Coax Switching

[Bernie Arcand]

Dave,
Am sending this to you and the rest of the HEathkit list.  Thanks to all who 
offered advice and support....especially the calculations and testing 
proceedures.
I did dig out the manual for the Heathkit HS-1234 switch and learned that 
all un-used ports are grounded, which should help.  Plan on doing further 
testing this afternoon and evening.  Thanks again, everyone, for all your 
help.

73
Bernie in ND
WD0GMD
----- Original Message ----- 
From: "Dave" <laptop at gwltd.com>
To: "Bernie Arcand" <barcand at nccray.com>
Cc: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Saturday, January 06, 2007 10:07 PM
Subject: Re: Coax Switching


>I have been switching radios in this fashion for years an have never had 
>any trouble. I have several high power transmitters not just 100 watts, and 
>they are all switched from common panel with both boat anchor and modern 
>radios and as I said never have had any damage to my radios.
>
> Dave De W9WRL.com
>
> Bernie Arcand wrote:
>
>>Hi guys...
>>I have a Heathkit Coax switch that I built decades ago, and now that I 
>>have two rigs, I have the output of both of these rigs into the switch, 
>>with the common port the output to the tuner/antenna.  Question:  Is there 
>>a possibility or potential or likelyhood that by transmitting on one 
>>radio, that I can damage the receive on the other radio when it is turned 
>>off?  Would I decrease the likelyhood of damage if I turn on the RF 
>>attenuator on the unused rig before I turn it off?  I realize the safest 
>>way is to disconnect the coax and terminate it into a 50 ohm load...but 
>>don't want to do that.  Simply want to switch between rigs.
>>
>>I don't know if I was just used to the dimished receive capability ion my 
>>Kenwood TS830S and didn't realize it until I compared it to the Kenwood 
>>TS-430S, which is super hot!
>>
>>Just wondering what your opinions are...any and all...but rest assured, 
>>I'm not trading my Kenwoods for a /\/\.
>>
>>Bernie in ND
>>WD0GMD
>>
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>>
>
> -- 
> J. Dave Mayfield
> W9WRL.com
>
>
>
> -- 
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