[Heathkit] Heathkit SB-610, a new twist

[Bwana Bob]

Dick:

I forgot if you mentioned it, but did you try RG-602/U? I beleive that 
it has  a lower capacitance.

         73,

         Bob WB2VUF

On 6/9/2012 7:53 PM, Dick KF4NS wrote:
> Yea Jim, I see what you mean but kind of weird though, years ago it worked just fine with my HW100 and I
> was using RG174 in the rig and RG58 as a connecting cable. Actually I believe the 610 was mostly intended
> to be used with the SB/HW Heathkit equipment. In the manual for the 610 I do not recall any mention about
> precautions concerning the results I am having.
>
> Oh well, I will just use the 610 for xmit monitoring and forget about receive signals. I would not have
> the jewels to make a critical comment to anyone based on the display of the 610.
>
> 73, Dick KF4NS
>
>
>
>
> ----- Original Message -----
> From:<heathkit-request at mailman.qth.net>
> To:<heathkit at mailman.qth.net>
> Sent: Saturday, June 09, 2012 12:03 PM
> Subject: Heathkit Digest, Vol 101, Issue 9
>
>
> <<SNIP>>|
> | When replying, please edit your Subject line so it is more specific
> | than "Re: Contents of Heathkit digest..."
> |
> |
> | Today's Topics:
> |
> |   1. Re: Heathkit SB-610, a new twist (Jim Shorney)
> |
> |
> | ----------------------------------------------------------------------
> |
> | Message: 1
> | Date: Fri, 08 Jun 2012 20:54:15 -0500
> | From: "Jim Shorney"<jshorney at inebraska.com>
> | Subject: Re: [Heathkit] Heathkit SB-610, a new twist
> | To: "heathkit at mailman.qth.net" heathkit at mailman.qth.net Message-ID:
> <20120609015424.285CC31BB3F at mail01.inebraska.com>
> | Content-Type: text/plain; charset="iso-8859-1"
> |
> | On Fri, 08 Jun 2012 11:25:49 -0400, Dick KF4NS wrote:
> |
> |>Well, both are finally in real fine shape, better than new, UNTIL THIS NEW TWIST JUST DISCOVERED.
> |>
> |>It seems that the HW100 tap for the 610 must be terminated by 50ohms and a tuned circuit at the IF
> freq
> |>of 3395khz. HMMMM, this is definitely a NEW TWIST. If my luck was not bad I would not have any at all.
> |
> |
> | Not surprising. Nothing happens in a vacuum; when you add another circuit
> | element (the 610 and cable) to the IF, you change the parameters of the
> | circuit. You need to either leave the scope connected at all times, or buils a
> | small solid-state buffer amp into the radio to isolate the IF from the added
> | circuit element.
> |
> | 73
> |
> | -Jim
> |
> | --
> | ?There?s something out of place ? let?s go and poke it with a stick.? ? The Doctor (Amy?s Choice
> episode)
> |
> <<SNIP>>
>
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