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#1
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Looking for decent HF signal generator
Our undergrad teaching labs have a couple of really crappy cheapo
RF signal generators that will do LF and HF on fundimental and near VHF on 3rd harmonic. The waveform is so unstable that you're lucky to be able to read 2nd signifcant fugure of frequency on a good counter and the voltage output across a purely resistive load varies more than 10dbv. They are just about useless. Does anyone know of a model that could be got, new or used, for not much more than a kilodollar that would be stable and readable to at least three signifcant figs. (interpolate to 4 ) and is well enough buffered to maintain a constant output level. tnx 73 kc2lvq |
#2
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If you don't mind older tube equipment, consider
an HP 606 for HF, and HP 608 for VHF. They are excellent, stable, and well calibrated signal generators that can be had really cheap. Steve p.s.-for better frequency accuracy, use an external counter William Mutch wrote in message ell.edu... Our undergrad teaching labs have a couple of really crappy cheapo RF signal generators that will do LF and HF on fundimental and near VHF on 3rd harmonic. The waveform is so unstable that you're lucky to be able to read 2nd signifcant fugure of frequency on a good counter and the voltage output across a purely resistive load varies more than 10dbv. They are just about useless. Does anyone know of a model that could be got, new or used, for not much more than a kilodollar that would be stable and readable to at least three signifcant figs. (interpolate to 4 ) and is well enough buffered to maintain a constant output level. tnx 73 kc2lvq |
#3
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If you don't mind older tube equipment, consider
an HP 606 for HF, and HP 608 for VHF. They are excellent, stable, and well calibrated signal generators that can be had really cheap. Steve p.s.-for better frequency accuracy, use an external counter William Mutch wrote in message ell.edu... Our undergrad teaching labs have a couple of really crappy cheapo RF signal generators that will do LF and HF on fundimental and near VHF on 3rd harmonic. The waveform is so unstable that you're lucky to be able to read 2nd signifcant fugure of frequency on a good counter and the voltage output across a purely resistive load varies more than 10dbv. They are just about useless. Does anyone know of a model that could be got, new or used, for not much more than a kilodollar that would be stable and readable to at least three signifcant figs. (interpolate to 4 ) and is well enough buffered to maintain a constant output level. tnx 73 kc2lvq |
#4
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Watch Ebay for HP 8656A or B Sig Generators. Synthesized to 990 Mhz. Stable
and programmable. Have been going for around $500. Can use an external reference for more accuracy. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (Local) "William Mutch" wrote in message ell.edu... Our undergrad teaching labs have a couple of really crappy cheapo RF signal generators that will do LF and HF on fundimental and near VHF on 3rd harmonic. The waveform is so unstable that you're lucky to be able to read 2nd signifcant fugure of frequency on a good counter and the voltage output across a purely resistive load varies more than 10dbv. They are just about useless. Does anyone know of a model that could be got, new or used, for not much more than a kilodollar that would be stable and readable to at least three signifcant figs. (interpolate to 4 ) and is well enough buffered to maintain a constant output level. tnx 73 kc2lvq |
#5
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Watch Ebay for HP 8656A or B Sig Generators. Synthesized to 990 Mhz. Stable
and programmable. Have been going for around $500. Can use an external reference for more accuracy. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (Local) "William Mutch" wrote in message ell.edu... Our undergrad teaching labs have a couple of really crappy cheapo RF signal generators that will do LF and HF on fundimental and near VHF on 3rd harmonic. The waveform is so unstable that you're lucky to be able to read 2nd signifcant fugure of frequency on a good counter and the voltage output across a purely resistive load varies more than 10dbv. They are just about useless. Does anyone know of a model that could be got, new or used, for not much more than a kilodollar that would be stable and readable to at least three signifcant figs. (interpolate to 4 ) and is well enough buffered to maintain a constant output level. tnx 73 kc2lvq |
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