Nathaniel Steele wrote: ↑Fri Feb 19, 2021 4:02 pm They've already approved the experimental license for some testing haven't they?

Sometimes they give the petitioner enough rope to hang themselves.

Try to avoid going down more than 12". A local station thought it would be a good idea to fill and level their four tower directional antenna site to make it easier to maintain. Some of the existing radials ended up being three feet down. It seriously hosed the efficiency of the antenna. Don't ...

Depends on the tower. If it is in the "danger zone" of 135°-170° it'll have a very high base impedance and will be very fussy about things near it so make sure you do it right. A 100x100 foot ground screen around the base will help stabilize it. Many towers have their ground radials embedd...

DCC (also called modulation-dependent carrier level, MDCL) varies the (what would be the unmodulated) carrier level depending on the instantaneous modulation level in order to save energy. It happens slow enough for the receiver AGC to track. Most of them used here in the US on MW stations reduce th...

Research "RDS" or "RDBS" for FM stations. The same systems which are employed for that should work for just about any other similar need. The automation system provides the data, which rides along with the digital audio link to the remote site on a low-bandwidth link.

This is a licensing (as in royalty) play by IP pirates who somehow managed to trademark the term "single frequency network" as it applies to broadcast and also filed for a patent on "geo targeting" as it applies to broadcast. Neither are enforceable and they're trying to milk the...

The FCC will not allow a permanently constructed new antenna to be used for an STA if a site change is involved. You say the station lost its site...which means this policy kicks in. What "permanently" means is open to interpretation. Depending on the frequency you might be able to get awa...

Since you mentioned "guaranteed reliable wireless Internet" I am assuming that this is not a point-to-point path situation. One solution might be MaxxKonnect Wireless. I have not used them myself but this is run by a broadcast engineering company and is essentially prioritized LTE running ...

Think about getting the Andrews connectors... Andrew has been out of business for a few years, and I see no source of supply for the connectors. I have the current-production connectors, and just need to install them. Thanks! You won't find any NOS EIA 1-5/8" Andrew connectors either. I had a ...

I built a calibration rig with induction loops to calibrate these and the FIM21/41 meters, calibrated with a FIM-41 PI had just charged me $1560 to "repair" so it had a paper trail to NIST. It worked very nicely and I was going to offer secondary calibration services (basically checking th...

The VS300 does seem to be overly sensitive (in my opinion) to the slightest reflected power. One station had a 3-cavity bandpass filter on its output and that forced the VS300 to cut back power drastically. That is the fault of the bandpass filter. I installed a four translator combined site in Feb...

Another vote for the VS300. Pretty much an all in one transmitter package (audio, remote control, email alarms, etc.) and they are tough little things. Not quite as tolerant of criminal neglect as the old Crowns, which have been documented still running as the building burned down around it or with ...

alleo wrote: ↑Wed Sep 02, 2020 1:59 pmMark Person would have a repair manual for it.

FYI, Mark retired and shut down his business.

My experience with that transmitter having output network issues is almost always a load or lightning problem. Normally the VSWR circuit will shut the PWM drive off instantly if the load goes sideways but if that is no longer working correctly it'll keep pumping away until you blow the FETs in a pow...

I hope that this isn't a translator tied to WCHK that is running without the AM on.