/outer, outer/inner at each end of the element "Crisscrossing" to the next, once completed use some strong fishing nylon line around the last element to pull all the elements straight then fix the line over the top of the tube with a waterproof cap.

73 de Alan 2E1ESY @GB7NND.#23.GBR.EU ------------------------------------------------------------------------------

Here on HR1BY I tried this one, it works wonderfull, a repeater, i could not acces before, I now do it with even less power.
73 - WOLF, HR1BY @ HR1PAQ


Why Don't U send an interesting bul?

--- Mystic BBS v1.12 A43 (Linux/32)
* Origin: HAMRADIO telnet slacko.kozow.com (21:5/101)

G8MNY TECH 21.08.19 04:30l 55 Lines 2175 Bytes #365 (0) @ WW
BID : 18345_GB7CIP
Read: GUEST
Subj: 70cm Collinear
Path: OK0NBR IR2UBX DB0RES ON0AR GB7CIP
Sent: 190821/0725Z @:GB7CIP.#32.GBR.EURO #:18345 [Caterham Surrey GBR]
From: G8MNY@GB7CIP.#32.GBR.EURO
To : TECH@WW

(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)
Stacked 5/8 Wave Co-linear For 430-440 MHz (Comment added Nov 05)

▒▒▒
Element- ▒▒▒
▒▒▒
──────── ┬┐┌ ─-Braid ┼┼ ───┐
▲ 7mm__██│ ▒▒▒ ▼
│ ▒▒▒▒ Element- ▒▒▒ Shirt Buttons
│ ▒▒▒▒ 5/8 wave ▒▒▒ ▲
│ ▒▒▒▒ ┼┼ ────┘
│ ▒UR▒ E ▒▒▒
241mm ▒▒▒▒ L Element- ▒▒▒
│ ▒43▒ E ▒▒▒
│ ▒▒▒▒ M ---162mm--- ┌┴┐ --"N" Socket
│ ▒▒▒▒ E ═════════════┤ ├═════════════
│ ___▒▒▒▒ N Ground Plane └─┘ Ground Plane
▼ 7mm │██ T
─────── ┘└┘

The Elements are made from UR43 or RG58\U (not RG58\CU) coax. You MUST use 50 ohm coax with a solid copper centre.

Use plastic or fibre glass as a tube cover for the elements but do not use grey tube as this could have a carbon conductive content.

There are four 5mm dia ground planes that must have a contact with the outer body of the "N" connector socket.

You can "Stack" as many elements as you wish within reason, trim 10mm off the last element then check V.S.W.R. Repeat until resonance is achieved. Place the tube cover over the elements w checking V.S.W.R. You should be able to reach a good resonance around 1 to 1.

Use the holes in the shirt buttons as an isolator between the element solder connections, the elements are connected inner/outer, outer/inner at each end of the element "Crisscrossing" to the next, once completed use some strong fishing nylon line around the last element to pull all the elements straight then fix the line over the top of the tube with a waterproof cap.

73 de Alan 2E1ESY @GB7NND.#23.GBR.EU ------------------------------------------------------------------------------

Here on HR1BY I tried this one, it works wonderfull, a repeater, i could not acces before, I now do it with even less power.
73 - WOLF, HR1BY @ HR1PAQ


Why Don't U send an interesting bul?

--- Mystic BBS v1.12 A43 (Linux/32)
* Origin: HAMRADIO telnet slacko.kozow.com (21:5/101)