Without a sweep generator, you really can't peak the band pass.
Actually what I do is peak for max signal and then check swr and power
in and out of the cavity so see what it looks like and how much loss
there is. Band reject and notches are quite easy with an ht. Output is
not available at the output to the computer. As I said in a previous
note, output is a set of concentric knobs, larger knob clicks through
various ranges and the smaller innter knob if variable, for example on
second range, from about .15 to l.7 as i recall, forget what is in db.
I think each range is ten db in microvolts and ranges overlap.
73
Butch
WA0VJR
Node 3148
Wallace, ks.
On Tue, 1
Jul 2014, Colin McDonald wrote:
> yeah that all makes sense.
> I would have thought an HT's receive selectivity would be far to wide to
> properly tune a band pass can properly?
> You could get it in the right ball park no doubt, but it would be difficult
> to find the center peak with a typical HT on FM.
> Will the hampod speak signal generator output level in micro volts? IE, if
> you want to check the sensativity of a receiver, you adjust the signal
> generator down until you can no longer hear the 1K tone, then bring it up a
> hair until you just hear the tone through the open squelch...IE 0.18uV etc?
> Or if you are aligning/peaking the receiver in a repeater, can you quiery
> the hampod to tell you what the signal generator out put is in UV so you can
> have a general starting point to see how much it needs to be peaked?
>
> 73
> Colin, V A6BKX
> --------------------------------------------------
> From: "Butch Bussen" <[log in to unmask]>
> Sent: Tuesday, July 01, 2014 5:31 PM
> To: <[log in to unmask]>
> Subject: Re: The mystery transceiver is identified!
>
>> Actually, the scop has a bunch of switches which don't do us much good.
>> There are 4 main rotary switches, generate, receive dup, and dup-gen.
>> Mode switch, fm, am ssb and so forth, and a range-mode switch for each
>> meter. Hope that makes sense. Tone levels are set by pots, but deviation
>> can be read on the meter with speech. H T H.
>> 73
>> Butch
>> WA0VJR
>> Node 3148
>> Wallace, ks.
>
>
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