I am buying a Kenwood TL-922A Amp. Anything I need to know before I hook the K3
up to it.
Thanks
Chris W7CTH
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Post: mai
> Anything I need to know before I hook the K3 up to it.
Don't do it! The TL-922 has a high voltage PTT line with *no* current
limiting and no reverse EMF diode across the relay coils. The relay
current is rather high and the "spike" when releasing PTT is quite
high. You will need to add a H
PM
Subject: Re: [Elecraft] K3 with a Kenwood TL-922A
>
>
> > Anything I need to know before I hook the K3 up to it.
>
> Don't do it! The TL-922 has a high voltage PTT line with *no* current
> limiting and no reverse EMF diode across the relay coils. The relay
> c
t; - Original Message -----
> From: "Joe Subich, W4TV"
> To:
> Sent: Friday, September 02, 2011 9:38 PM
> Subject: Re: [Elecraft] K3 with a Kenwood TL-922A
>
>
>>
>>
>>> Anything I need to know before I hook the K3 up to it.
>>
>> Don'
Please see comments below.
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Vic K2VCO
Sent: Saturday, September 03, 2011 11:51 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 with a Kenwood TL-922A
Actually, I
; -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Vic K2VCO
> Sent: Saturday, September 03, 2011 11:51 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3 with a Kenwood TL-922A
>
> Actually, I bel
gt; Sent: Saturday, September 03, 2011 11:51 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3 with a Kenwood TL-922A
>
> Actually, I believe that the K3's amp keying output could handle the +120v
> key line of the
> 922 with no trouble. My TL922 came with a diode ac
AE6QL
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV
Sent: Saturday, September 03, 2011 1:18 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 with a Kenwood TL-922A
> Vic: Do you real
> In my opinion, the TL922 MUST be modified with a faster relay, or you must
> use PTT, or you
> must use a large-ish amount of TX Delay to prevent hot-switching.
Another option to deal with sluggish amp T/R relays involves use of an
external T/R switch like the Ameritron QSK-5, or Array Solutio
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