There are circuits for all the standard attenuator types in the usual Handbook etc or Google may again prove to be your friend. It doesn't sound as if a buffer is required (just a DC block) but I've left the above comments in for interest.Īs AG3Y said, the level will be too high for the 735 attenuation of the order of 50dB or so would be suitable. Note since writing the above I have noticed that a later post refers to the availability of a 'buffered' IF output. Here's the first one that popped-up from a Google of 'FET buffer amplifier'
There are circuits in SSD and EMRFD and, probably, in the ARRL Handbook for FET buffers at 10 MHz there are no great demands on this item. Note that not using a buffer is unlikely to release the magic smoke from the radio, it might only change passband width or the design power level not fatal. You could check this with a multimeter/RF probe if you can't do this, we will take 0dBm as a guesstimate.Ī buffer may not be necessary but could be required to ensure that critical impedances (eg filter terminations) are not affected. The level may well be much lower or much higher. IF levels are likely to be somewhere in the milliwatt/0dBm region (although this depends on the radio and on where in the IF chain the 'tap' is taken). It should be quite 'do-able' and you will know much more about RF electronics at the end of the job. I think this is a most ingenious idea in the 'old-fashioned' amateur tradition. Well, this sounds interesting! I will be watching this thread carefully! I'm really curious as to what signals you want to pick up with this setup. If all the AM components were shaved off, if you could hear stations at all they might be highly distorted, unless, of course, the radio is specifically designed to receive AM. Is the same IF stage used for both AM and FM ? I think you understand what I am thinking here. Obviously, an FM IF stage is set for maximum gain and might even have a limiter stage or two in order to eliminate the AM components when in FM mode. I am also interested in what differences there are in the IF stages of the PCR-100 when it is set to receive FM, and then set to receive AM or SSB signals. Do you have a URL that we can look at? I'm pretty sure that you will have to buffer and knock down the 10.7 signal as the receiver can hear signals down to around a microvolt or less, and the signal for the 10.7 IF is going to be well in excess of that! Concluded that the icom-p7 is not overcome. With my lips touching the ic-e7 for making a normal.
IC PCR100 CABLES MANUAL
INSTRUCTION MANUAL VHF/UHF DUAL BAND FM TRANSCEIVER This device complies with Part 15 of the FCC rules.
IC PCR100 CABLES SOFTWARE
I'd be interested to know more about the modification that you have in mind. Icom Cloning Software Cs-p7 For Icom Ic-e70.
0 kommentar(er)
