bal@drutx.ATT.COM (LesebergB) (08/06/87)
I recently moved and so I had to change to a different
cable TV service. I thought, "No problem, I have cable-ready
TV's and VCR." Well, they hooked me and I hit the "cable" switch
on all my equipment. As it turns out, I do have a problem. My
TV's and VCR are all 112 channel capability, but it's not
enough. The cable service offers the standard 2-13 VHF Lo and Hi
plus cable channels 14 - 53. My TV's and VCR get up to about 42
then show either snow or channel 42 on the remaining stations.
My roommate has a converter (his TV is not cable ready) and he
picks them all up. The neighbor has a 130 channel capability
set, and he receives them all fine.
I didn't want to get a converter for each piece of
equipment, I'd loose the use of my remotes and being able to
record more then one channel while I was away. So I decided to
invest in a RADIO SHACK cable block converter. Before I bought
it I knew I was in for a project, it only moves channels 2-42 to
the UHF band. Channel 42 ends up on 83 UHF, it's what I have now.
Well, I cracked it open and decided to lower the oscillator
frequency. I changed a coil and adjusted the trimmer cap. This
moved things enough so I could get the missing 10 or so channels
on stations 72-82 UHF. I really don't care about getting
everything moved onto UHF, I only want a means to receive the
missing 10 channels. My problem now is these last 10 channels
are fuzzy. Either the input has a trap for these higher channels
or I'm getting harmonic interference from the oscillator or
something. I've adjusted the oscillator around but no matter
where I put the missing 10 channels, the upper 8 of these are
fuzzy, the lower 2 are usually OK.
Has anyone attempted this before, have any ideas to
bounce around, know of a block converter that will do what I
want, or need something to do and would like for me to send a
schematic as an exercise ? No ? Can't blame you, I don't know
what to do either 8-) ! If nothing else, I'll try to live with
the fuzziness. Anyone else have this problem ?
------- ------- ------- Brad Leseberg
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------- ------- ------- ...ihnp4!drutx!bal