I-Pro Home HF Antenna
SKU Part Number: I-Pro-Home
Exclusive to Martin Lynch and Son's An effective yet simple vertical dipole requiring no radials or grounding, ​The I-Pro Home is a centre...
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Exclusive to Martin Lynch and Son's

An effective yet simple vertical dipole requiring no radials or grounding,

​The I-Pro Home is a centre fed vertical dipole covering the HF bands between 40m & 6m. The high performance design uses efficient capacity end loading techniques to provide a low noise solution optimising performance, size and flexibility.

The band coverage includes 40m, 30m, 20m, 17m, 15m, 12m, 11m, 10m & 6m. Note 40m efficiency is down relative to the other bands.

The I-Pro Home is a non-resonant design which presents a broadband match. Most modern transceivers have built-in ATUs that will provide a match for some bands but an external ATU will be required to access all the bands.

Available in two variants, 400w and 1000w 

The Dual Beam Pro and I-Pro Home have been thoroughly tested using LDG ATUs and 25m feeder. The feeder length is a compromise between efficiency and ease of tuning. A longer cable will result in higher losses but it will reduce the SWR seen by the ATU and make the antenna easier to tune.

 

Please Note

The efficiency of the antenna is reduced for the 40m and 30m bands due to the higher cable losses.

The antennas are not designed for 80m but reception may be possible at a reduced level.

The SWR may be affected slightly by the height and local environment

The SWR measurement will be affected strongly by the cable length/attenuation

The LDG Z11 Pro is ideal for operation up to 100W. To assess the suitability of other ATUs, a tuning range of 6 - 1000 Ohms is recommended for operation across the full range of bands.

As discussed above, the demand on the ATU can be reduced by increasing the feeder length, at the cost of greater power loss in the cable.

 

The I-Pro Home is constructed from aluminium alloy tubes with an insulating GRP rod in the centre. A 4:1 voltage transformer provides a balanced to unbalanced interface to the feeder and transforms the impedance to give a broad match across the HF bands.

Physical

Height 5.0m (16ft)

Width 2.5m (8ft)

Turning radius 2.8m (9ft)

Weight 4.5kg (10lbs)

Peak Envelope Power (PEP)

Version 400 1000

Max 20 - 6m bands 400W 1000W

Max 40 - 30m bands 240W 600W

Radiation pattern

The I-Pro Home is omnidirectional with a launch angle of around 20 degrees

Requirements

The I-Pro Home requires an external ATU for operation across the full range of bands. 

The I-Pro Home requires a ground post (not included) with a diameter of 32 - 50mm (1.25 - 2 inch) and a height above ground of 1m.

There is no maximum height for the I-Pro Home but the practicalities of lifting the antenna onto the ground post and guying it become more difficult if it is higher.There is little performance advantage in raising the height - it is more important to keep the installation a reasonable distance from buildings and other obstructions.

I-Pro Home 400 / 1000 Assembly Instructions

Contents

The packing tube should contain:

2 x 1 inch diameter alloy 2.5m main element sections, 1 complete with end cap and capacity hat securing bolt

2 x 3/8 inch diameter alloy 2.5m capacity hat elements

1 x GRP rod centre joining insulator

1 x GRP rod base support insulator, complete with jubilee clip retainer

1 x 1 inch diameter 300mm centre support arm, complete with end caps

3 x cable ties, 1 reusable stainless steel

The small box should contain:

1 x matching transformer with mounting block

2 x matching transformer connection leads

1 x galvanised base support clamp

2 x cross clamps for the centre support and lower element

4 x 35mm M6 bolts with serrated nuts

4 x capacity hat element end caps

1 x self-amalgamating tape for sealing the cable connector

1 x guying ring

Tools required

10mm and 13mm spanners

 

Please Note

The efficiency of the antenna is reduced for the 40m and 30m bands due to the higher cable losses.

The antennas are not designed for 80m but reception may be possible at a reduced level.

The SWR may be affected slightly by the height and local environment

The SWR measurement will be affected strongly by the cable length/attenuation

The LDG Z11 Pro is ideal for operation up to 100W. To assess the suitability of other ATUs, a tuning range of 6 - 1000 Ohms is recommended for operation across the full range of bands.

As discussed above, the demand on the ATU can be reduced by increasing the feeder length, at the cost of greater power loss in the cable.

 
Safety

GRP/aluminium splinters can cause skin irritation and protective gloves must be worn before handling.

Ensure you have a safe working area of at least 5m x 3m.

Abide by the Work at Height Regulations for installation.

DOWNLOAD THE ASSEMBLY INSTRUCTIONS HERE

Shipping:

We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.

Returns:

If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:

Click here for returns form

Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.

Warranty Terms and Conditions

Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.

For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.

International Warranty information

Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]