CHELEGANCE MC-750 Portable HF GP Antenna Installation Guide

MC-750 Portable HF GP Antenna

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Specifications:

• FREQUENCY RANGE: 7MHz-50MHz
• POWER: 100 WATTS PEP
• IMPEDANCE: 50 OHMS
• COUNTERPOISE: 4 X 3.5M
• WEIGHT(KG): 1.8
• DIMENSION(CM): 65X9X7

Product Usage Instructions:

1. Installation Guide

1. Connect the 50CM antenna arm to the ground rod (antenna base
   attached).

2. Insert the ground rod into the ground, ensuring it is deeply
   inserted.

3. Insert the 4 counterpoise wires into the designated holes on
   the antenna base, spreading them at different angles.

4. If operating on 7MHz band, connect the 7MHz coil to the antenna
   arm; otherwise, skip this step.

5. Connect the 5.6M whip to the antenna arm (top of the 7MHz coil
   if operating on 7MHz).

6. Adjust the length of the whip antenna according to the
   reference marking points for desired frequencies.

2. Fine Tuning

Make fine adjustments to the length of the whip antenna until
you achieve sensible VSWR readings using an in/external VSWR meter,
VNA, or antenna analyzer.

3. Usage for Specific Bands

For 10MHz band:

• Apply the 7MHz coil
• Fully extend the last four sections + 15cm of the 5th section
  from the telescoping whip (rest sections below collapsed).

For 50MHz band:

• Fully extend the last section of the whip (rest sections below
  collapsed) without using the 7MHz coil.

4. Recommendations on Accessories

It is recommended to have an antenna analyzer or VNA to read the
parameters of the antenna setup. Additionally, having an antenna
tuner can enhance performance.

FAQ:

Q: Can I exceed the power ratings of the antenna?

A: No, do not power the antenna more than its PEP power ratings
to prevent damage.

Q: What frequencies can I operate on with MC-750?

A: MC-750 supports a frequency range of 7MHz-50MHz.

Q: How should I store and transport MC-750?

A: All components are packed in a carry bag measuring
65CMX9CMX7CM for easy portability and storage.

Q: How can I contact support for any issues?

A: Reach out to support@chelegance.com for assistance.

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JNCRADIO MC-750 PORTABLE HF GP ANTENNA
https://chelegance.com/products/jncradio-mc-750-100-watts-portable-hf- gpantenna/

1-1. DESCRIPTION & SPECIFICATION

MC-750 is a 7-50MHz, 100-WATT GP antenna designed for portable applications.
For Frequencies above 14MHz it is used as a full size1/4 wavelengthantenna. And a coil is used for 7MHz.
All the components are packed with a 65CMX9CMX7CM carry bag which makes it very easy to be carried by operators for field operation.

FREQUENCY RANGE

7MHz-50MHz

POWER

100 WATTS PEP

IMPEDANCE

50 OHMS

COUNTERPOISE

4 X 3.5M

WEIGHT(KG)

1.8

DIMENSION(CM)

65X9X7

//WARNING: Do not power the antenna more than its PEP power ratings.

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1-2. PART LIST
1 X GROUND ROD(ANT BASE ATTACHED) 1 X 7MHZ COIL 1 X 50CM ANT ARM 1 X 5.6M WHIP 4 X COUNTERPOISE WIRES(radials) 1 X WIRE COLLECTOR BOARD 1 X CARRY BAG
1-3. INSTALLATION GUIDE
Connect the 50CM antenna arm to the ground rod(antenna based attached) Insert the ground rod to the ground, the deeper the better. Insert the 4 counterpoise wires into the 4 holes to the antenna base, spread
the counterpoises to different angles
If you want to use 7MHz band, connect the 7MHz coil to the antenna arm. If not, skip this step.
Connect the 5.6M whip to the antenna arm(top of the 7MHz coil if you want to operate on 7MHz)
There are reference marking points printed on the whip antenna. Adjust the length of the whip to meet your desired frequency according to the reference marking points.(All sections above the mark needs to be fully extended and all sections fully collapsed.. 7MHz band need to have the supplied coil used as mentioned above)
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Although there are reference points, you might still need to do fine adjustments to the length of the whip antenna until you get a sensible VSWR readings(From an in/external VSWR meter, VNA or antenna analyzer).
Notice that 10MHz and 50MHz are usable with MC-750 however they do not have markings on the whip for some reason. o If you want to use 10MHz, apply the 7MHz coil, fully extend the last four section + 15cm of the 5th from the telescoping whip(the rest sections below collapsed). Check below photo as a reference.
o If you want to use 50MHz, just fully extend the last section of the whip(the rest sections below collapsed) without using the 7MHz coil.
1-4. RECOMMENDATIONS ON ACCESSORIES
It’s recommended to have antenna analyzer or VNA to be able to read the parameters of the antenna set up.
Of course it will be great if you have an antenna tuner Reach out to us if you have any problems: support@chelegance.com HAVE FUN WITH MC-750, 73!
https://chelegance.com/

References

• Chelegance – Portal to verified Ham Radio Products

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