Dr Rick I am only saying that the 7300 has a band pass filter covering the 40m band. It is a bit wider(6500-8000kHz) than the band. If it's too wide for the conditions, a pre-selector is one solution
I can not use the MFJ on 160 without a trap on the main antenna because of strong local stations causing all manner of intermod. The solution will be two antennas for RX phasing. Two of the others ca
I am thinking about a home brew tracking preselector and started looking for other examples. Then I start to read that the Flex guys appear to be needing a preselector too! A bit of a surprise. Then
John and Rick Thanks! I retract my remarks WRT the Heros folk :-) I'll have to scratch my head/pencil. There is a temptation for multiple stages to make a 'modern' TRF set! As for the QRM. There is t
The "raider" thing is not that uncommon. An Atlanta area, family owned, wholesale grocery business was taken in. Agreement to purchase with small down payment. New "team" rounded up all receivables a
Wish mine were so simple. Check the power on reset ckt for the uP. More likely a problem with reset occurring prior to power being stable than anything else. I have seen same symptoms in many non-rad
Replacing all the caps! No Way!. Maybe testing a few. If you have dual trace scope with trigger, you can look to see if the CPU is resetting. If not, I would suspect this small circuit. Note the timi
GaryI am interested in the filter cover, speaker bracket, synth board and possibly fan. Please let me know $. If the reserve is enough on the synth board, I will take that for sure. They are to go wi
The dynamic range of the A/D converter is not the dynamic range that can be recovered. The bandwidth (sample rate) is also important. Increased sample rate for a given bandwidth increases the signal
No red seen here :-) The number of bits specification for an A/D converter usually tells us the dynamic range of conversion. It rarely tells us the signal handling capability of the converter. That's
Mom drove me over to W4WKP's(SK) house and I traded paper route and lifeguard money for used gear. A Knight T-60 and bright blue NC140. It was also my first time seeing the inside of a real mansion.
MikeDid you reply to all those white QSL? JoeYa done good! How many of y'all tried to see/saw an ECHO satellite pass? https://en.wikipedia.org/wiki/Project_Echo Any hear sputnik? I was only four but
I have an early 565. Early to make and early to break? Neither the filters nor the synth board have the topside shields. If anyone wants to have a stab at it, $500 shipped in USA lower 48. Transmit b
Isn't the harmonic problem much simpler now that the SMPS frequencies are dithered? Also, aren't the much higher SMPS frequencies in use today easier to deal with? Is there an incidental benefit that
I'm looking for a dead/problem TenTec Eagle/599 for parts. Let me know what you have and I'll shoot you an offer. Please include phone # and call. Thanks. 73, -Bob ah7i/w4
John Henry! or anyone who knows. I am looking into purchase of an amplifier(used herc2) to use with my eagle. I would like to know if the ena-3 line is active for identifying a device at the ACC conn