Antenna ZS1JHG-66ft-LW
2
ZS1JHG Multiband Longwire 66 feet (20.12m) of insulated wire about 1/1.5 mm diam. Connect 66 ft long wire to a 4.1 Balun and then use a short length o to Transceiver. The Counterpoises are connected directly to the 4.1 Balun. Do not us Tested using a 4.1 Moxon voltage Balun and an MFJ 259B SWR Analyser Freq C/poise SWR SWR R X Mhz length 50ohm 75ohm coax coax 7050 32.7ft 10m 2.3 1.7 133 0 14200 17ft 5.2m 1.1 1.4 54 0 21200 9.8ft 3m 1.2 1.3 56 0 28500 5.9ft 1.8m 1 1.5 49 3 *** Notes To obtain a lower SWR on 7.050 use RG59 (75ohm) coax to connect to On other bands RG58 ( 50ohm) must be used. *** Calculated SWR using RG59 coax on all bands from TLW program by Dean Straw QST Tech editor The counterpoises must run away from the TX operating position to mi capacitive coupling with the operator. Note these are hot with RF so suitable insulation at ends of counterpoises. The counterpoises can consist of one length of 17 ft , 9.8 ft and 5. Joining these all together with suitable couplers will give 32.7 ft 66 ft 4.1 balun coax 50 ohm (for 40m coax 75 ohm)
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HF Ham antenna for limited space and apartment dwellers. Covers 40m,20m,15m and 10m with lowSWR ie ATU not required
Transcript of Antenna ZS1JHG-66ft-LW
ZS1JHG Multiband Longwire
66 feet (20.12m) of insulated wire about 1/1.5 mm diam.
Connect 66 ft long wire to a 4.1 Balun and then use a short length of coaxto Transceiver.The Counterpoises are connected directly to the 4.1 Balun. Do not use a ground earth.
Tested using a 4.1 Moxon voltage Balun and an MFJ 259B SWR Analyser
Freq C/poise SWR SWR R XMhz length 50ohm 75ohm
coax coax
7050 32.7ft 10m 2.3 1.7 133 0
14200 17ft 5.2m 1.1 1.4 54 0
21200 9.8ft 3m 1.2 1.3 56 0
28500 5.9ft 1.8m 1 1.5 49 3***
Notes
To obtain a lower SWR on 7.050 use RG59 (75ohm) coax to connect to TXOn other bands RG58 ( 50ohm) must be used.*** Calculated SWR using RG59 coax on all bands
from TLW program by Dean Straw QST Tech editorThe counterpoises must run away from the TX operating position to minimisecapacitive coupling with the operator. Note these are hot with RF so ensuresuitable insulation at ends of counterpoises.
The counterpoises can consist of one length of 17 ft , 9.8 ft and 5.9 ft.Joining these all together with suitable couplers will give 32.7 ft
66 ftC/Poise
4.1 balun
coax 50 ohm(for 40m coax 75 ohm)
