[TenTec] New Jupiter on its Way _ A Few Questions

K8JHR jrichards at k8jhr.com
Sun Apr 27 20:29:25 EDT 2014


	

On 4/27/2014 5:05 PM, ny6p01 at gmail.com wrote:
   Only
> problem is that I plan on employing it on the same mast with the
> transmitting antenna. Is that bad practice? The reason is that I am not
> allowed an outdoor antenna, and I live in a small flat.



	ER... um... maybe.   Even Wellbrook says one should
	locate it away from strong transmit antennas to
	avoid overloading the receiver input.

	I think the correct answer is that it all depends
	on how well you isolate the receiver input from
	the transmit antenna and whether or not you use
	a separate receiver from the transmit radio, and
	similar considerations.  SO2R installations have
	similar issues - sometimes guys use a "front end
	protector" as is reviewed in QST this month, and
	other guys use a "time sequencer" to kill the \
	antenna when transmitting, tied to the PTT line
	and still others use a separate receive-only
	antenna input on the rig, as is available on the
	Omni VII, but not the Eagle.

	Yep... This COULD be a serious concern if not
	fully thought out.
	

	BUT YOU COULD TRY IT AND SEE HOW YOU LIKE IT
	AS A RECEIVE ONLY ANTENNA AND DEAL WITH THE
	TRANSMIT LOGISTICS LATER...




> Then, I'll think about the antenna. I've already started to look for a frame
> for the loop - I'm thinking 3/4" pvc; and flexible copper tubing for the
> main loop.


		I know SWLs often use hula hoops ...


____________________ K8JHR ____________________________


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