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IC-7000 to MFJ-4416c and HSEND?

 

Hello All,?
I want to connect my 7000 to an MFJ-4416C voltage booster's keying circuit so I don't have to leave the booster ON - It generates rolling switching noise when just left on.? Anywho, my other radios have a SEND RCA plug that goes to ground to key an amp, but the 7000 has an HSEND and the manual shows it as an input and output, so I don't want to do something stupid and let the smoke out.
?
I would have thought all I needed to do would be connect the HSEND to either pin 1 or 2 on the 4416, but looking for confirmation.? I don't care to use the VSEND for anything because this is my HF mobile, and I've got a separate VHF/UHF rig.
?
Any suggestions, confirmations, or cautions welcome.
?
TU es 73,
Lynn - KW4WL
?
EXTERNAL BOOST CONNECTOR ?
DE-9 Pin?
1 GROUND TO ENABLE pulled to +13V with 3.3K pull-up resistor.?
2 GROUND TO ENABLE pulled to +13V with 3.3K pull-up resistor.?
3 HIGH TO ENABLE any voltage between 4 and 15V?
4 HIGH TO ENABLE any voltage between 4 and 15V?
5 13V DC OUTPUT resettable fuse limited to 100mA?
6 to 9 GROUND ??
 

Hi Michael

I had a 4416 in my crew cab truck hooked to my 7K with the radio body, booster box, and independent battery 100A AGM (much less noise)? in a radio box I made in my locked?canopy, and the control heads for both at the driver's seat.?
To spare the radio battery I went into the control head of MFJ 4416 and installed two small micro switches on the left side to shut off power to the control head and to the control unit in the rear. The power booster would not output power unless both the (power booster always on the red button ) was pushed and both of the micro switches were on.?
Having the two switches I could see the difference in voltage between no booster and with the booster.? ?I added a third micro switch to the right side to control the lights in the meters so they were not always on.? (saving battery I hoped).??

?It has been working for many years till the truck was retired and I plan to install the setup in my Ford Edge under the rear seat with the control heads on an? 8" drawer slide, out of sight until needed.? The only thing that will be seen is my dual-band antenna on the roof and the HF antenna mount behind the rear tire on the passenger side.

Good luck,? Hope you get your working,

73
David?
NA7DP? ?

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