Great job Simon. You got a decent improvement on sensitivity and it was good to see you go through it using the FET meter. Looking forward to seeing you on air with it. Cheers Graham
Thank you Simon for an interesting series of videos. A good high impedance analog meter is (still) a handy item to have on the bench. Mine is an HP 427A volt-ohm meter with the AC mains option. Regards, David
I have an HP 427 battery only that I made a battery for with 18650’s. Works great, fits pretty well in the space available, and will likely need a charge in the next millennium.
Who says Micronta meters are bad? That's so mean :) Nice explanation of the tune up Simon, not particularly interested in CBs but still, it's electronics, a radio and it needed fixing and you fired up the test gear. All enjoyable things to see you do at the end of the day.
If you want a nice analog meter with high impedance, check out the Philips PM2505. It even has a polarity indicator, so you don't have to switch around.
@9:00 you have to use the lowest RF signal possible, the reason being that the AGC can kick in and cause an increase in actual level to result in a reduction in perceived level, the AGC can begin to turn on at surprisingly low levels.
Smashing tune up simon :-D Did you have any problems with the red tx vco lock capacitor, or was it fine and dandy? The t.x meter will show slighty different with an antenna connected in comparison to a dummy load, it's just a simple diode/capacitor r.f sample and an antenna has some reactance. i used to set the t.x meter to a real antenna, but that's me lol. The cybernet 134 board is quite sensitive on receive. I would set the discriminator by ear for the best clearest/nicest sounding receive, they were often set miles away from normal and my customers always said how much better the receve sounded. It's a shame that there are is so much electrical noise about these days, often on 27 mhz :-( I was always supprised how well they worked with minimal parts, yes a bit basic but quite reliable ;-D
Interesting to watch you align with a sinad meter one thing I ought to have one day. Just got a Racal deviation meter on the radio side. I wonder if there's software to do sinad with a audio card. Thanks.
Are the CB frequencies different where you live as compared to the USA? The frequency range in the United States are channel 1 is 26.965 and channel 40 is 27.405. I am just curious.
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Great watching you use all that test equipment, Simon.
Great job Simon. You got a decent improvement on sensitivity and it was good to see you go through it using the FET meter. Looking forward to seeing you on air with it. Cheers Graham
Meter came highly recommended from Allthegearnoidea :-/
Very interesting. Nice to see one set up properly!!!
Nice work, Simon. Cheers, Steve
Thank you Simon for an interesting series of videos. A good high impedance analog meter is (still) a handy item to have on the bench. Mine is an HP 427A volt-ohm meter with the AC mains option. Regards, David
Totally agree. I have that HP meter on the shelf,it was just easiest to grab a battery one.
I have an HP 427 battery only that I made a battery for with 18650’s. Works great, fits pretty well in the space available, and will likely need a charge in the next millennium.
Who says Micronta meters are bad? That's so mean :) Nice explanation of the tune up Simon, not particularly interested in CBs but still, it's electronics, a radio and it needed fixing and you fired up the test gear. All enjoyable things to see you do at the end of the day.
good work, had one of these new around 1982, suppose the next progression would be a ssb box
Nothing wrong with those little micronta's :) easy to visualise peaking without affecting things etc. The Rotel is being quite pampered.
Agree. This meter is becoming more popular in the workshop. Works great for alignment.
Another great video mate let me know wheen your on air I will give u a shout if I'm about
Cheers Michael. Will do.
Always a master class watching you work. Thanks Simon. Regards Chris Ps can all your subscribers club together buy you a decent meter ?
Haha. I bought that meter because I saw you had one. Must be good If ATGNI uses one.
If you want a nice analog meter with high impedance, check out the Philips PM2505. It even has a polarity indicator, so you don't have to switch around.
@9:00 you have to use the lowest RF signal possible, the reason being that the AGC can kick in and cause an increase in actual level to result in a reduction in perceived level, the AGC can begin to turn on at surprisingly low levels.
Cheers Scott. I will go back and check.
I did , see @9:20
Smashing tune up simon :-D
Did you have any problems with the red tx vco lock capacitor, or was it fine and dandy?
The t.x meter will show slighty different with an antenna connected in comparison to a dummy load, it's just a simple diode/capacitor r.f sample and an antenna has some reactance.
i used to set the t.x meter to a real antenna, but that's me lol.
The cybernet 134 board is quite sensitive on receive.
I would set the discriminator by ear for the best clearest/nicest sounding receive, they were often set miles away from normal and my customers always said how much better the receve sounded.
It's a shame that there are is so much electrical noise about these days, often on 27 mhz :-(
I was always supprised how well they worked with minimal parts, yes a bit basic but quite reliable ;-D
I know f all bout them too but I still enjoyed Yr vid ty
Interesting to watch you align with a sinad meter one thing I ought to have one day. Just got a Racal deviation meter on the radio side. I wonder if there's software to do sinad with a audio card. Thanks.
Not sure Daren. Must be possible though.
Are the CB frequencies different where you live as compared to the USA? The frequency range in the United States are channel 1 is 26.965 and channel 40 is 27.405. I am just curious.
Yes they are. And this set is an FM set not AM.