Coax Switching

[W2VF]

Bernie!
Grounding doesn't help at much in reference to this problem.  Just remember 
how well yagis transmit RF at ground potential!
Ted W2VF
----- Original Message ----- 
From: "Bernie Arcand" <barcand at NCCRAY.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Sunday, January 07, 2007 1:26 PM
Subject: Re: [HEATH-TEMPE] Coax Switching


> 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
>>
>>
>>
>> -- 
>> No virus found in this incoming message.
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>>
>>
>
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Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

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This list is a public service of the City of Tempe, Arizona
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