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iCom Antenna Switchbox effect on Com Radio

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nuckolls.bob(at)aeroelect
Guest

Posted: Fri Jan 27, 2017 9:46 am Post subject: iCom Antenna Switchbox effect on Com Radio

At 03:32 PM 1/26/2017, you wrote:

  	  Quote: 	
		  Some time ago when the MFJ-259 was mentioned in a post, I was wishing you had made a 'comic book' about it's proper use associated with aircraft testing.  You were otherwise occupied at the time but thought it was a good idea to put on your to-do list. I would still appreciate your guidance since the included manual mentions several things NOT to do.  Knowing how to do nondestructive testing would help.  Thanks. 	


   Good idea . . .



   I'll put it in the 'bucket' of topics.



 

 

   Bob . . .

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nuckolls.bob(at)aeroelect
Guest

Posted: Fri Jan 27, 2017 10:09 am Post subject: iCom Antenna Switchbox effect on Com Radio

At 02:27 PM 1/26/2017, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: Alec Myers <alec(at)alecmyers.com>



 I bought a lovely Agilent 8664A 100Mhz-3GHz signal generator on eBay a while back for about $800 - that would do the trick. Unfortunately it weighs 50lbs and getting down the stairs from the attic and out to the airport ramp would just about kill me. 	


   Yeah, I own one of the 'cousins'

 

 [img]cid:.0[/img]



   Got it off eBay about 12 years ago . . . it's

   still working. I'm considering adding an

   external, GPS disciplined reference oscillator.

   Those are available now for under $200.



   Not that it will add much . . . last time I

   checked it against WWV it was still within

   2 ppm after a 2 hour warm up. But with the

   commercial two-way tolerances getting ever

   tighter, being able to improve accuracy

   by several orders of magnitude could

   be handy.



   I'm amazed at how good many of the jelly-bean

   transceivers out of China are. I've helped

   my fellow EMT crew acquire low cost (read

   disposable) monitor radios. Out of 7 or 8

   radios purchased so far, only one was more than

   300 Hz off frequency at 453 Mhz.



 

 

   Bob . . .

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