Sweep Generator? - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Various and Sundry Categories (https://philcoradio.com/phorum/forumdisplay.php?fid=37)
+--- Forum: Test Equipment (https://philcoradio.com/phorum/forumdisplay.php?fid=31)
+--- Thread: Sweep Generator? (/showthread.php?tid=6678)

---

Sweep Generator? - Eric Adams - 05-16-2013

OK, more questions.
To align FM radios do I have to have a sweep generator? Can it be done with an RF generator?

If I need one, is this what I want? :http://www.ebay.com/itm/BK-Precision-3020-Sweep-Function-Generator-Dynascan-Corporation-mint-/151043339441?pt=LH_DefaultDomain_0&hash=item232ae274b1

Thanks

---

RE: Sweep Generator? - Mondial - 05-16-2013

It depends on the receiver. Some manufacturers specify a sweep alignment with a sweep generator and scope, others just use a simple peaking procedure and zero setting the discriminator output with an on frequency IF signal from a usual RF generator.

A lot depends if the IF transformers are overcoupled for wide bandwidth. Although I have a couple of sweep generators, I have usually been able to do a pretty fair job without using them for FM receiver alignment.

The generator on ebay won't work for aligning a broadcast FM receiver. It is a low frequency sweep/function generator and only goes up to 2 MHz. You need a 10.7 MHz sweep signal.

---

RE: Sweep Generator? - Eric Adams - 05-16-2013

Thanks. I'm glad I asked.

---